Supporting structure for foundation pit for building

Abstract

The invention discloses a supporting structure for a foundation pit for a building. According to the technical scheme, the supporting structure comprises a soil nailing wall at the periphery of the foundation pit, and comprises a plurality of supporting folding plates which are mutually connected; the supporting folding plates comprise a plurality of central plate bodies and connecting plate bodies, wherein the central plate bodies are the same in shape and are mutually connected, and the connecting plates are connected to the two sides in the horizontal direction of all the central plate bodies and are the same in length; rotating shafts are connected to the long edges of the two sides of each central plate body in a rotating mode; all the central plate bodies and the connecting plate bodies are mutually connected in a rotating mode through the rotating shafts; a plurality of connecting holes are formed in each connecting plate body; the connecting plate bodies of every two adjacent supporting folding plates are attached to one another; prestress anchor rods are connected into the positions, at the connecting holes, of the connecting plate bodies in an inserted mode; vertical plates are fixedly arranged on all non-adjacent rotating shafts; and when the central plate bodies are arranged perpendicular to the ground, the connecting plate bodies and the vertical plates are also arranged perpendicular to the ground. The supporting structure has the advantages that complex construction is not needed, and the supporting effect can be achieved quickly.

Description

technical field [0001] The invention relates to the field of building foundation pits, in particular to a supporting structure for building foundation pits. Background technique [0002] With more and more high-rise buildings, the depth of the foundation pit is also increasing, and the excavated underground space can be used as garages, storage, shopping malls, civil air defense projects, etc. After the excavation of the foundation pit of the building, it is necessary to make a support structure around it to prevent local or large-scale landslides. The traditional support structure is a soil-nailed wall structure, which has the advantages of low production cost and fast production, but now When the foundation pit is very deep, the one-layer soil nail wall structure can no longer guarantee to prevent partial or large-scale collapse of the foundation pit. [0003] The existing Chinese patent whose authorization notification number can be referred to is CN100580190 discloses a...

AI Technical Summary

Problems solved by technology

[0004] When adding foundation pit support structure outside the soil nail wall, it is usually necessary to cut off the exposed plastic pipe of the soil nail wall outside the wall to facilitate the installation of the subsequent support struc

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