Foundation pit soldier pile supporting system and construction method thereof

Abstract

The invention relates to a foundation pit soldier pile supporting system and a construction method thereof. The foundation pit soldier pile supporting system comprises a diagonal brace pile foundationcushion cap, a soldier pile structure and a plurality of groups of diagonal braces supported between the diagonal brace pile foundation cushion cap and the soldier pile structure; the diagonal bracepile foundation cushion cap comprises a supporting platform and supporting piles; the supporting platform is positioned under a structure wall body; the supporting piles are supported at the bottom ofthe supporting platform; the soldier pile structure comprises a soldier pile, a crown beam and a breast beam; the crown beam is arranged on the top surface of the soldier pile; the breast beam is arranged in the middle of the soldier pile and faces one side of a foundation pit; and each group of the diagonal braces comprises a steel diagonal brace I arranged between the crown beam and the supporting platform. Under the conditions that an underground structure is heavy in construction task, the construction period is tight, and the surrounding environment is complicated, the supporting safetyrequired in design is very high, the supporting requirements of most of foundation pits can be met by applying steel diagonal braces with the pile caps as foundations onto the crown beam and the breast beam of the soldier pile, and in addition, diagonal bracing replaces horizontal bracing, so that the problem that the construction of the foundation pit is affected by cumbersome processes such as horizontal bracing removing is solved, and the construction period is saved.

Description

technical field [0001] The invention belongs to the field of foundation pit support, in particular to a foundation pit row pile support system and a construction method thereof. Background technique [0002] With the growth of the city, it has become inevitable to develop large-scale underground space in combination with urban construction and renovation. These deep and large foundation pits are often close to buildings, traffic arteries, subway tunnels and various underground pipelines. The construction site is tight and the construction conditions are complex. Due to the tight construction period, all these make the design and construction of foundation pit engineering more and more difficult. At present, the main forms of foundation pit support include natural slope, soil nail wall, single (double) row of piles, underground diaphragm wall, etc., but due to Due to the complexity around the foundation pit, the traditional or single support form can no longer fully meet the ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a foundation pit row pile support system and its construction method, to solve the technical problem that the single support method in the prior art has no way to meet the needs of foundation pit support; and to solve the serious problem of traditional horizontal support forms. Problems that affect the construction period and are difficult to construct

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