Inner oblique beam supporting structure for oversized-area deep foundation pit and construction method

Abstract

The invention discloses an inner obliquely beam supporting structure for an oversized-area deep foundation pit. The inner oblique beam supporting structure comprises a pouring pile and an inner oblique beam, wherein the pouring pile is arranged at the edge of the foundation pit, the upper end of the inner oblique beam is fixedly connected with a top beam or a waist beam arranged on the pouring pile, and the lower end of the inner oblique beam is fixedly connected with a basement base board. The invention further discloses a construction method for the supporting structure. The construction method comprises the following steps of constructing a fender post, constructing the pouring pile in the fender post, excavating earth in a graded mode to the elevation of a cushion layer of the top beam, constructing the reinforced concrete top beam and maintaining the reinforced concrete top beam to the design strength, excavating earth in a graded mode to the design elevation of the pit bottom except earth outside a reversed stereobate, constructing basement base boards except basement base boards outside the reversed stereobate, constructing a branch oblique beam supporting seat, constructing the inner oblique beam, and excavating and removing the reversed stereobate. A deep foundation pit inner support constructed according to the supporting structure and the construction method is reliable in technique, convenient to operate, obvious in benefit and capable of meeting requirements for energy conservation and environment protection.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an oblique beam support structure and a construction method in a super-large-area deep foundation pit. Background technique [0002] With the advancement of urban construction, super-large-area deep foundation pit projects are gradually increasing, and higher requirements are put forward for foundation pit excavation technology. The degree of mechanization of excavation, the shortening of the construction period, the reduction of project costs, the improvement of economic benefits and other factors, and the construction of super-large-area deep foundation pit projects are even more challenging. [0003] The traditional general method is: first, make a reinforced concrete inner support beam support, this kind of inner support increases with the increase of the foundation pit area, costing materials and labor; second, make a ring Arched reinforced concrete inner supp...

AI Technical Summary

Problems solved by technology

Although the second method is more advanced than the first method, it still cannot solve the problems of cumbersome construction procedures for reinforced concrete horizontal beams and vertical perforated pile lattice columns, heavy components, low recovery rate, and a lot of construction waste. , and it still has great limitations for greatly improving the degree of mechanization of earthwork excavation and transportation

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