Recyclable assembly type PRC supporting structure and supporting process

Abstract

The invention provides a recyclable assembly type PRC supporting structure which comprises a PRC pile body and further comprises a prefabricated top beam, the prefabricated top beam is formed by assembling and connecting a plurality of concrete prefabricated blocks, reserved pile holes are formed in the concrete prefabricated blocks in the height direction, pre-embedded steel plates are embedded in the inner rings of the reserved pile holes, beam internal threads are arranged on the inner rings of the pre-embedded steel plates, and the beam internal threads are formed in the inner rings of the pre-embedded steel plates. The prefabricated bolt comprises a bolt head end and a bolt rod body fixed to the bottom end of the bolt head end, a pile body inner hole is formed in the top end of the PRC pile body, so that the top of the PRC pile body is led in along a reserved pile hole in an assembled prefabricated top beam, the bottom of the PRC pile body is driven into a field soil layer support, then the prefabricated bolt is screwed in along the reserved pile hole, the bolt rod body extends into the pile body inner hole, and the PRC pile body is fixed to the prefabricated top beam. Stable connection of the PRC pile body and the prefabricated top beam is completed, the prefabricated bolt is screwed out during recycling, the prefabricated top beam is hoisted and disassembled, and repeated recycling of the PRC pile body, the prefabricated top beam and the prefabricated bolt is achieved.

Description

technical field [0001] The invention relates to the technical field of foundation pit support, in particular to a recyclable assembled PRC support structure and a support process. Background technique [0002] With the increasing scale of underground space development and the increasingly complex surrounding environment, the requirements for deep foundation pit support technology are getting higher and higher, and the foundation pit is constantly developing in the direction of "deep, large and near". In order to ensure the smooth construction of the foundation pit project, the safety of the main underground structure and the surrounding environment of the foundation pit in a complex environment, and to practice the development concept of green environmental protection construction and building an ecologically civilized society, support for the side walls of the foundation pit, surrounding soil, and surrounding environment The requirements for blocking, reinforcement and prot...

AI Technical Summary

Problems solved by technology

The advantages of concrete structural support are: the construction quality is guaranteed, not limited by the construction period, the disadvantage is that it is not recyclable, the cost is relatively high, and the cost performance is poor for short-term temporary projects, especially for PRC piles, although it solves the problem of convenient construction, However, because it is not recyclable, there are also economic problems; the advantages of steel structure support are quick construction, convenient disassembly and assembly, and recyclability. With higher requirements, when there is a hard layer in the soil layer, it will be difficult to insert and insert, and the requirements for equipment are higher, and the concrete pile has better applicability to the soil layer

[0006] In this regard, prefabricated steel structure supports (such as fish-belly beam support systems) are also proposed at present. This system has good applicability in foundation pits with large spans and large spaces, but this type of system still has high technical requirements for installation. Common issues such as expensive long-term leases still hinder its widespread adoption

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