Reinforced connecting structure of triangular piece and foundation pit

Abstract

The invention provides a reinforced connection structure of a triangular piece and a foundation pit, the reinforced connection structure is arranged between a fender post and a supporting beam assembly, the fender post is connected with a steel enclosing purlin, the reinforced connection structure comprises the triangular piece and an anti-arch piece, the anti-arch piece is arranged on the waist edge, back on to the supporting beam assembly, of the triangular piece, the triangular part comprises a bottom profile steel section and a triangular body connected to the upper portion of the bottom profile steel section, the anti-arch part comprises a supporting profile steel section and a slope-shaped body connected to the upper portion of the supporting profile steel section, and the bottom profile steel section on the triangular part and the supporting profile steel section on the anti-arch part are in butt joint and embedded into the layer where the steel enclosing purlin is located. The bottom profile steel section, the supporting profile steel section and the steel enclosing purlin are spliced to form a continuous enclosing purlin beam, and the slope-shaped main body of the arch-resisting piece is connected to the waist edge of the triangular main body of the triangular piece in a pressing mode. According to the technical scheme, the risk that the steel enclosing purlin on the foundation pit arches and deforms can be reduced, and the stability of foundation pit enclosure is improved.

Description

technical field [0001] The invention relates to the field of building foundation pit enclosure, in particular to a reinforced connection structure between a triangular piece and a foundation pit. Background technique [0002] In order to ensure the safety of the underground structure and the surrounding environment of the foundation pit, it is necessary to adopt protective measures such as support and reinforcement on and around the side wall of the foundation pit. The steel support system is a protective measure with many advantages. The current foundation pit steel support system usually includes retaining piles and purlins arranged around the edge of the foundation pit and a combination of steel supports supported on the adjacent or opposite pit walls of the foundation pit. [0003] In the related art, a figure-eight combined support formed by a support beam and a triangular piece between the pit walls on opposite sides of the foundation pit is a common support method. T...

AI Technical Summary

Problems solved by technology

The support beam and the purlin are connected by a triangle, and the support beam abuts against one side of the triangle, resulting in a unilateral force between the triangle and the purlin. When the span of the purlin on the side of the triangle facing away from the support beam When it is longer, it is prone to arch deformation due to the extrusion of supporting beams and triangular pieces, which seriously threatens the safety of foundation pit support

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