A method for constructing a digital twin monitoring model for slopes based on a proxy model includes S101-S104. S101, a slope geometric model consisting of M triangular facets is constructed. S102, a first training dataset is constructed for pretraining a pre-proxy model by using the slope geometric model. S103, monitoring data of the M triangular facets are collected in real-time to construct a second training dataset for training the proxy model. S104, a warning cloud map of the slopes is generated. The method uses the slope geometric model to obtain simulation data under multiple physical field conditions. It constructs training dataset of pretraining pre-proxy model based on the simulation data, which greatly reduces training samples. Moreover, the multiple base learners in the proxy model can reduce the computational bias of a single time-series analysis model, improving the prediction accuracy of the proxy model.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation
2.
FROST-HEAVING-RESISTANT PILE SYSTEM AND CONSTRUCTION METHOD
A frost-heaving-resistant pile system and a construction method. The frost-heaving-resistant pile system comprises a variable-cross-section pile body (1), an upright pile body (2) connected to the bottom of the variable-cross-section pile body (1), and a geothermal pipe (3) pre-buried in the variable-cross-section pile body (1) and the upright pile body (2). At least one variable-cross-section pile body (1) is arranged above the upright pile body (2); the variable-cross-section pile body (1) comprises a truncated cone portion (11) and an inverted truncated cone portion (12); the inverted truncated cone portion (12) is connected to the bottom of the truncated cone portion (11); and the geothermal pipe (3) is connected to a ground source heat pump set. The truncated cone portion (11) is combined with the inverted truncated cone portion (12) to form the variable-cross-section pile body (1), thereby achieving an effect of actively weakening a frost-heaving force, facilitating decomposition and conversion of the force, effectively reducing the frost-heaving effect of frost-heaving shear stress on a pile foundation, and improving the heaving resistance stability of the pile foundation; and the geothermal pipe (3) can effectively heat the variable-cross-section pile body (1) and the upright pile body (2), improving the frost-heaving resistance of the pile body. Such a frost-heaving-resistant pile structure can effectively improve the reliability of a pile foundation in a frozen area and facilitate reduction of economic costs of pile foundation manufacturing and construction.
E02D 31/14 - Protective arrangements for foundations or foundation structuresGround foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against frost heaves in soil
F24T 10/40 - Geothermal collectors operated without external energy sources, e.g. using thermosiphonic circulation or heat pipes
3.
DISSIMILAR MATERIAL JOINING METHOD FOR TITANIUM AND SOLDER FOR SEALING VACUUM CONTAINER
The present application relates to the technical field of soldering, and specifically discloses a dissimilar material joining method for titanium and solder for sealing a vacuum container. The joining method comprises: firstly, designing and preparing a metal transition segment; secondly, designing and preparing a cladding material; thirdly, selecting a cladding heat source and a cladding method, implementing cladding, and preparing a bimetallic layer; fourthly, punching the bimetallic layer to form a hole, and preparing a bimetallic layer punching structural part; fifthly, selecting a joining heat source and a joining method, implementing joining, and preparing a dissimilar material structural assembly for vacuum sealing; sixthly, using a soldering method to prepare a whole container; and seventhly, starting a vacuum furnace, and implementing vacuum sealing to prepare a vacuum container. The dissimilar material joining method provided by the present application has a simple joining process, high efficiency, a low cost, small stress and deformation, and can prevent a brittle structure from being formed; a formed combined connecting joint has good internal quality, high bonding strength, and good impact resistance, heat preservation efficiency and sealing performance; and the service life of the container is long.
A method of predicting tunnel boring machine (TBM) jamming based on deep neural network and numerical simulation and a system thereof are provided, belonging to the technical field of tunnel boring. The method including the following steps: constructing a jamming numerical sample library by using s numerical simulation technology; establishing a jamming prediction model based on the jamming numerical sample library by using a Convolutional Neural Network (CNN) and a Transformer; and implementing real-time monitoring and early warning of TBM jamming by using the jamming prediction model. The present application realizes the real-time monitoring and early warning of TBM jamming, reduces or avoids the jamming phenomenon, and improves the safety and efficiency of TBM construction.
A trenchless multi-stage pipe cleaning device and method combining an artificial tornado and dagger-like mechanical sand is provided. The trenchless multi-stage pipe cleaning device includes a primary pipe cleaning device and a secondary pipe cleaning device that are connected. An outer wall of the pipe cleaning device is provided with multiple air inlet joint pipes evenly distributed in a circumferential direction. The air inlet joint pipes are connected to an air compressor. Each of the air outlet joints is connected to a nozzle. The primary pipe cleaning device is connected to a vibrating screen. The trenchless multi-stage pipe cleaning device further includes a back-end sewage discharge device. In the trenchless multi-stage pipe cleaning method, the mechanical sand continuously scrape and collide with the inner wall of the cleaning target, so as to achieve a desired efficient trenchless water-free pipe cleaning effect.
B08B 9/027 - Cleaning the internal surfacesRemoval of blockages
B08B 9/032 - Cleaning the internal surfacesRemoval of blockages by the mechanical action of a moving fluid, e.g. by flushing
B08B 9/035 - Cleaning the internal surfacesRemoval of blockages by the mechanical action of a moving fluid, e.g. by flushing by suction
B24C 1/08 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods for polishing surfaces, e.g. by making use of liquid-borne abrasives
B24C 3/32 - Abrasive blasting machines or devicesPlants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
The present disclosure discloses a bionic cuttlefish-typed underwater detection robot, including a bionic “cuttlefish”-typed body structure, a piezoelectric energy capture device, a circuit rectification and storage assembly and a power control assembly. The bionic “cuttlefish”-typed body structure includes a head and a main body; the piezoelectric energy capture device includes piezoelectric ceramic elements arranged around the main body and PVDF floating belts, and an end of each piezoelectric ceramic element is connected to a spherical spoiler component, the PVDF floating belts are evenly distributed at a tail end of the main body. The present disclosure adopts piezoelectric ceramic elements with spoiler components and PVDF floating belts to generate electricity, converts wave energy and ocean current energy into electric energy, powers the power control assembly of the detection robot. It has high power generation efficiency and stable current, and realizes the autonomous operation of the underwater detection robot.
G05D 1/656 - Interaction with payloads or external entities
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
H02J 7/32 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover
H02N 2/18 - Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
G05D 105/80 - Specific applications of the controlled vehicles for information gathering, e.g. for academic research
G05D 107/00 - Specific environments of the controlled vehicles
Method for identifying vibration magnitude of tunnel boring machine (TBM) main beam using geological feature parameter and tunneling feature parameter constructed based on TBM tunneling parameters
Disclosed is a method for identifying a vibration magnitude of a TBM main beam using a geological feature parameter and a tunneling feature parameter constructed based on tunnel boring machine (TBM) tunneling parameters. The method includes: collecting vibration signals of the main beam and tunneling parameters of a TBM through an in-situ tunneling test and preprocessing such data, researching a correlation law between the tunneling parameters and a vibration feature root mean square (RMS), providing two feature parameters of a field penetration index (FPI) and a cutterhead power index (TNI), establishing a multivariate regression prediction model for vibration of the TBM main beam based on the feature parameters, and verifying and analyzing the model under different surrounding rock conditions. An average relative error of prediction is 12% or within, and a quantitative relation between the vibration features of the main beam and the feature parameters of the TBM is given.
A polybenzoxazine aerogel film and a preparation method thereof are provided in the present disclosure, belonging to the field of preparation of aerogel film composite material. The preparation method of the polybenzoxazine aerogel film includes the following steps: dissolving benzoxazine monomer in a solvent and catalyzing to obtain a polybenzoxazine solution; coating the polybenzoxazine solution as a wet gel film; and aging and drying the wet gel film to obtain the polybenzoxazine aerogel film.
C08J 9/28 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
The present disclosure provides a method for constructing a time-varying constitutive model of a seawater-aged GINA gasket for an immersed tube tunnel and relates to the technical field of research of immersed tube waterproof equipment. The method includes the following steps: obtaining stress relaxation curves at different aging temperatures; determining an aging performance change value P of rubber used for a GINA gasket; determining a stress-strain relation curve of the GINA gasket; obtaining a stress-strain relation curve of a full aging cycle; and constructing a constitutive model of stress relaxation and seawater aging of the GINA gasket. According to the present disclosure, a service state of the GINA gasket can be dynamically monitored, which provides a basis for service life evaluation of the GINA gasket and early warning on a risk of the GINA gasket.
G01N 17/00 - Investigating resistance of materials to the weather, to corrosion or to light
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
10.
Method for designing squeezed branch pile based on orthogonal design and finite element analysis
A method includes: designing an orthogonal design table of four factors and three levels, and obtaining nine groups of structural parameters; performing a numerical simulation calculation through a finite element software to obtain nine groups of simulation results, and recording in the orthogonal design table; determining a first design parameter based on the vertical bearing performance according to the nine groups of simulation results; determining a second design parameter based on economic efficiency; and determining a design parameter according to the first design parameter and the second design parameter, and designing the squeezed branch pile according to the design parameter.
G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
SJZ Transportation Investment Dev. Group Co., Ltd. (China)
Shijiazhuang Institute of Railway Technology (China)
Inventor
Hu, Zhinan
Wang, Huibin
Meng, Shuopeng
Wang, Yonggang
Liu, Zhanliang
Gao, Shang
Guan, Haining
Li, Biao
Sun, Guangxian
Sun, Yadong
Chai, Wenkai
Zhou, Jiancheng
Abstract
The present disclosure provides a method and system for automatically monitoring and identifying water seepage of a segment joint of a subway shield tunnel. The method includes: 1): grinding a water-sensitive material and then mixing with a waterproof material to form a color-developing agent; 2): coating the color-developing agent on two sides extending from a construction joint and/or a deformation joint of a tunnel lining as a center line, to form a color-developing layer; and 3) obtaining a color development feature of the color-developing layer, and identifying water seepage based on the color development feature. According to the present disclosure, a water seepage amount can be determined based on the color development feature of the color-developing layer around the construction joint and/or the deformation joint of the tunnel lining, which facilitates monitoring of the water seepage amount around the construction joint and/or the deformation joint.
A foldable windproof unit, a large-span windproof net structure thereof, and a windproof method. The foldable windproof unit comprises a flexible windproof net, towers arranged at intervals, and a load-bearing rope erected on the two towers. The tower on one side is provided with a horizontal pulley assembly, and the tower on the other side is provided with two vertical pulleys. The top edge of the flexible windproof net is slidably connected to the load-bearing rope by means of a plurality of hanging structures. The foldable windproof unit further comprises a traction rope, the traction rope is arranged on the horizontal pulley assembly in a sleeving manner, and the two free ends of the traction rope extend to respectively bypass the two vertical pulleys and are connected to winding mechanism. The hanging structure close to the tower on one side is fixedly connected to the traction rope.
Provided in the present invention are an artificial tornado sharp-dagger composite trenchless multistage pipe cleaning device and a pipe cleaning method thereof. The device comprises a first-stage pipe cleaning device and a second-stage pipe cleaning device, which are connected. A plurality of air intake joint pipes are circumferentially uniformly distributed on an outer wall surface of the pipe cleaning device; the air intake joint pipes are connected to an air compressor; each air output joint is connected to a nozzle; and the first-stage pipe cleaning device is connected to a vibrating screen. The device further comprises a dirt discharge device at a rear end. Compressed air is conveyed into an inner cavity of the pipe cleaning device; sand particles are entrained to form a first-stage gas-solid mixed flow, and then is carried to the second-stage pipe cleaning device; and a plurality of high-speed air streams, which are obliquely and tangentially injected into an inner cavity of a second-stage pipe cleaning device body, can form an artificial tornado, such that the gas-solid mixed flow has a spiral movement trajectory and moves forward in such a way of being tangent to an inner wall surface of a workpiece to be cleaned, thereby forming a second-stage gas-solid mixed flow. In said process, the sand particles continuously scratch and collide with the inner wall surface of the workpiece to be cleaned, such that an expected trenchless waterless efficient pipe cleaning effect is achieved.
A seawater aging immersed tunnel GINA water stop time-varying constitutive model construction method, comprising the steps of: obtaining stress relaxation curves at different aging temperatures; determining an aging performance change value P of rubber used by a GINA water stop; determining a stress-strain relationship curve of the GINA water stop; obtaining a stress-strain relationship curve of a full aging period; and constructing a constitutive model of GINA water stop stress relaxation and seawater aging. The method can achieve dynamic monitoring on the service state of a GINA water stop, providing a basis for service life evaluation and risk early warning of the GINA water stop.
E21D 9/00 - Tunnels or galleries, with or without liningsMethods or apparatus for making thereofLayout of tunnels or galleries
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G01N 3/08 - Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
15.
Method for real-time strength estimation, grading, and early warning of rock mass in tunnel boring machine (TBM) tunneling
v of the TBM boring rock mass in real time according to boring parameters acquired by a TBM in real time, and performing grading and early warning on the TBM boring rock mass according to a given grading standard and early warning values.
E21F 17/18 - Special adaptations of signalling or alarm devices
E21D 9/00 - Tunnels or galleries, with or without liningsMethods or apparatus for making thereofLayout of tunnels or galleries
E21D 9/087 - Making by using a driving shield with additional boring or cutting means with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
G01V 99/00 - Subject matter not provided for in other groups of this subclass
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G06F 30/20 - Design optimisation, verification or simulation
G06Q 10/0639 - Performance analysis of employeesPerformance analysis of enterprise or organisation operations
G06F 119/14 - Force analysis or force optimisation, e.g. static or dynamic forces
16.
SQUEEZED BRANCH PILE OPTIMIZATION DESIGN METHOD BASED ON ORTHOGONAL TEST AND FINITE ELEMENT ANALYSIS
The application relates to a squeezed branch pile optimization design method based on an orthogonal test and finite element analysis. The method comprises: according to an optimization target, determining a four-factor three-level orthogonal test table, and obtaining structural parameters of 9 groups of squeezed branch model piles according to the orthogonal test table; by means of a finite element software, carrying out numerical simulation calculation on the basis of soil body model parameters and the structure parameters of the nine groups of the squeezed branch model piles, so as to obtain 9 groups of simulation results, and recording the simulation results into the orthogonal test table; according to the 9 groups of simulation results, obtaining an optimization design parameter I of the squeezed branch model piles under the evaluation index of vertical bearing performance; according to the optimization design parameter I and the structural parameters of the 9 groups of squeezed branch model piles, obtaining an optimization design parameter II under the evaluation index of economic efficiency; according to the optimization design parameter I and the optimization design parameter II, obtaining optimal design parameters, and designing the squeezed branch model pile according to the optimal design parameter. In the present application, the method is simple, and the result is scientific and effective.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
A test system and test method continuously and intelligently measures water content of subgrade in real time. The test system is based on the theory of resistivity, and is equipped with a wheeled machine to measure the water content of subgrade. The wheeled machine includes scroll roller. The test system includes: at least one set of electrode including four probes wherein detection parts of the four probes are linearly and equidistantly arranged on the scroll roller. The arrangement direction of the detection parts of the four probes is parallel to the axis of the scroll roller; a data integration apparatus is connected to the four probes and used for performing data calculation, analysis, and transmission; the electric source is connected to data integration apparatus and used for supplying a working current. The system and method can realize automatic signal collection, non-destructive detection of subgrade soil and dynamic water content measurement.
G01N 27/04 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
E01C 19/28 - Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
E01C 23/01 - Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed supportsApplications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
A measuring device for snow flux and accumulated snow density at different heights, which comprises a shell, a plurality of collection devices and a support frame, the first side of the shell is provided with a plurality of collection ports along the height direction of the shell; each collection device comprises a collection pipe, a storage pipe and a fixed bolt, the first end of the collection pipe is horizontally arranged, the first end of one collection pipe is arranged in one collection port, both the second end of the collection pipe and the storage pipe are obliquely arranged downwards, the second end of the collection pipe and the first end of the storage pipe are detachably connected and communicate with each other; and the shell is detachably connected with the support frame.
G01N 9/04 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity by measuring weight of a known volume of fluids
G01W 1/02 - Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
19.
METHOD AND SYSTEM FOR CALCULATING AERODYNAMIC FORCE OF WIND TURBINE AIRFOIL UNDER DIFFERENT TURBULENCE INTENSITIES
The present disclosure provides a method and system for calculating aerodynamic force of a wind turbine airfoil under different turbulence intensities. The method of the present disclosure includes: calculating a lift coefficient and a drag coefficient according to measured wind pressure, performing function fitting to obtain a fitted lift coefficient model and a fitted drag coefficient model at the different turbulence intensities, and selecting a corresponding fitted lift coefficient model and drag coefficient model according to a turbulence intensity on a wind turbine to be measured, to directly calculate a lift coefficient and a drag coefficient for the aerodynamic force of the airfoil.
A measuring device for snow flux and snow density at different heights, which relates to the field of wind and snow flow disaster prediction, prevention and handling, comprising: a housing (1), a first side (101) of which is provided with a plurality of collection ports (2) along the height direction of the housing (1); a plurality of collection devices, wherein each collection device is disposed inside the housing (1), each collection device comprises a collection tube (4), a storage tube (5) and a fixing bolt (9), first ends of the collection tubes (4) are horizontally arranged, the first end of one collection tube (4) is disposed inside of one collection port (2), second ends of the collection tubes (4) and the storage tubes (5) are all arranged obliquely downward, the second ends of the collection tubes (4) are detachably connected to first ends of the storage tubes (5) and the two communicate with each other, second ends of the storage tubes (5) are sealed, the fixing bolts (9) penetrate the housing (1) and are fastened by means of first nuts, and the second ends of the storage tubes (5) are supported on the fixing bolts (9); and a support frame (6), wherein the housing (1) is detachably connected to the support frame (6), and the support frame (6) is detachably connected to the ground. The foregoing measuring device is convenient for weighing snow particles, facilitates the storage of snow particles, and has good stability in harsh environments.
A system and method for continuously and intelligently measuring a water content of a roadbed in real time. The measurement system is based on the theory of resistivity, and is equipped with a wheeled machine to measure a water content of a roadbed. The wheeled machine comprises a roller (8). The measurement system comprises: at least one set of electrodes (1) including four probes (a, b, c, d), wherein detection portions of the four probes (a, b, c, d) are linearly arranged at intervals at the roller (8), and a direction in which the four probes (a, b, c, d) are arranged is parallel to an axis of the roller (8); a data integration device (10) respectively connected to the four probes (a, b, c, d) and used to perform computation, analysis and transmission of data; and a power source (11) connected to the data integration device and used to supply an operating current. The invention can realize automatic signal collection, non-destructive roadbed soil detection and dynamic water content measurement.
G01N 27/04 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
22.
SELF-PROPELLED VEHICLE FOR REMOVING SAND FROM TRACK
CHINA RAILWAY NO.3 GROUP CO., LTD THE TRANSPORTATION ENGINEERING BRANCH CONMPANY (China)
Inventor
Liu, Zhiru
Wu, Wenjiang
Wei, Qing Shan
Lv, Yanjun
Cao, Xue Feng
Han, Lei
Li, Yumei
Zheng, Mingjun
Duan, Chenghua
Yang, She
Liu, Ruijie
Gao, Zhanfeng
Yan, Jiquan
Zhao, Chenlei
Zhang, Yu
Li, Jun
Liu, Ting
Wang, Gang
Liu, Guodong
He, Yunzheng
Li, Naisong
Li, Lu
Liu, Hong
Gao, Yunpeng
Yang, Wei
Wang, Longqing
Abstract
The present invention relates to the technical field of railway track maintenance devices, and disclosed thereby is a self-propelled vehicle for removing sand from a track. The vehicle comprises a driving cab, a walking apparatus and a sand collecting and discharging apparatus; a console is provided within the driving cab, the sand collecting and discharging apparatus is provided at the front of the driving cab, and the walking apparatus is provided below the driving cab, the walking apparatus being provided on a chassis of the driving cab; the walking apparatus comprises walking wheels, working wheels and driven wheels, and the walking wheels, working wheels and driven wheels are all provided on the chassis; the walking wheels for fast walking are driven by power components, and the working wheels for slow travel are driven by driving components. A driver can operate the driving components and power components by means of the console in the driving cab. By means of operating lifting components, the walking wheels and the working wheels alternately cooperate with a track to adapt to low-speed driving when in a sand-cleaning working state and to high-speed driving during transition, which meets the requirements for low-speed driving to clean the sand within the track as well as for high-speed driving and fast transition, reduces the intensity of labor for working personnel, and improves the efficiency of sand cleaning.
E01H 8/10 - Removing undesirable matter from rails, flange grooves, or the like, e.g. removing ice from contact rails, removing mud from flange grooves
A steel pin capable of eliminating gaps, comprising a cylindrical steel pin body, supporting blocks, a tensioning pull rod (9) and limiting bolts (7), wherein pressing devices are arranged at two ends of the steel pin body; adjusting nuts (11) are arranged at the two ends of the tensioning pull rod (9); and the limiting bolts (7) are correspondingly arranged at the outer sides of end parts of a left supporting block (41) and a right supporting block (42) respectively. Once the limiting bolts (7) are connected to threaded holes (6), the vertical distance between top ends thereof and the axis of the tensioning pull rod (9) is greater than the radius of a pin hole (15) at the position of connection. The steel pin may be prevented from shifting and falling out due to vibrations when the structure bears a dynamic load, and when the limiting bolts (7) are in contact with the steel pin body, gaps between the steel pin body and the pin hole (15) may be completely eliminated; and gaskets (12) may prevent the adjusting nuts (11) from loosening. Meanwhile, the left supporting block (41) and the right supporting block (42) are prevented from being damaged during the tensioning process. The present steel pin is simple in structure, convenient to mount and reliable in performance.
F16B 13/10 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate gripping parts moved into their final position in relation to the body of the device by a separate operation
24.
NEGATIVE RIGIDITY SHOCK REDUCTION AND ISOLATION DEVICE FOR CONTINUOUS BEAM
The present invention relates to a negative rigidity shock reduction and isolation device for a continuous beam, comprising a trigger device, a sliding device, a buffer device, a fixing device, a positive rigidity spring group and a negative rigidity spring group. The top of the trigger device is fixedly connected to a lower wing plate of a main beam of the continuous beam, and the buffer device is fixedly mounted in the middle of the fixing device. The inner side of the sliding device is connected to the buffer device by means of the negative rigidity spring group, the two sides of the sliding device are connected to the fixing device by means of the positive rigidity spring group, and the fixing device is fixed to the top of a movable pier. The present invention has simple principles and is economical and reliable, not only allowing the movable pier and a fixed pier to cooperatively bear horizontal seismic load, but also solve the problem of the overall seismic response of a continuous beam bridge being greatly increased since the overall lateral displacement resistance rigidity of the continuous beam bridge is increased due to the intervention of an existing beam pier locking device. The present invention can be used to newly build continuous beam anti-shock designs and reinforce the anti-shock of existing continuous beam bridges, thus facilitating widespread application.
Disclosed is a device for adjusting the heat transfer capacity of a roadbed in a cold region, the device comprising a compressor (3) in communication with an electromagnetic four-way valve (4); a first pipe body with a protruding end A (603) and a protruding end B (604); and a second pipe body with a protruding end C (704) and a protruding end D (705), wherein the first pipe body and the second pipe body are respectively embedded in a maximum freezing depth layer (1) and a stabilized layer (2), the protruding end A (603) and the protruding end C (704) are respectively in communication with the electromagnetic four-way valve (4), and the protruding end B (604) and the protruding end D (705) are respectively in communication with a refrigerant expansion unit (5). According to a control method for the device, a controller (9) is connected to the compressor (3), the electromagnetic four-way valve (4) and a power source (12), and a first temperature sensor (10) and a second temperature sensor (11), which are connected to the controller (9), are respectively arranged in the maximum freezing depth layer (1) and the stabilized layer (2).
E01C 3/06 - Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
F24T 10/10 - Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
F25B 13/00 - Compression machines, plants or systems, with reversible cycle
F25B 41/06 - Flow restrictors, e.g. capillary tubes; Disposition thereof
F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
26.
DEVICE FOR MEASURING THREE-DIMENSIONAL INFORMATION OF UNDERGROUND SPACE AND DETECTION METHOD THEREFOR
A device for measuring three-dimensional information of an underground space and a detection method therefor, the measuring device comprising a sensor system, a power system, a housing protection system and a conduction system; the housing protection system comprises a constituent part of a sealed upper portion metal housing (3-1) and lower portion metal housing (3-9); the power system comprises a motor (2-1), a signal transmitter (2-2), a magnetometer (2-3), a gyroscope (2-4) and a circuit board (2-5); the sensor system comprises an ultrasonic sensor (1-1), a temperature sensor (1-2) and a video sensor (1-3); and the conduction system comprises a metal contact pin (4-1), a gear (4-3) and an upper end cap (4-4) wherein an upper portion is connected to a lifting cable, the metal contact pin (4-1) being provided at a top end of the upper portion metal housing (3-1). The measuring device may monitor the three-dimensional shape of an underground cavern at high temperatures and under high pressure, the acquired cavity shape information being significant to the evaluation of the stability of an underground structure. The detection method for the measuring device is simple to operate, and may effectively detect three-dimensional space information of an underground cavern at high temperatures and under high pressure.
A test device including a closeable cavity and a water flow groove with a water transmission channel existing between the water flow groove and the internal part of the cavity. The water flow groove includes a water inlet and a water outlet with the depth of the water inlet being greater than the depth of the water outlet. Simultaneously, side lead-in pipe of drain pipe and elbow pipe on side wall of water inlet pipe are consistent with height of top surface of the ceramic plate, making hydraulic pressure of tested soil sample being zero during dehydrating and soaking process capable of ensuring accuracy of test result. A necking design is applied to reduce water evaporation in the drainage pipe and lower the test errors. Side lead-in pipe is connected with drainage pipe for smoothly draining water and also can prevent air reversely flowing and entering into the base.
A detection device includes an enclosable chamber (200), a fluid groove (4) disposed below the chamber (200) and water conveying channels (8) between the fluid groove (4) and the inside of the chamber (200). The fluid groove (4) comprises an inlet port (41) and an outlet port (42). The depth of the inlet port (41) is greater than that of the outlet port (42). The height of a side introduction conduit of a drainage pipe (7) and the height of a side upward bent conduit (101) of an inlet pipe (1) are the same as the height of the top surface of a ceramic plate, so that the hydraulic gradient of the tested soil sample is nil during the dehydration and wetting process. Thus the accuracy of the measurement can be ensured. The opening of the drainage pipe (7) is designed to be a restricting opening (71) capable of reducing water evaporation from the drainage pipe (7), so that the measurement error can be reduced. The side introduction conduit is connected angularly to the drain pipe (7), and therefore water is smoothly discharged and air is prevented from flowing back into the base. The detection device for unsaturated soil can ensure the accuracy and reliability of the measurement and also avoid troublesome repetitious flushing for discharging bubbles.
patents
