Foundation pit and side slope envelope enclosure for prestress fabricated special-shaped pile wall

Abstract

The invention discloses a foundation pit and side slope envelope enclosure for a prestress fabricated special-shaped pile wall. The foundation pit and side slope envelope enclosure is formed by assembling standard components prefabricated through prestress high-strength reinforcing steel bars and high-strength concrete in a factorization manner on a construction site. The foundation pit and side slope envelope enclosure has reasonable stress performance, and meets requirements of soil blocking, water stopping and appearance decoration of a rock and soil foundation pit side slope and meets the requirement for using the foundation pit and side slope envelope enclosure as a permanent basement external wall structure. The appearance of the standard prefabricated components (called the standard components for short) is manufactured into T-shaped, rectangular and U-shaped sections according to stress and assembly requirements. Connectors between the standard components include the horizontal connectors and the vertical connectors. The foundation pit and side slope envelope enclosure is high in on-site assembly construction operability, high in component assembly degree, high in construction work efficiency, capable of saving engineering materials, low in project construction cost and good in project implementation effect.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a vertical enclosure structure for foundation pits and side slopes. Background technique [0002] The pile-wall enclosure structure used in foundation pit engineering or slope engineering is an important structural form of foundation pit enclosure, which has been widely used all over the world. Currently, foundation pit and slope enclosure pile walls are often used Drilling (rotary digging) grouting columns, steel cement-soil mixing walls of SMW construction method, prefabricated pile cement-soil mixing walls and cast-in-place underground diaphragm walls, etc. [0003] Cast-in-situ pile refers to the pile formed by mechanical hole forming and mud wall protection at the project site, forming pile holes in the foundation soil, placing steel cages in them, and pouring concrete on site. According to different hole-forming methods, cast-in-place piles can be divided into Th...

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Problems solved by technology

[0014] The technical problem to be solved by the present invention is to meet its reasonable force requirements by optimizing the cross-sectional shape and size of the prefabricated pile wall; it solves the difficulty of factory construction of prefabricated standard parts, the difficulty of single-piece transportation, the heavy weight of a single piece and the difficulty of hoisting Inconvenient, on-site assembly and construction period is long and other problems. According to different support requirements and force requirements, a prestressed assembled special-shaped pile wall foundation pit and slope enclosure structure is provided.

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