Abstract

Disclosed in the present invention are a monitoring system and method for the global temperature and humidity of a main cable of a suspension bridge. The monitoring system for the global temperature and humidity of a main cable of a suspension bridge comprises a demodulation module, a data processing module and a plurality of measurement cable strands. It is only necessary to provide a small number of measurement cable strands in an original main cable to implement global state monitoring of the main cable. Mass temperature and humidity data acquired by means of the monitoring system can provide real data support for state assessment of the main cable. Temperature grating array sensing optical fibers and humidity grating array sensing optical fibers, which are arranged in the measurement cable strands, are small in terms of size and have high measurement precision, are resistant to electromagnetic interference, do not require a power supply, can be directly installed in place as the cable strands are being pulled, and have a good economical performance.

IPC Classes  ?

• G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass
• G01K 11/3206 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
• G01N 21/55 - Specular reflectivity

Abstract

Provided is a concrete full lifecycle green quality control method based on Internet of Things and big data, comprising the following steps: step 1, on the basis of an information platform, selecting raw materials required by concrete, so as to achieve the control of the selection of the raw materials of concrete; step 2, on the basis of the information platform, performing engineering concrete mix ratio intelligent design, and obtaining the mix ratio of the raw materials required by concrete corresponding to a project under construction; step 3, on the basis of the information platform, taking into account the obtained concrete mix ratio to mix and prepare concrete by means of an intelligent concrete factory, and automatically testing and controlling the quality of the prepared concrete at the same time; and step 4, on the basis of the information platform, using the mixed and prepared concrete to perform intelligent construction. Automatic, intelligent and green control of concrete throughout the full lifecycle from raw materials, mix ratio design, production, and construction to the service life of the structure are achieved by controlling each stage of the full lifecycle of the concrete.

IPC Classes  ?

• G06Q 10/0639 - Performance analysis of employeesPerformance analysis of enterprise or organisation operations

Abstract

Disclosed are a green intelligent pile-driving vessel operation management system and a construction method. The green intelligent pile-driving vessel operation management system comprises an energy management system and an operation management system. The energy management system is used for, on the basis of a current working condition of a pile-driving vessel, managing energy distribution of the pile-driving vessel, and the operation management system is used for managing operation distribution of the pile-driving vessel. In the present invention, on the basis of power load conditions of each process, an energy storage unit is introduced, power fluctuations of a power grid are stabilized, and the number of starting stations of a main generator set is reduced, so that the main generator set operates within an economical energy consumption range, achieving intelligent and efficient energy efficiency management of the pile-driving vessel. The influences of on-site wind, wave, and flow environment conditions and hull motion on piling precision are evaluated by means of an operation auxiliary decision-making system of the pile-driving vessel. During the pile-driving process, the hammering energy of a hydraulic pile-driving hammer and the number of hammer strikes are read, and a laser ranging radar is used for measurement to obtain the degree of penetration of each hammer, automatically generating a piling data table. Moreover, the hammering energy is adjusted by means of evaluating the total penetration depth of continuous multiple hammer strikes, thereby achieving automatic pile-driving operations and reducing the labor intensity of operators.

IPC Classes  ?

• G06Q 10/0631 - Resource planning, allocation, distributing or scheduling for enterprises or organisations
• G06Q 10/10 - Office automationTime management

Abstract

Provided in the present invention are an assembly-type pile-top connecting structure and a construction method. The assembly-type pile-top connecting structure comprises pile foundations, wherein a plurality of shear keys are welded to the outer side of the top of each pile foundation, pile-top connecting devices are provided on the pile foundations, the pile-top connecting devices on the plurality of adjacent pile foundations are fixedly connected, and precast beams for assembly are placed on the pile-top connecting devices; a steel sleeve is fixedly arranged at the bottom of a steel plate in each pile-top connecting device, a wedge-shaped support is fixedly arranged in the steel sleeve, the steel sleeve is located on the outer side of the top of a pile foundation, and the wedge-shaped support is supported on the inner side of the top of the pile foundation; and a water-stop rubber ring is provided between the inner side of the bottom of the steel sleeve and the pile foundation, and a grouting material fills the space between the steel sleeve and the pile foundation. Conventional pile caps are eliminated, and the pile foundations are directly connected to transverse and longitudinal precast beams and joints by means of the pile-top connecting devices, such that the green and industrialized construction of marine engineering structures is realized.

IPC Classes  ?

• E02D 27/14 - Pile framings
• E02D 5/22 - Piles
• E02D 27/52 - Submerged foundations
• E02B 17/00 - Artificial islands mounted on piles or like supports, e.g. platforms on raisable legsConstruction methods therefor

Abstract

Provided is a mounting method of a main beam of a double-sided steel box UHPC composite beam cable-stayed bridge and a composite beam thereof. The method includes the following steps: carrying out prestressed tensioning in a transverse direction of the bridge for all beam segments; pouring UHPC when a wet joint between a second beam segment and a third beam segment located in front of an end beam segment is in a pre-bending state; initially matching and positioning the end beam segment and a beam segment to be mounted; tensioning a n-th stay cable corresponding to the end beam segment for the first time; tensioning the n-th stay cable for the second time to a designed cable force.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

Provided in the present invention are an integrated intelligent construction method for a cast-in-place box girder, and a system. The method comprises the following steps: S1, designing a scheme on the basis of BIM; S2, forming and transporting a rebar part; S3, establishing a box girder formwork; S4, testing the precision of the formwork; S5, assembling the rebar part in the formwork; S6, testing the quality of the rebar part; S7, constructing a prestressed pipeline and performing alignment inspection; S7, casting concrete; S8, testing the quality of the concrete; S9, curing the concrete; S10, controlling the quality of curing; and S12, performing prestressed tensioning and grouting inspection. Intelligent integrated box girder construction is realized by means of the above steps. In the present invention, the above solution is used, and intelligent control technology is introduced into a construction method, so that the mechanization, automation and intelligence levels of cast-in-place box girder construction can be improved, thereby greatly improving the construction efficiency, reducing labor intensity, improving on-site management levels, and ensuring construction safety and construction quality.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

Disclosed in the present invention are an automatic positioning and sinking system for an open caisson and a construction method therefor. Anchor pier platforms are provided upstream and downstream of a design position in which an open caisson is to sink, an automatic mooring device is arranged on each anchor pier platform, one end of each anchor cable is connected to a corresponding automatic mooring device, the other end of each anchor cable is connected to the open caisson, and the anchor pier platforms serve as counter-force support points. Corresponding anchor cables are automatically tensioned or loosened by means of a plurality of automatic mooring devices, and matched adjustment of a plane position or a torsion angle of an open caisson is made, such that the operation convenience of the anchor cables is improved, the problem of stress safety during a movement process of the open caisson in water is well solved, each operating procedure during a positioning and sinking process for the open caisson is relatively simple and easy to switch, and a construction period of a key line during a bridge construction process is shortened. The working efficiency of an open caisson landing is improved, and synchronous operations of corresponding automatic mooring devices can be utilized for different anchor cables at the same time, such that the labor and time cost for cable replacement are reduced, the sinking construction efficiency of the open caisson is improved, and the adjustment accuracy of the anchor cables is better guaranteed.

IPC Classes  ?

• E02D 23/08 - Lowering or sinking caissons

Abstract

Disclosed in the present invention are an integrated intelligent tower building apparatus for industrial construction of a bridge tower and a method. The integrated intelligent tower building apparatus comprises: a frame body, an automatic climbing mechanism, a template system, a vibrating system, a material spreading system, an opening/closing mechanism, a maintenance system, and an automatic template cleaning robot. The opening/closing mechanism comprises a tripod, an opening/closing oil cylinder, a pulling plate, and an opening/closing beam. The tripod is welded under a runway beam of an outer mold support. One end of the opening/closing oil cylinder is hinged to and fixed to a vertical rod of the tripod, and the other end of the opening/closing oil cylinder is hinged to the opening/closing beam. The opening/closing beam is hinged to a back arris of an outer template, and the other end of the opening/closing beam is hinged to the lower end of the vertical rod of the tripod. One end of the pulling plate is hinged to the side surface of the runway beam, and the other end of the pulling plate is hinged to a platform beam on the back of the template. The present invention achieves the improvement of the automation and intelligence level of the apparatus in each process of main tower construction.

IPC Classes  ?

• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges
• E01D 19/14 - TowersAnchorsSaddle supports
• G06Q 10/047 - Optimisation of routes or paths, e.g. travelling salesman problem
• G06Q 50/08 - Construction

Abstract

Provided in the present invention is a construction method for constructing a gateway in a limited space underneath a bridge. The construction method comprises the following steps: S1, setting up an appropriate construction location; S2, marking an extension path, construction starting point and construction end point of a gateway; S3, constructing first cast-in-place piles; S4, connecting and fixing the first cast-in-place piles on two sides by means of positioning frames; S5, excavating a first excavation pit and a second excavation pit, and providing second excavation pits on two sides of the gateway in the extension direction; S6, simultaneously constructing a third excavation pit, wherein the first excavation pit, the second excavation pit and the third excavation pit are arranged in a stepped shape; S7, continuing to excavate; S8, repeating S3-S6 until a second foundation pit body is formed; S9, completing the construction of third cast-in-place piles; S10, forming a first communicating foundation pit; S11, repeating S3-S10 until a second communicating foundation pit and continuous cast-in-place piles in rows are completed; and S12, erecting formwork and performing pouring and filling, and thereby forming a designed target pit. The present invention makes construction efficient, can greatly improve the overall construction efficiency, and can also ensure the operation safety.

IPC Classes  ?

• E02C 1/00 - LocksShaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass
• E02D 5/34 - Concrete or concrete-like piles cast in position
• E02D 17/02 - Foundation pits

Abstract

Provided in the present invention is a synchronous rapid construction method for concurrent construction of a navigation lock and a water gate in a curved channel. The synchronous rapid construction method comprises the following steps: S1, at the end of the wet season, excavating an open diversion ditch, synchronously excavating a foundation pit for a navigation lock which is not on a natural channel, and constructing the navigation lock; S2, constructing a steel trestle bridge for transportation; S3, in the early stage of the dry season, closing the natural channel by using an earth-rockfill cofferdam upstream of the water gate and an earth-rockfill cofferdam downstream of the water gate, and using the open diversion ditch for the travelling of water; S4, rapidly constructing the water gate on the closed natural channel, wherein the water gate is built close to two side portions of the natural channel; S5, before the next year's flood season, breaching the earth-rockfill cofferdam upstream of the water gate and the earth-rockfill cofferdam downstream of the water gate in the natural channel, and using the natural channel for passing through the flood season; and S6, after the flood season, restoring the earth-rockfill cofferdam upstream of the water gate on the natural channel, reusing the open diversion ditch for the travelling of water, and continuing to construct the water gate at the same time. The method of the present invention is ingenious and can reduce, from multiple aspects, the influence on construction caused by a water flow experiencing a sudden weather change and the flood season, thereby improving the overall construction efficiency.

IPC Classes  ?

• E02B 1/00 - Equipment or apparatus for, or methods of, general hydraulic engineering
• E02B 3/00 - Engineering work in connection with control or use of streams, rivers, coasts, or other marine sitesSealings or joints for engineering work in general
• E02C 1/00 - LocksShaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass

Abstract

An efficient lifting device capable of adapting to the mounting angle of a concrete armor block. The efficient lifting device comprises an automatic unhooking system (2) and a position adjustment system (3) which are arranged on a spreader system (1), wherein the spreader system comprises two main lifting beams (101) which are arranged in parallel, lifting arms (102) being hinged to the outer sides of the main lifting beams, the two opposite lifting arms being connected by means of the automatic unhooking system, and the lifting arms being configured to hold a prefabricated concrete block (4); the automatic unhooking system comprises a fixing frame (204), connecting rods (201) being symmetrically and telescopically provided on two sides of the fixing frame, and the connecting rods being hinged to the lifting arms; and the position adjustment system comprises a second jack (304) which is connected to a lock plate (301) by means of a sliding block (302). The efficient lifting device further comprises a fixing unit (9) detachably arranged on a lifting hook (10), wherein the fixing unit comprises a fixed pulley (901), two fixing cables (7) being wound around the fixed pulley, and both ends of each fixing cable being fixedly arranged on the main lifting beams. The lifting device can greatly improve the safety and efficiency of the lifting of a prefabricated concrete block, and can make an adjustment according to the angle of inclination of a slope, and has high adaptability.

IPC Classes  ?

• B66C 1/30 - Duplicate, e.g. pivoted, members engaging the loads from two sides and also arranged to grip the sides of the loads

Abstract

The present invention relates to the technical field of bridge engineering quality inspection, and in particular, to a reinforcing bar part quality inspection method based on unmanned aerial vehicle image point cloud data. The method comprises: acquiring image data of a reinforcing bar part at a certain height from the reinforcing bar part by means of a camera mounted on an unmanned aerial vehicle, and performing aerial triangulation calculation and point cloud data reconstruction on the image data to construct a three-dimensional point cloud model of the reinforcing bar part; positioning and extracting a reinforcing bar on the top surface of the reinforcing bar part; filtering and denoising the extracted reinforcing bar e; clustering single reinforcing bars of the denoised reinforcing bar part; performing parameter fitting on each single reinforcing bar to realize circle center positioning and diameter calculation of the top surface of the reinforcing bar; and inspecting the quality of the reinforcing bar part by taking the circle center of the top surface as basic data. High-precision, automatic and rapid inspection of reinforcing bar parts can be achieved, thereby effectively reducing the labor intensity of construction workers.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06V 20/17 - Terrestrial scenes taken from planes or by drones
• G06V 20/10 - Terrestrial scenes

Abstract

Disclosed in the present invention is an integral installation method for a superstructure of an offshore pile-foundation marine building. A wharf superstructure is provided with protruding transverse beams or longitudinal beams on a bottom face, and is installed by performing jacking by means of a pile top jacking device which is provided with a three-way hydraulic jack in the middle and vertical hydraulic jacks on two sides. The specific steps of jacking installation of the wharf superstructure between pile foundations are as follows: step 1, a pile top jacking device is installed at the top of a pile cap; step 2, the height of the three-way hydraulic jack in the middle is lowered to below the bottom elevation of the protruding transverse beam or longitudinal beam; step 3, the three-way hydraulic jack is moved to the rear of the protruding transverse beam or longitudinal beam of the wharf superstructure, and then the vertical hydraulic jack is installed behind the wharf superstructure; and step 4, the wharf superstructure is jacked forwards by means of the three-way hydraulic jack in the middle. The integrated jacking and traction installation method used in the present invention has the advantages of a low construction risk, high safety, a high construction efficiency and so on.

IPC Classes  ?

• E02D 7/14 - Components for drivers

Abstract

An automatic mounting robot system for a tower column tie bar, the system comprising an inner cavity platform (1) and an outer cavity platform (3). The inner cavity platform (1) and the outer cavity platform (3) are arranged on two sides of a rebar section (2), an automatic feeding manipulator (8) is arranged on the outer cavity platform (3), and a tie bar rack (7) is arranged on a side of the automatic feeding manipulator (8); a welding manipulator (18) is arranged on the inner cavity platform (1), and a bending and welding device is arranged on the welding manipulator (18); and the automatic feeding manipulator (8) makes a straight end of a tie bar penetrate the rebar section (2), and the welding manipulator (18) bends the straight end of the tie bar and welds same to the rebar section (2) by means of the welding device. The robot system uses mechanical devices to complete automatic loading, point finding, feeding, mounting, bending, welding and other operations on tie bars, replaces manual operations, and implements automatic mounting of the tie bars.

IPC Classes  ?

• B23P 23/00 - Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
• B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers

Abstract

A rebar spacing measurement method and system based on binocular vision. The method comprises: acquiring a plurality of images of bound rebars at different angles, and extracting edge lines from each image; according to the edge lines in each image, obtaining intersection points of the rebars in each image; performing three-dimensional reconstruction according to the intersection points of the rebars in each image, so as to obtain three-dimensional coordinates of the intersection points of the rebars; and traversing the three-dimensional coordinates of the intersection points of the rebars, so as to obtain the spacing between the rebars. The rebar spacing measurement method and system based on binocular vision solve the problem of it not being possible for image technology to distinguish intersection points of bound rebars on different spatial planes, and thus needing to place a calibration object on the surface of a rebar to be tested. The technique is easily used; high precision, a high speed and strong applicability are achieved; the measurement efficiency and accuracy of bound rebars are improved; the labor intensity of workers is reduced; and the phenomena of a heavy workload, low efficiency and being prone to false measurements and missing measurements that are caused by performing manual measurements using a steel ruler are effectively mitigated.

IPC Classes  ?

• G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

Abstract

Disclosed in the present invention is a cable strand unmanned follow-up traction intelligent recognition system based on machine vision, comprising: a data acquisition module, configured to acquire a front view image and a rear view image of a pull device and position information of the pull device; a data wireless transmission module, configured to transmit data of the data acquisition module; an edge computing terminal, configured to receive the front view image and the rear view image of the pull device and the position information of the pull device, wherein the edge computing terminal further comprises a cable strand attitude anomaly recognition module and an anomaly state early warning module, and the cable strand attitude anomaly recognition module is configured to recognize a cable strand anomaly state and give an alarm by means of the anomaly state early warning module; and a receiving end, configured to receive anomaly alarm information sent by the anomaly state early warning module. Further disclosed in the present invention is a cable strand unmanned follow-up traction intelligent recognition method based on machine vision. The present invention improves the intelligent level of on-site cable strand erection, saves manpower, improves the traction efficiency, has strong operability, and is suitable for engineering sites.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06K 9/62 - Methods or arrangements for recognition using electronic means

Abstract

A general steel sleeve structure of a multi-specification shield machine and a use method thereof. The general steel sleeve structure comprises: a sleeve body (1) that is of a cylindrical structure having an opening end, a supporting frame (11) being provided at the bottom of the sleeve body (1); multiple telescopic mechanisms (2) that are provided on the inner wall of the sleeve body (1) in the circumferential direction, each telescopic mechanism (2) having one end fixed on the inner wall of the sleeve body (1) and the other end being a free end, and the telescopic mechanism (2) performing telescoping motion in the radial direction of the sleeve body (1); multiple airbags (3) that are provided on the inner wall of the sleeve body (1) in the circumferential direction, an air inflation device being provided to inflate the airbags (3); feed pipes (4) that enable the inside and outside of the sleeve body (1) to be communicated with each other and are used for feeding materials into the sleeve body (1); and a reaction frame (5) that is provided at one end of the sleeve body (1), the reaction frame (5) being of a triangular support structure as a whole.

IPC Classes  ?

• E21D 9/06 - Making by using a driving shield

Abstract

The present invention relates to the technical field of segmental beam prefabrication methods, and particularly relates to a segmental beam prefabrication method. The method is performed according to the following steps: S1, casting a segmental beam at a prefabrication station, building male spline teeth on a male-spline-tooth side of the segmental beam, and building a planar surface on a female-spline-tooth side of the segmental beam; S2, after the prefabrication of the segmental beam is completed, transferring the segmental beam to a steam-curing station to perform curing; S3, arranging a carving robot at the end of the steam-curing station that corresponds to female spline teeth of the segmental beam; and S4, milling the planar surface at one end of the female spline teeth of the segmental beam by using the carving robot, so as to build the female spline teeth, thus completing the prefabrication of the segmental beam. The segmental beam prefabrication method of the present invention is simple, has extremely high machining efficiency for female spline teeth, has an extremely wide range of applications, can be applied to the prefabrication operation of various segmental beams having different specifications, and has great generalization value.

IPC Classes  ?

• B28B 15/00 - General arrangement or layout of plant
• B28B 7/00 - MouldsCoresMandrels
• B28B 11/24 - Apparatus or processes for treating or working the shaped articles for curing, setting or hardening
• B28B 11/08 - Apparatus or processes for treating or working the shaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads

Abstract

Disclosed in the present invention is a construction control method for a partition type concrete diaphragm wall anchorage foundation. The construction control method comprises: step 1, designing a partition type concrete diaphragm wall anchorage foundation structure; step 2, splicing first-stage steel box joints; step 3, constructing first-stage grooves; step 4, mounting the first-stage steel box joints; step 5, visually casting steel box concrete in the first-stage grooves; step 6, constructing second-stage grooves, mounting a second-stage reinforcing cage, and casting concrete to complete second-stage groove section construction; step 7, reinforcing a foundation for the partition type concrete diaphragm wall; and step 8, excavating a foundation pit inside the partition type concrete diaphragm wall, and sequentially carrying out underwater bottom sealing, base plate, core filling body and top plate construction in the foundation pit from bottom to top to complete the construction of the partition type concrete diaphragm wall anchorage foundation. The partition type concrete diaphragm wall anchorage foundation of the present invention has the advantages of both the concrete diaphragm wall anchorage foundation and an open caisson anchorage foundation, and has excellent adaptability to the formation, and the construction control method of the present invention can improve the construction quality of the anchorage foundation and accelerate construction.

IPC Classes  ?

• E02D 27/30 - Foundations made with permanent use of sheet pile bulkheads, walls of planks, or sheet piling boxes
• E02D 3/12 - Consolidating by placing solidifying or pore-filling substances in the soil
• E02D 33/00 - Testing foundations or foundation structures

Abstract

A new superstructure for a high-piled wharf, and a construction apparatus and construction method therefor. With respect to a combined form of two inclined piles or three inclined piles of a pile foundation, construction platforms (6) are jointly arranged at the top of the pile foundation, a traditional pile cap structure is eliminated, and multiple water cast-in-situ operations such as water pumping in a steel pipe pile (1), binding of pile-cap reinforced bars, formwork mounting, and concrete pouring of a pile core and a pile cap are avoided overall. By means of the designing of a prefabricated pile core (2), the construction platform (6), componentization of joint reinforced bars (11), ultra-high-performance concrete anchoring connection, etc., a new fully assembled superstructure for a high-piled wharf is formed; and the new superstructure for a high-piled wharf is continuously operated by means of a hoisting apparatus which is supported on the construction platforms (6) and has the functions of transverse and longitudinal self-traveling and swiveling on the wharf, thereby realizing the full-assembly design and construction of the high-piled wharf suitable for combined inclined piles overall.

IPC Classes  ?

• E02B 3/06 - MolesPiersQuaysQuay wallsGroynesBreakwaters

Abstract

Disclosed in the present invention is a universal segment rubber sealing gasket sliding test apparatus, comprising: a base placed horizontally, two counter-force beams being arranged on the base at intervals, and a counter-force frame being provided at the end of the base distant from the counter-force beams; an upper sliding block having two ends slidably connected to the two counter-force beams respectively, and capable of vertically sliding along the two counter-force beams; a lower sliding block slidably connected to an upper end surface of the base; and an oil cylinder having a fixed end fixedly connected to the counter-force frame and a movable end fixedly connected to the lower sliding block, and used for driving the lower sliding block to horizontally slide along the upper end surface of the base. Pressing blocks are detachably connected to opposite sides of the upper sliding block and the lower sliding block respectively, notches are respectively formed in opposite side surfaces of the two pressing blocks, and the notches are used for pasting a rubber sealing gasket to be tested. According to the present invention, the condition of deformation and extrusion of the rubber sealing gasket in an actual segment assembling process can be truly simulated, the use is convenient, and the operation is easy.

IPC Classes  ?

• G01N 3/02 - Investigating strength properties of solid materials by application of mechanical stress Details
• G01M 13/005 - Sealing rings

Abstract

Disclosed in the present invention are an intelligent measurement and control system for the short-line matching prefabrication of a segmental girder, and a use method thereof. The intelligent measurement and control system for the short-line matching prefabrication of a segmental girder comprises an automatic measurement sub-system, a bottom die trolley intelligent location adjustment sub-system, a side die automatic combination sub-system and an inner die automatic combination sub-system. When the intelligent measurement and control system for the short-line matching prefabrication of a segmental girder is used, the centroid coordinates of the current matched girder segment are calculated according to measurement point data that is measured by the automatic measurement sub-system in real time, and same are compared with expected centroid coordinates; and an error and an error change rate are fed back to the bottom die trolley intelligent location adjustment sub-system in order to adjust the spatial attitude of a matched girder segment in real time, such that the intelligent adjustment of a bottom die trolley is realized, thereby significantly improving the location adjustment precision and efficiency of a bottom die. In addition, barriers of data interconnection between systems are broken through in conjunction with the side die combination sub-system and the inner die combination sub-system, such that intelligent operations during the whole process of "measurement-location adjustment-combination-remeasurement" of a prefabricated template of a segmental girder are realized, thereby significantly improving the industrial construction level of segmental girder prefabrication.

IPC Classes  ?

• B28B 15/00 - General arrangement or layout of plant
• B28B 17/00 - Details of, or accessories for, apparatus for shaping the materialAuxiliary measures taken in connection with such shaping

Abstract

Disclosed in the present invention is a forming process for an ultra-large-diameter annular reinforcing mesh component, the forming process comprising the following steps: S1, preparing a planar reinforcing mesh; S2, bending and forming the planar reinforcing mesh to form a semi-circular reinforcing mesh, and abutting and fixing two arc reinforcing meshes to form an annular mesh; and S3, abutting and fixing a plurality of annular meshes to form an annular component. In the present invention, planar reinforcing meshes are mechanically produced, then, the meshes are bent into arcs by using a special arc-bending apparatus, and finally, the meshes are joined into rings and provided with drag hook ribs in an insertion manner to finally form a component, such that the manpower input for steel bar binding can be reduced, the steel bar binding quality is improved, and the bridge tower construction efficiency is improved.

IPC Classes  ?

• B21F 27/12 - Making special types or portions of network by methods or means specially adapted therefor
• B21F 27/10 - Making wire network, i.e. wire nets with additional connecting elements or material at crossings with soldered or welded crossings
• B21F 1/00 - Bending wire other than coilingStraightening wire

Abstract

A long-service-life PWS cable with replaceable sleeve and shielding gas. It consists of wire strands, wrapping tape covering the wire strands, and a sheath arranged outside the wire strands, and is characterized in that the sheath is covered with an outer protective sleeve and shielding gas is filled between the wires in the wire strands. The wire strands of the present invention is completely under protection in a shielding gas environment which effectively avoids the corrosion of the wire strands; the protective sleeve outside the sheath of the PWS cable is a replaceable segmented and fragmented sleeve structure, which is convenient to be replaced and installed, substantially prolonging the service life of the PWS cable system with great promotional value achieved.

IPC Classes  ?

• E01D 19/16 - Suspension cablesCable clamps for suspension cables
• E01D 11/04 - Cable-stayed bridges
• E01D 19/14 - TowersAnchorsSaddle supports
• E01D 22/00 - Methods or apparatus for repairing or strengthening existing bridges

Abstract

Disclosed is a long-service-life inhaul cable with a replaceable sheath, wherein same relates to the technical field of bridge structures. The long-service-life inhaul cable comprises wire tendons (1), a wrapping tape (2) covering the wire tendons (1), and the sheath (3) arranged outside the wire tendons (1). An outer-layer protective sleeve (4) is sleeved on the sheath (3), and the space between the wire tendons (1) is filled with a shielding gas (5). The wire tendons are entirely within the protective environment of the shielding gas, the problem of corrosion of the wire tendons is effectively avoided, and a protective jacket located outside the wire tendons is of a replaceable, segmented and fragmented sleeve structure, such that replacement and installation are convenient, the service life of a stay cable system is substantially prolonged, and a great promotional value is achieved.

IPC Classes  ?

• E01D 19/16 - Suspension cablesCable clamps for suspension cables

Abstract

A construction method and construction system for overwater bored piles based on an incremental launching movement platform. N rounds of driven steel casings (600) are used as a base; after a first round of driven steel casings (600) is removed, pile top incremental launching positioning devices (100) are mounted on the pile tops of the driven steel casings (600), and then a construction platform is set up on the pile top incremental launching positioning devices (100); an (N+1)th round of steel casings is driven, and meanwhile, construction on bored piles of the first round of steel casings (600) is completed; then the construction platform is pushed to move forwards to the (N+1)th round of steel casings (600) by using the pile top incremental launching positioning devices (100) and the construction platform is locked, and driving of an (N+2)th round of steel casings (600) and construction on bored piles of the second round of steel casings (600) are completed until construction of all the bored piles is completed. The present invention has the advantages: the structure is simple; operation is convenient; by using the driven steel casings (600) as a pile driving base, the stability of the construction system can be greatly improved, the accuracy of bored pile construction is ensured, and the construction procedure is simple.

IPC Classes  ?

• E02D 5/40 - Concrete or concrete-like piles cast in position making by use of mould-pipes or other moulds in open water

Abstract

A pile top pushing and positioning device, comprising a pile top positioning base (101). The bottom of the pile top positioning base (101) is provided with a positioning groove (103) matching the pile top of an engineering pile (102). A supporting frame (104) is provided above the pile top positioning base (101). A lift adjustment device (105) is connected between the supporting frame (104) and the pile top positioning base (101). A three-direction jack (106) and a locking device (108) that matches and is fixed to a bottom plate of a bearing platform (107) are fixed on a top plate of the supporting frame (104).

IPC Classes  ?

• E02B 17/04 - Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction

Abstract

A pile top-supported walking type moving pile-driving platform, comprising a pile top pushing and positioning device provided at the top of a steel pipe pile (102). A bearing platform (107) is provided on the pile top pushing and positioning device. An operation platform (200) is fixed on the bearing platform (107). A large bent guide frame (201) is provided in the front of the operation platform (200). Either the left or right side of the bearing platform (107) is provided with a small bent guide frame (202) respectively. The front and back sides of the bearing platform (107) are provided with installation platforms (203) at the positions corresponding to the steel pipe pile (102).

IPC Classes  ?

• E02D 7/14 - Components for drivers

Abstract

A short-line match-casting-based precast template system for a girder bridge having a composite structure and corrugated steel webs. The system comprises: a fixed end formwork (1) and a fixed end formwork support (2), outer formworks (3) and outer formwork supports (4), an inner formwork (5) and an inner formwork support (6), a bottom formwork (7) and a bottom formwork support (8), a bottom formwork trolley (9), and a hydraulic system. The fixed end formwork (1) comprises an upper portion (14) and a lower portion (15), and push-pull movable blocks (16) are provided at where the upper portion (14) abuts the corrugated steel webs (13) to facilitate placement of the corrugated steel webs (13) into the formworks. Also disclosed are a device for sealing a steel-concrete joint used in the short-line match-casting-based precast template system, and a method of applying the short-line match-casting-based precast template system. The template system can solve the problem of high installation precision requirements of corrugated steel webs (13) and difficulties in placing rebar cages (45, 46) in formworks.

IPC Classes  ?

• B28B 7/26 - Assemblies of separate moulds