A shape memory alloy strand self-resetting friction anti-buckling support

Abstract

A shape memory alloy strand self-reset friction anti-buckling support belongs to the technical field of disaster prevention and shock absorption. It is mainly composed of a flat steel inner core, inner and outer steel sleeves, friction plates, high-strength bolts, shape memory alloy strands, left and right end plates, backing plates and anchors. Two ends of the inner core of the in-line steel plate are welded with stiffening ribs respectively, and are respectively connected to the left and right end plates. The inner steel sleeve acts as a peripheral restraint steel pipe and is sheathed outside the in-line steel plate, the in-line steel plate is placed diagonally in the inner steel sleeve, and the inner steel sleeve and the inner core of the in-line steel plate have a certain gap. The inner steel sleeve is connected to the right end plate, the outer steel sleeve is connected to the left end plate, the friction plate is installed between the mutually nested parts of the inner and outer steel sleeves through high-strength bolts, and the shape memory alloy stranded wire is pretensioned and passed through the anchor. Anchored between the inner and outer steel casings. The present invention solves the increased post-earthquake maintenance and reconstruction costs caused by excessive residual deformation of ordinary supports under the action of large or medium earthquakes.

Description

technical field [0001] The invention relates to the field of anti-seismic technology of civil engineering, and is an energy-dissipating and shock-absorbing member used in the field of construction engineering. The self-resetting friction anti-buckling support has good energy consumption and self-resetting capabilities. Background technique [0002] In recent years, the social and economic problems caused by earthquakes have drawn more and more attention to structural anti-seismic technology. The frame bracing system solves the problem of lateral stiffness of the structure to a certain extent, but under the reciprocating load of a large earthquake, the ordinary bracing is likely to cause failure and destruction of itself and the connection. dissipate the seismic input energy. The anti-buckling support can yield without buckling under both tension and compression, so it overcomes the shortcomings of the traditional support that the buckling strength under compression is signi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem of excessive residual deformation of buckling-resistant braces under the action of large or moderate earthquakes, resulting in increased post-earthquake maintenance and reconstruction costs and insufficient energy dissipation capacity. Reset friction anti-buckling brace

Images