Steel sheet pile cofferdam structure construction method
A technology of steel sheet pile cofferdam and construction method, which is applied in the direction of foundation structure engineering, construction, etc., can solve the problems of increasing the design difficulty of steel sheet pile cofferdam, the difficulty of controlling the verticality of steel sheet pile insertion, and the deviation of steel sheet pile insertion, etc. Achieve the effects of high overall rigidity, control of vertical precision, and stability
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[0026] Example 1
[0027] (1) Set the inner positioning steel pipe pile 11 and the outer positioning steel pipe pile 10 inside and outside the steel sheet pile cofferdam, and install and fix the upper plane positioning structure 12 on the inner wall of the upper part of the steel pipe pile on the outside;
[0028] (2) Install the cantilever beam connected with the lower precast concrete support integral system through the boom to the top of the steel protective tube, so that the bottom of the lower precast concrete support integral system reaches the preset position of the corbel on the steel protective tube. The overall system of concrete support is formed by welding the well-shaped beam type lower precast concrete inner support 3 and the lower wall purlin 2-2 through the embedded parts 7;
[0029] (3) Install the upper wall purlin 2-1 on the inner positioning steel pipe pile 11, insert the steel sheet pile 1 between the upper wall purlin and the upper plane positioning structure, a...
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