Weaking type connecting cover plate buckling restraining system

Abstract

The invention relates to a weakening type connecting cover plate buckling restraining system which comprises a first H-shaped non-yield steel beam and a second H-shaped non-yield steel beam, adjacent end faces of the first H-shaped non-yield steel beam and the second H-shaped non-yield steel beam are spliced, lower base plates are placed at the splicing positions of upper flanges and lower flanges of the first H-shaped non-yield steel beam and the second H-shaped non-yield steel beam respectively, and the lower base plates are symmetrical relative to a web plate. A left beam base plate and a right beam base plate are arranged on the front side and the rear side, close to the lower base plate, of the lower base plate respectively, a dog-bone type flange connecting cover plate is placed on the outer side of the lower base plate, symmetrical arc-shaped notches are formed in the two sides of the middle of the dog-bone type flange connecting cover plate in the width direction, and arc-shaped base plates are placed at the arc-shaped notches. An upper base plate is arranged on the outer side of the dog-bone type flange connecting cover plate, the upper base plate, the arc-shaped base plate and the lower base plate are fixed together, and the two ends of the dog-bone type flange connecting cover plate are fixed to the H-shaped non-yield steel beam through a beam left base plate and a beam right base plate respectively. The post-earthquake replaceable performance of part of components in the structure is effectively achieved.

Description

technical field [0001] The invention belongs to a steel frame structure in the field of construction engineering, and relates to a weakened connecting cover plate buckling restraint system. Background technique [0002] The steel frame structure has the advantages of stable quality, high production efficiency, light weight of materials, good seismic performance, green environmental protection, etc., which is conducive to the realization of sustainable social development; however, the joint connection form is single, the quality of on-site welds is difficult to guarantee, and it is difficult to prevent corrosion and fire prevention. The problem of insufficient treatment has become the main bottleneck restricting the popularization and application of steel frame structures. Earthquake disasters have always been a threat to human life and economic property. For the seven lifeline projects, the maintenance or rapid recovery of functions is extremely important for post-disaster ...

AI Technical Summary

Problems solved by technology

Under the action of negative bending moment at the beam end, the buckling of the connecting steel plate is serious, which makes the hysteretic curve pinch together, resulting in a decrease in energy dissipation capacity and poor fatigue performance

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