Shallow-to-deep foundation pit supporting structure and method

Abstract

The invention discloses a shallow-to-deep foundation pit supporting structure and method. The shallow-to-deep foundation pit supporting structure comprises a reinforced concrete internal supporting structure used for a deep foundation pit constructed at the later stage, a reinforced concrete bracket support and an H-shaped steel framework, wherein one end of the reinforced concrete internal supporting structure and one end of the reinforced concrete bracket support are both close to a shared shallow-to-deep foundation pit building outer wall, the H-shaped steel framework penetrates through the shared shallow-to-deep foundation pit building outer wall, one end of the H-shaped steel framework is connected to the interior of the reinforced concrete internal supporting structure, and the other end of the H-shaped steel framework is connected to the interior of the reinforced concrete bracket support; the other end of the reinforced concrete bracket support and a shallow foundation base plate are connected and are constructed at the same time; a waterstop steel plate is welded to the outer side of the H-shaped steel framework penetrating through the shared building outer wall. According to the shallow-to-deep foundation pit supporting structure, the whole construction time is short, a construction site is spacious, and materials can be transported and piled conveniently; meanwhile, the requirements for investing capitals in batches and putting commercial residential buildings in to the market by stages of construction units can be met.

Description

technical field [0001] The invention relates to a support structure for foundation pits which are shallow first and then deep and a realization method thereof, which belongs to the technical field of geotechnical engineering. Background technique [0002] In recent years, my country's building construction has become more and more prosperous, underground projects have risen rapidly, and the construction area of ​​basements has become larger and larger. Due to the difference in planning and use performance, large underground buildings are not developed at one time, and the number of basement floors is not all the same. Conventional foundation pit design and construction are carried out in accordance with the construction process of "deep first and then shallow". If the conventional method of "deep first and then shallow" is adopted for large-scale deep foundation pit projects, the entire project period will be long, and the construction site is small, and the building materia...

AI Technical Summary

Problems solved by technology

If the strength and construction technology of the foundation pit support structure built first do not conform to the actual situation of the deep foundation pit excavation and support structure later, it will easily lead to accidents and losses in some foundation pit projects

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