Opposite supporting embedded part construction method for underground continuous wall
A technology of underground diaphragm wall and construction method, which is applied in the direction of excavation, sheet pile wall, foundation structure engineering, etc., and can solve the problems of long steel support members, long construction period, and difficult implementation
Active Publication Date: 2013-12-18
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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Problems solved by technology
To achieve this, it is necessary to use measurement to guide the installation of steel support components in place. However, due to the long, large and heavy steel support components, it is not easy to install them accurately by crane, and it takes a certain amount of time for on-site construction, that is, it is difficult to implement on the construction site. Large, long construction period, difficult to accurately install in place
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[0012] The present invention is further described as follows in conjunction with accompanying drawing and engineering example.
[0013] The supporting embedded parts include two steel supporting flanges 1 arranged in parallel, and an elevation positioning block 2 is respectively provided on the outer bottom of the two steel supporting flanges 1, and a The outer two ends of the casing 6 and the two steel support flanges 1 are provided with a positioning block 4 for the embedded part of the brace. Several connecting steel bars 5 are also arranged between the two steel supporting flanges 1 (welded when the supporting embedded parts are made). The positioning steel plate 3 is installed on the elevation positioning block 2. The end of the steel support 7 rests on the positioning steel plate 3, and the steel support 7 is located between the two opposite brace embedded part positioning blocks 4 on the same side, the end of the steel support is provided with a screw hole, and the scr...
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The invention discloses an opposite supporting embedded part construction method for an underground continuous wall. The construction method is characterized by comprising a first step of manufacturing opposite supporting embedded parts in advance; a second step of simultaneously enabling the opposite supporting embedded parts to be installed in a steel reinforcement cage to be a whole in the underground continuous wall steel reinforcement cage manufacturing process; a third step of lifting the steel reinforcement cage and placing the steel reinforcement cage in an underground continuous wall deep groove formed in advance, and pouring concrete in the deep groove; a fourth step of performing foundation pit soil mass excavation construction; a fifth step of timely removing surface layer plain concrete when excavation is performed to the opposite supporting embedded parts, enabling locating steel plates to be installed and welded, and installing steel supports. The opposite supporting embedded parts are utilized, the construction method has convenience in installation, measurement is not needed, support shaft force can be accurately centered, and the goal of safety, convenience in construction and construction period saving is achieved.
Description
technical field [0001] The invention relates to the field of underground construction, in particular to a construction method for braced embedded parts of an underground diaphragm wall that shares the same underground diaphragm wall between two adjacent foundation pits. Background technique [0002] The middle of two adjacent foundation pits share the same underground diaphragm wall as the support structure, and realize the simultaneous excavation construction. The supporting axial force of the foundation pit on both sides of the wall is accurately aligned, so that the ground wall only bears the pressure of the supporting members. To achieve this, it is necessary to use measurement to guide the installation of steel support components in place. However, due to the long, large and heavy steel support components, it is not easy to install them accurately by crane, and it takes a certain amount of time for on-site construction, that is, it is difficult to implement on the const...
Claims
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IPC IPC(8): E02D5/18E02D17/04
Inventor 薛勇李文斌
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP