Pile foundation underpinning structure traversing group pile foundation and construction method thereof
A pile foundation underpinning and pile group foundation technology, which is applied in foundation structure engineering, foundation structure repair, construction, etc., can solve the problems of poor durability of the planted reinforcement structure, difficult to guarantee the quality of the planted reinforcement, and difficult to guarantee the safety, etc., to achieve Enhanced construction quality and durability
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[0026] Such as Figure 1-5 As shown, the present invention is a pile foundation underpinning structure passing through pile group foundations and a construction method thereof. The structure includes an existing cap structure 1 and existing piles 6. Cap structure 1, with multiple existing piles 6, the existing cap structure 1 is externally wrapped with an underpinning cap, the underpinning cap includes primary pouring cap 2 and secondary pouring cap 4, the primary pouring cap 2 is located above the secondary pouring cap 4, and the primary pouring cap 2 is wrapped around the outside of the existing cap structure 1, and a number of underpinning piles 7 are symmetrically and vertically arranged on both sides of the bottom of the primary pouring cap 2.
[0027] Further, each underpinning pile 7 is provided with a jack 3 on the top, and the top of the jack 3 is supported and installed on the bottom of the primary pouring cap 2 .
[0028] Further, the secondary pouring cap 4 is arr...
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