Prefabricated assembled integrated foundation pit horizontal supporting system and construction method thereof

Abstract

The invention relates to a prefabricated assembled integrated foundation pit horizontal supporting system and a construction method thereof. The horizontal supporting system comprises a plurality of ring beam components which are connected end to end to form a whole; hinge pieces is welded to the two ends of the ring beam components respectively, the hinge pieces of the adjacent ring beam components need to be stacked up and down and then are fixed; and the middle section of the ring beam components is welded with two brackets with different directions and obliquely arranged; bracket connecting plates are welded to the plane end of the brackets back-to-ring beam components; the two adjacent ring beam components are connected through the inclined struts, and then the adjacent ring beam components are fixed. A plurality of ring beam components are hoisted into a foundation pit on site and are hinged through a hinge joint in sequence, and finally the integrated foundation pit horizontal supporting system is formed together with the inclined struts, so that the quality and stability of the horizontal supporting system can be guaranteed.

Description

technical field [0001] The invention relates to a prefabricated and assembled integral foundation pit horizontal support system and a construction method thereof, belonging to the technical field of civil engineering. Background technique [0002] The foundation pit support system usually includes two parts: the vertical support system and the horizontal support system. The vertical support system is used to directly bear the horizontal earth pressure of the surrounding bottom layer. The common forms of the vertical support system include steel sheet piles, ground connection walls, cast-in-situ piles, etc.; the horizontal support system mainly supports the vertical support system. The common form of horizontal support system includes concrete (or section steel) ring beam, concrete (or section steel) cross brace, etc. [0003] Compared with the traditional horizontal support system made of concrete materials, the horizontal support system assembled on site by various types o...

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Problems solved by technology

[0003] Compared with the traditional horizontal support system made of concrete materials, the horizontal support system assembled on site by various types of steel (including I-beam, channel steel, square steel, etc.) has the advantages of fast construction speed and recyclable steel. and other advantages, but at the same time, it is inevitable that the integrity is poor, especially the corners of the ring beam cannot be effectively connected, and the uneven stress state of each point leads to instability of the horizontal support system structure and uncontrollable construction quality of on-site assembly, etc. shortcoming

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