Foundation pit supporting and protecting structure

Abstract

The invention provides a foundation pit supporting and protecting structure. The foundation pit supporting and protecting structure is suitable for being set around the periphery of a foundation pit,and comprises reinforced composite pile bodies, lapping piles, and supporting structures. The reinforced composite pile bodies are suitable for being buried in the soil, and comprise rigid core pilesand semi-rigid pile castings covering the periphery of the pile castings. The lapping piles are rigid or semi-rigid pipes. The lapping piles are adjacent to the reinforced composite pile bodies and arranged in a periodic linear array mode and in a ring shape. The supporting structures are fixedly connected with the reinforced composite pile bodies. At least part of the supporting structures are suitable for being arranged above the soil layer and supporting the structure in the foundation pit. By arranging the reinforced composite piles, the complementary enhancement of the rigid piles and thesemi-rigid piles is formed, which not only guarantees the strength of the pile bodies, but also improves the binding force between the pile bodies and the surrounding soil. By arranging lapping piles, the shear capacity of the surrounding soil layer is improved, the horizontal bearing capacity of the reinforced composite piles is improved, and the ability of the supporting structures to resist the lateral force of the surrounding soil is increased. The supporting structures can be used as auxiliary supports to reduce the requirement to backfill pressure coefficient of the surrounding backfillsoil and reduce the construction difficulty.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a foundation pit support structure. Background technique [0002] The foundation pit is the earth pit excavated at the foundation design position according to the base elevation and foundation plane size. As a common construction project, it can provide a space so that the basic masonry work can be carried out according to the position specified by the design, and it plays the role of a cornerstone in the construction project. When the excavation of the foundation pit is deep or there are buildings nearby, or the soil quality is unstable and there is groundwater influence, etc., it is necessary to use the foundation pit support to prevent the outer soil layer from collapsing or water seepage. [0003] Nowadays, some buildings, such as train dumping machine room, power plant transfer station, coal water treatment station, etc., are usually divided into above-...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the above-ground structure of the internal building of the foundation pit has high requirements on the bearing capacity of the surrounding soil and increases the difficulty of construction in the prior art, thereby providing a foundation pit support structure

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