Wedge-shaped concrete cushion block for long-span steel structure bridge incremental launching construction

A concrete and concrete reinforcement technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of large waste, insufficient bearing capacity, accidents, etc., and achieve the effects of reduced engineering cost, simple production, and flexible and convenient use.

Inactive Publication Date: 2014-01-08

宋功业

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AI-Extracted Technical Summary

Problems solved by technology

Insufficient carrying capacity in any aspect will lead to accidents

Between the column and the equipment, and between the equipment and the bridge body, spacers are required to adjust the height. The ex...

Abstract

The invention relates to a wedge-shaped concrete cushion block for long-span steel structure bridge incremental launching construction. The wedge-shaped concrete cushion block comprises a steel frame, a double-layer steel bar mesh sheet, a concrete strengthening layer and a flying ring. The wedge-shaped concrete cushion block is provided with the wedge-shaped steel frame, the interior of the steel frame is paved with the double-layer steel bar mesh sheet, and the double-layer steel bar mesh sheet and the steel frame are fixed in a welding mode. The smooth concrete strengthening layer is poured into the steel frame, and the thickness of the concrete strengthening layer is equal to the depth of the steel frame. One side face of the steel frame is fixedly connected with the flying ring, the wedge-shaped concrete cushion block is easy to manufacture, and different cushion blocks with different thicknesses can be manufactured so that the construction requirement can be met; the using process is flexible and convenient, and the rectangular concrete cushion block can be used repeatedly so that the construction cost can be greatly reduced.

Application Domain

Bridge erection/assembly

Technology Topic

Steel barWedge shape +4

Image

Examples

Experimental program(1)

Example Embodiment

[0016] In the attached drawing, a large-span steel structure bridge jacking construction concrete wedge block includes a steel frame 1, a double-layer steel mesh 2, a concrete reinforcement layer 3 and a lifting ring 4; the concrete wedge block has a wedge-shaped steel Frame 1, the steel frame 1 is laid with a double-layer steel bar mesh 2 which is welded and fixed to the steel frame 1; the steel frame 1 is also poured with a flat concrete reinforcement layer 3, so The thickness of the concrete reinforcement layer 3 is equal to the depth of the steel frame 1; a lifting ring 4 is fixedly connected to one side of the steel frame 1.

[0017] The size of the concrete wedge block is 700-900 mm in length, 500-700 mm in width, the minimum thickness of the wedge block is 30 mm, and the maximum thickness is 80-300 mm, and the cushion block is smooth and flat.

[0018] The steel frame 1 is welded by steel plates with a thickness of 1-2 mm, with a surrounding frame and a bottom plate, and its bottom surface is flat and has sufficient strength and rigidity.

[0019] The steel frame 1 includes a frame board I1-1 with a lower height and a frame board II1-2 with a higher height which are parallel to each other and have the same length. The two ends of the frame board I1-1 and the frame board II1-2 are respectively connected There is a right-angle waist trapezoidal frame board III1-3; the short side of the right-angled trapezoidal frame board III1-3 is the same height as the frame board I1-1, and the long side is the same height as the frame board II1-2; the steel frame 1 is also provided There is a bottom plate 1-4.

[0020] The double-layer steel mesh 2 is formed by crisscross welding of grade III steel bars with a diameter of 10 mm, the steel bar spacing is 100 mm, and the steel bar protective layer thickness is 15 mm.

[0021] The concrete reinforcement layer 3 is made of ordinary C40 fine stone concrete, and no cracks are allowed.

[0022] The lifting ring 4 is formed by bending steel bars with a diameter of 20-25 mm, and the steel bars are anchored deep into the concrete cushion block for hoisting and installation of the cushion block.

[0023] When in use, the large-span steel structure bridge jacking construction concrete wedge block is made in the factory or on-site, and installed on the top of the column and equipment that has passed the experience. The jacking equipment can be installed after the acceptance is passed. construction.

PUM

Property	Measurement	Unit
Thickness	30.0 ~ 900.0	mm
Thickness	80.0 ~ 300.0	mm
Thickness	1.0 ~ 2.0	mm

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