Compressible device of deep foundation pit horizontal inner support

Abstract

The invention discloses a compressible device of a deep foundation pit horizontal inner support. The device is arranged in a deep foundation pit horizontal inner support structure and mainly consists of steel plates (3), vertical plates (2) and a steel pipe (1), wherein two steel plates (3) are provided and connected with the horizontal inner support structure respectively, the steel pipe (1) is arranged between the steel plates (3) and fixedly connected with the steel plates (3), and the vertical plates (2) are arranged at the two ends of the steel plates (3) and fixedly connected with the steel plates (3). When the static soil pressure acting on the support structure is excessively high, the support can generate a certain amount of compression through the compressible device, partial overload can be removed through compression displacement, and then the load acting on the support structure is reduced so as to provide a certain safety guarantee to a deep foundation pit support project, guarantee the stability of the support structure and avoid sudden failure of the support structure after exceeding ultimate bearing capacity. The device is simple in design and manufacturing and convenient to mount, and can realize constant load-compression within a certain range.

Description

technical field [0001] The invention relates to a retractable device for the horizontal internal support of a deep foundation pit, in particular to a device installed on the horizontal internal support structure of a deep foundation pit. Compression, the compression displacement increases continuously within a certain range, while the bearing capacity remains basically unchanged. Background technique [0002] With the development of urbanization in our country, the surrounding environment of urban building foundation pits is becoming more and more complex, and the space for grading is becoming less and less, so that there is no space for grading. At this time, the excavation of the foundation pit is to reduce the deformation around the foundation pit. For foundation pit support, reinforced concrete or steel structure internal support + retaining piles (or walls) are often used. If the support method encounters static earth pressure increases and exceeds the allowable load of...

AI Technical Summary

Problems solved by technology

[0002] With the development of urbanization in our country, the surrounding environment of urban building foundation pits is becoming more and more complex, and the space for grading is becoming less and less, so that there is no space for grading. At this time, the excavation of the foundation pit is to reduce the deformation around the foundation pit. For foundation pit support, reinforced concrete or steel structure internal support + retaining piles (or walls) are often used. If the support method encounters an increase in static earth pressure and exceeds the allowable load of the structure, the support structure will often be damaged. and failure, and this process is usually sudden, so often have catastrophic consequences

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