Steel-concrete combined foundation pit supporting structure

Abstract

The invention discloses a steel-concrete combined foundation pit supporting structure. The steel-concrete combined foundation pit supporting structure comprises a steel sheet pile, a ring beam, a secondary beam, a connecting steel bar and a bracket support. The steel sheet pile forms a waterproof structure, one end of the connecting steel bar is fixed to the steel sheet pile, the other end of theconnecting steel bar penetrates through the ring beam and extends into the secondary beam, and the bracket support is arranged below the secondary beam. According to the structural design, the steel-concrete combined foundation pit supporting structure is formed by effectively combining the steel sheet pile, the ring beam, the secondary beam, the connecting steel bar and the bracket support, the defects that a conventional foundation pit supporting construction speed is low and the part recovery rate is low are overcome, the foundation pit supporting construction efficiency is improved, and green recycling of parts is realized to a greater extent.

Description

technical field [0001] The invention relates to the technical field of foundation pit engineering, in particular to a steel-concrete combined foundation pit supporting structure. Background technique [0002] In the process of foundation pit construction, the support structure is an important factor to ensure the safe excavation of the foundation pit. Under normal circumstances, steel sheet piles, underground diaphragm walls, SMW piles, etc. can be used to form a support structure to ensure the safety of the foundation pit. [0003] However, steel sheet piles are difficult to apply to deep foundation pits due to their poor stability. The underground diaphragm wall has a high consumption of materials due to the large volume of the concrete structure, while the construction process of SMW piles is complicated and expensive, and special equipment is required for on-site construction. With the development of social economy and the introduction of green concepts, environmental f...

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Problems solved by technology

[0006] Another example is the Chinese patent document CN 109403350A, which discloses "Foundation Pit Support Structure and Foundation Pit Support Method". Through the support structure combined with support piles, prestressed anchor cables and drainage wells, an ultra-deep foundation with a higher groundwater level is realized. Pit support achieves the purpose of not occupying the internal space of the foundation pit and no need to dismantle it, but it still does not involve the foundation pit support structure of steel-concrete combination

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