Assembly type flat-top large-span column-free underground structure

Abstract

The invention belongs to the field of underground engineering construction and relates to an assembly type flat-top large-span column-free underground structure which comprises an enclosure structure,a flat-top layer board, a first layer board and first side wall prefabricated parts. The flat-top layer board and the first layer board are arranged in the enclosure structure, first side walls are arranged on the two sides of the first layer board, the two ends of the flat-top layer board are arranged on the two first side walls on the two sides respectively, and the first side walls comprise the first side wall prefabricated parts. Each first side wall prefabricated part comprises a vertical section, a horizontal section and an inclined supporting section, the bottom of the vertical sectionis connected with the first layer board, the top of the vertical section is connected with one end of the horizontal section, and the other end of the horizontal section is connected with one end ofthe inclined supporting section, and the other end of the inclined supporting section is connected with the vertical section. The flat-top layer board is supported through the triangular-frame-shapedfirst side wall prefabricated parts, the flat-top column-free effect is achieved, the vision column-free large-space effect of the building is well achieved, the foundation pit buried depth is slightly increased, no arch foot external expansion thrust exists, and the structural stability is improved.

Description

technical field [0001] The invention belongs to the technical field of underground engineering construction, and in particular relates to an assembled flat-roofed large-span column-free underground structure. Background technique [0002] At present, the open excavation method is used to construct the underground structure with internal support foundation pit using the traditional cast-in-place reinforced concrete structure construction technology, the design process is complicated, and the workload is large; the on-site construction process requires a lot of labor of various types, and the construction environment is poor. , The construction process is complicated, the construction speed is slow, and it is greatly affected by various weather and climate, so the construction quality is difficult to guarantee. At the same time, a lot of abandoned construction waste will be generated during the construction process, which not only wastes resources but also pollutes the environ...

AI Technical Summary

Problems solved by technology

[0004] With the development of prefabricated technology, some prefabricated design and construction technology schemes have emerged for underground structures, some of which are only suitable for low groundwater and grading or anchoring Cable (rod) open-cut foundation pits are not suitable for foundation pits with internal support and rich groundwater; some only partially use prefabricated structures, the degree of assembly is not high, and the assembly efficiency is low

The existing schemes are generally aimed at conventional underground structures with columns, and the view of the underground space is not wide; while the existing schemes for the underground structures without columns are mostly vaulted roofs, with relatively large external thrust, a large increase in the buried depth of the foundation pit, and high cost, resulting in the outside of the foundation pit. It is strictly forbidden to unload the soil, and there are high requirements for the surrounding environment after operation

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