A cofferdam structure for bridge pier construction

Abstract

The utility model discloses a cofferdam structure for bridge pier construction includes two head sections, a plurality of intermediate sections, water stop, erosion prevention board, the head section is U type structure, the intermediate section is a character type structure, the head section or the head section same a plurality of intermediate sections are detachably connected through bolt, and the cofferdam structure is enclosed, is provided with water stop in the junction, is provided with erosion prevention board in the lower part of head section, the utility model discloses the prefabricated cofferdam structure can conveniently realize construction site hoisting installation, and through detachable structure can conveniently realize the dismantling of division, has the advantages such as short construction period, low cost, on the specific structure, through the setting of water stop can effectively protect the connecting bolt, through the setting of pointed convex part, water stop surface material etc. Structure can realize the stability and water tightness of cofferdam installation, through the setting of erosion prevention board can reduce the erosion of water flow to cofferdam foundation, reduce the appearance probability of seepage, inclination etc. Accident.

Claims

1. A cofferdam structure for bridge pier construction, characterized in that, It includes two head sections, several intermediate sections, a waterstop plate, and an anti-corrosion plate; the head sections are U-shaped, and the intermediate sections are straight; the head sections or the head sections and several intermediate sections are detachably connected by bolts to form a cofferdam structure; a waterstop plate is provided at the connection; and an anti-corrosion plate is provided at the lower part of the head sections.

2. The cofferdam structure for pier construction according to claim 1, wherein The cofferdam structure also includes an inner support frame; it is installed in the head section and the middle section, and a support plate is installed in the head section and the middle section.

3. The cofferdam structure for pier construction according to claim 1, wherein Cavities are set inside the head and middle sections.

4. The cofferdam structure for bridge pier construction according to claim 1, characterized in that, The head and middle segments have pointed protrusions at their bottoms.

5. The cofferdam structure for pier construction according to claim 1, wherein A horizontally arranged anti-corrosion plate is installed on the lower outer side of the head section. The anti-corrosion plate is installed on the outer wall of the lower part of the head section by bolts or welding. The anti-corrosion mesh is a mesh plate obtained by welding metal plates.

6. The cofferdam structure for pier construction according to claim 4, wherein Several vertically arranged anti-corrosion plates are provided on the lower outer side of the head section and the middle section. The bottom of the anti-corrosion plates extends to the bottom of the pointed protrusion, and the top is flush with the top of the pointed protrusion.

7. The cofferdam structure for pier construction according to claim 1, wherein A connecting flange face is provided on the end face of the head section and the two middle end faces, and several through holes are provided on the connecting flange face; an L-shaped waterstop fixing plate is provided on the outer wall inside the flange face, the waterstop plate has a U-shaped cross section and an outward protrusion at the end, the protrusion is inserted between the two waterstop fixing plates.

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