Double purlin concrete internal support system with deformation compensation device

Abstract

The invention discloses a double purlin concrete internal support system with a deformation compensating device, aiming to provide a system that can effectively solve the external soil pressure of the foundation pit outer protection piles and the axial shrinkage effect of the internal support beam. Under the combined action, the deformation into the foundation pit is too large, which causes a major hidden danger to the safety of the foundation pit. The double-walled purlin concrete inner support system. It includes the outer protection piles of the foundation pit, the outer purlin beams and the inner support beams braced between the outer purlin beams. Among the two ends of the inner support beams, at least one end is supported on the outer purlin beams through the deformation compensation support structure, and the deformation The compensation support structure includes the inner purlin beam located between the inner support beam and the outer purlin beam and several deformation compensation devices located between the inner purlin beam and the outer purlin beam. The hydraulic jack of the outer purlin beam and the insert type compensation deformation locking device between the inner purlin beam and the outer purlin beam.

Description

Technical field[0001]The present invention relates to a foundation pit support structure, and more particularly to a two-membered concrete inner support system with a deformable compensation device.Background technique[0002]With the continuous development of urban underground space, the depth of the basement is growing, the urban core area pipeline is intensive, and the surrounding of the deep base pit is often adjacent to the subway, housing and roads, and the surrounding environment has high deformation control requirements. In order to ensure the safety of the underground structure and the surrounding environment of the foundation pit, it is necessary to use support, reinforcement such as support, reinforcement in the side wall of the foundation pit. The current foundation pit support system typically includes a base pit peripheral pile or a foundation pit peripheral wall disposed around the edge of the base pit, located in the inside of the inside of the foundation pit pile and ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-wall purlin concrete internal support system with a deformation compensation device, which can effectively solve the problem of external earth pressure and internal support of the existing foundation pit peripheral protection piles or foundation pit peripheral retaining walls. Under the joint action of the beam axial shrinkage effect, the deformation into the foundation pit is too large, which poses a major hidden danger to the safety of the foundation pit and the safety of the pipeline outside the foundation pit

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