Abstract

The present invention relates to an anti-bending strut for use in the construction of a temporary earth retaining structure. The anti-bending strut for use in the construction of a temporary earth retaining structure according to the present invention comprises: a strut disposed to cross between earth retaining walls, which face each other, and connected to wales of the earth retaining walls; diagonal beams installed such that ends on one side are connected to the wales and ends on the other side spread out to either side of the lengthwise ends of the strut; a tensioning member installed on the outer side of the strut; and a tensioning wire, which is installed in the lengthwise direction of the strut and applies tension to the tensioning member so as to offset the eccentricity of the strut. According to the present invention as described above, the bending of the strut can be prevented by providing tension to a point where the bending of the strut is predicted or occurs, and thus safety in the construction of the temporary earth retaining structure can advantageously be secured.

IPC Classes  ?

• E02D 17/04 - Bordering or stiffening the sides of foundation pits
• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations

Abstract

The present invention relates to a strut connection structure for constructing a temporary earth retaining structure. The strut connection structure for constructing a temporary earth retaining structure according to the present invention comprises: a strut disposed to cross between earth retaining walls, which face each other, and connected to wales of the earth retaining walls; diagonal beams installed such that ends on one side are connected to the wales and ends on the other side spread out to either side of the lengthwise ends of the strut; and prestressed (PS) steel wires for connecting the diagonal beams. According to the present invention as described above, unnecessary horizontal loads can advantageously be prevented from being applied to the wales by tensioning connecting members by means of the PS steel wires for applying loads contrary to the horizontal loads applied to the wales so as to offset the horizontal loads.

IPC Classes  ?

• E02D 17/04 - Bordering or stiffening the sides of foundation pits
• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations

Abstract

The present invention relates to a structure for coupling an earth retaining wall with wales, the structure comprising an earth retaining wall constructed on an excavated surface of the ground, wales installed widthwise on the outer side of the earth retaining wall so as to support the earth retaining wall, and coupling members for fixing the wales, and allowing the wales to be simply coupled to a concrete part formed on the outer surface of the earth retaining wall, thereby simplifying the construction process, shortening the construction period, and reducing the construction costs.

IPC Classes  ?

• E02D 17/04 - Bordering or stiffening the sides of foundation pits
• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations

Abstract

The present invention relates to a cap beam structure comprising: cap beams, which are formed on the upper sides of earth retaining walls and connect and bind multiple support columns, the earth retaining walls supporting multiple excavated surfaces of an excavated part of the ground, being inserted upright in the ground, and comprising the multiple support columns; anchorages installed with at least a part thereof inserted in the cap beams; and struts for supporting the earth retaining walls supporting the respective excavated surfaces thereof, the struts being respectively connected to and supported by the anchorages inserted in the cap beams formed on the earth retaining walls supporting the respective excavated surfaces thereof, thereby supporting the earth retaining walls by anchoring the struts to the outer surfaces of the cap beams without installing separate wales, and thus simplifying the construction process, shortening the construction time, and significantly reducing the construction costs.

IPC Classes  ?

• E02D 17/04 - Bordering or stiffening the sides of foundation pits
• E02D 17/08 - Bordering or stiffening the sides of ditches or narrow shafts for foundations

Abstract

An upper structure for a bridge includes a coping placed on the top of a pier, and girders held by the coping, wherein the coping has girder holding grooves. The girders are installed continuously without using bridge bearings. The coping and the girders behave in an integrated state. The girders are held by being fitted into the grooves, so the coping is not excessively exposed to the outside. The girders and the coping are dry joined together in a prestressed state using prestressed steel strands. Further, the girders and the coping can be integrated with each other without being processed by site work.

IPC Classes  ?

• E01D 19/02 - PiersAbutments

Abstract

An upper structure for a bridge includes a coping placed on the top end of a pier, and a girder held by the coping, wherein a side surface of the coping and an end surface of the girder are configured as inclined surfaces (or vertical surfaces), wherein a shear key protrudes on one of the inclined surfaces (or vertical surfaces), and a shear key slot is formed in another one of the inclined surfaces (or vertical surfaces) so as to be engaged with the shear key. The present disclosure can reduce the construction cost, can realize improved structural efficiency of the bridge upper structure, can realize an easy installation of the girders, can easily combine the girders with the coping without plastering or fixing with mortar by site work, and can efficiently resist to a shear stress that may be generated in the bridge.

IPC Classes  ?

• E01D 19/02 - PiersAbutments
• E01D 19/00 - Details of bridges
• E01D 2/02 - Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
• E01D 21/00 - Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The present invention relates to an apparatus for removing sediment from a water intake path or a water discharge path of a plant, so as to prevent sedimentation of floating or foreign substances in cooling water, which is used in a cooling system of the plant, on the bottom of the water intake path or the water discharge path for supplying the cooling water to the plant.

IPC Classes  ?

• E02B 5/08 - Details, e.g. gates, screens
• E02B 9/04 - Free-flow canals or flumesIntakes

Abstract

The present invention relates to a superstructure comprising: a coping (120, 220) installed on the upper end of a bridge pier; and a girder (130, 230) mounted to the coping, wherein the side surfaces of the coping and the side surfaces of the end portion of the girder are formed into inclined (or vertical) surfaces and come into close contact with one another; a shear key protrudes from one inclined (or vertical) surface of the pair of inclined (or vertical) surfaces; and a shear key groove, into which the shear key can be inserted, is formed on the other of the pair of inclined (or vertical) surface. Due to this configuration, construction costs can be reduced, structural efficiency exists, mounting of girders is facilitated, girders may be coupled to copings without the need for on-site pouring of mortar, and the resistance to shear, which may occur during the operation of a bridge, is increased.

IPC Classes  ?

• E01D 19/02 - PiersAbutments
• E01D 2/00 - Bridges characterised by the cross-section of their bearing spanning structure

Abstract

The present invention relates to an upper structure for a bridge, the upper structure comprising: a coping (120) installed on the upper end of a bridge pier; and girders (130) mounted to the coping, wherein the coping has slots (122a) for insertion of the girders (130), and the girders (130) pass through the slots (122a) and are mounted to the coping (120) via dry joints. According to this configuration, construction costs can be reduced since girders can be applied in succession without the need for separate bridge bearings, structural efficiency is provided since the girders and coping behave integrally, structural elegance is provided since slots are formed in the coping and the girders are mounted by being inserted into the slots and thus there is no excessive exposure of the upper portion of the coping. In addition, dry joints are created with stress between the girders and coping by transverse (the longitudinal direction of the coping) steel cables, thereby integrating the girders and coping, and thus the rigidity of the sections of bridge piers (support points) is increased and the resistance to the negative moment is consequently increased, and since the girders and coping are integrated without separate on-site work, structural efficiency is provided while the construction period is reduced.

IPC Classes  ?

• E01D 19/02 - PiersAbutments
• E01D 2/00 - Bridges characterised by the cross-section of their bearing spanning structure

Abstract

The present invention relates to a fit-together type of precast concrete lining and bridging structural body in which main girders are integrated with deck plates. Precast concrete deck members connected in longitudinal and transverse directions are pre-stressed by pre-stressed members, thereby making it possible to increase load carrying capacity or rigidity of a structure to stably use the structure for a long time. Further, it is possible to support the load applied from the top of a deck structure with a small thickness, and to make the deck structure light. Due to a knockdown type (fit-together type), installation and dismantlement are easy, and reuse is possible, and thus it is possible to provide convenient construction and low production costs.

IPC Classes  ?

• E01D 2/04 - Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type

Abstract

The present invention relates to a fit-together type of precast concrete lining and bridging structural body in which a mould member and a lining board have been integrated. A tensioning member (2) is used to introduce prestressing into precast concrete lining members (1) which are connected in the longitudinal and lateral directions, such that the load bearing capacity or rigidity of the structural body is increased and it can be used stably over an extended period of time. Further, the present invention allows the lightening of weight and allows the supporting of loads applied to the upper part of a lining structural body with a small thickness, and it allows production cost savings and convenience of working since installation and dismantling are easy and reuse is possible because it has a fitted-together configuration.

IPC Classes  ?

• E01C 9/08 - Temporary pavings

Abstract

The invention relates to an improved precast temporary facility structure having a satisfactory rigidity that is realized by precast-prefabricating, in a factory, a support structure with concrete material to thereby allow a long span temporary wall to be supported on the support structure, and a construction method for the same.  The temporary facility structure comprises a support structure including: segment members in standard form available at the factory, the segment member being disposed about the inner surface of the temporary facility wall by the medium of fixing means and being filled with concrete therein; and a connector in contact with the end of the segment members and thus integrated therewith by the medium of coupling means so as to connect other segment members.  Accordingly, a sufficient supporting force can be exerted upon the long span temporary wall of great overall length, and the precast method results in a decrease in the time spent on concrete setting which in turn shortens the construction period.

IPC Classes  ?

• E02D 29/045 - Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location lineMethods of making them