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A bottomless steel casing cast-in-place concrete diversion cofferdam and its construction method

A construction method and concrete pouring technology, which is applied in water conservancy projects, water conservancy engineering equipment, infrastructure engineering, etc., can solve the problems of easy collapse and difficult construction of earth-rock cofferdams, etc., to enhance the ability to resist water impact and stabilize the cofferdam structure , High construction efficiency

Active Publication Date: 2018-10-16
CCCC SECOND HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing earth-rock cofferdams are difficult to build and easy to collapse in rivers with turbulent water flow mentioned in the above-mentioned background technology, and provide a bottomless steel casing cast-in-situ concrete diversion cofferdam and its construction method

Method used

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  • A bottomless steel casing cast-in-place concrete diversion cofferdam and its construction method
  • A bottomless steel casing cast-in-place concrete diversion cofferdam and its construction method
  • A bottomless steel casing cast-in-place concrete diversion cofferdam and its construction method

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0029] Such as Figure 1~3 , A bottomless steel box cast-in-place concrete diversion cofferdam. The diversion cofferdam of this embodiment is used in turbulent waters. The diversion cofferdam mainly uses the steel shell casing 5 as the main structure. The steel shell box 5 is a ring structure with open upper and lower ends. Before the steel shell box 5 is lowered onto the river bed 1, several sections of the steel shell box 5 can be welded together end to end. The steel shell box 5 is according to Design the height of the diversion cofferdam.

[0030] The steel shell box 5 is provided with an internal support structure, which includes a plurality of tie rods 7 arranged in the steel shell box 5, one end of the tie rod 7 is fixed on one side wall of the steel shell box 5, and the other end Fixed on the side wall on the opposite side, a plurality of tie...

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Abstract

The invention relates to the technical field of construction of diversion cofferdams, in particular to a cast-in-place concrete diversion cofferdam with non-bottom steel sleeve boxes and a construction method thereof. The cast-in-place concrete diversion cofferdam comprises the steel sleeve boxes with the lower ends fixed to the upper end face of a flat foundation bed of a river bed. Each steel sleeve box is of an annular structure with the upper and lower ends open, concrete is poured into each steel sleeve box to form a diversion cofferdam structure, and a vertically arranged steel pipe is pre-buried in each steel sleeve box. An anchor rod penetrates through each steel pipe and is fixedly connected with the steel pipe. The lower end of each anchor rod goes deep into the foundation bed and the river bed to anchor the corresponding steel sleeve box on the river bed, and each anchor rod is fixedly connected with the corresponding steel pipe. The non-bottom steel sleeve boxes are laid on the flat foundation bed overall, the solid concrete is poured into the steel sleeve boxes, rock is drilled via holes formed by the pre-buried anchor rods, and the anti-flushing anchor rods are arranged, so that the cast-in-place concrete structures of the non-bottom steel sleeve boxes are effectively anchored to bed rock of the river bed, and the anti-flushing capacity of the cast-in-place concrete structures of the non-bottom steel sleeve boxes is improved.

Description

Technical field [0001] The invention relates to the technical field of construction of diversion cofferdams, in particular to a bottomless steel box cast-in-place concrete diversion cofferdam and a construction method thereof. Background technique [0002] The diversion structure is an important part of a water conservancy project, and its structure affects the construction of the entire water conservancy project. Moreover, in recent years, with the vigorous development of inland water transport operations, a large number of domestic water conservancy projects built in the 1950s and 1960s need to be modified and protected. How to build suitable diversion cofferdams to maintain and reform existing water conservancy projects? It is especially important. [0003] The diversion cofferdams in the prior art are generally earth-rock cofferdams, and the earth-rock diversion cofferdams are directly filled in the water to form the earth-rock diversion cofferdam. Such a construction method i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E02B1/00
CPCE02B1/00E02D19/04
Inventor 涂伟成向继华唐蔚东杨明波
Owner CCCC SECOND HARBOR ENG
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