Assembly type self-resetting friction energy dissipation support member with variable prestress

Abstract

The invention provides an assembly type self-resetting friction energy dissipation support member with variable prestress. The support member includes a circular steel pipe, a rectangular steel pipe,cover plates, two sets of groove steel, disc springs and friction angle steel. The middles of the long sides of sections of two ends of the rectangular steel pipe are provided with notches, and the circular steel pipe sleeves the inner side of the rectangular steel pipe and is welded fixedly with the rectangular steel pipe at the notches of the rectangular steel pipe to form an inner pipe. The twodisc springs sleeve the two ends of the circular steel pipe respectively; the two sets of groove steel are fixedly and symmetrically connected between the two cover plates through connection bolts toform an outer pipe; the inner pipe and the outer pipe are movably connected through the friction angle steel. The inner pipe formed by welding fixation of the circular steel pipe and the rectangularsteel pipe and the outer pipe formed by fixed connection of the cover plates and the groove steel through the bolts are movably connected through the friction angle steel, the whole structure can be assembled, the friction angle steel can achieve the anti-seismic effect, and quick repair and replacement after an earthquake are facilitated.

Description

technical field [0001] The invention belongs to the technical field of engineering anti-seismic components, and in particular relates to an assembled self-resetting frictional energy-dissipating support component with variable prestress. Background technique [0002] Bracing is one of the important lateral force-resisting components in high-rise building structures. It can also dissipate energy under earthquake action to avoid serious damage to the main structure. Ordinary supports will buckle under compression, and their stiffness and bearing capacity will decrease sharply after buckling, so the hysteretic performance of ordinary supports is poor. At the same time, because the traditional support design is controlled by stability, the slenderness ratio of the support is usually strictly limited, but this will increase the cross-sectional size of the support, which will lead to the strengthening of the seismic action of the structure, so that the cross-sectional size of bea...

AI Technical Summary

Problems solved by technology

[0006] 1. All parts of the supporting member are fully welded, which makes installation and disassembly extremely troublesome;

[0007] 2. In the design of the supporting structure, the bearing capacity required for each floor is often different, and the prestress of the existing supporting members cannot be adjusted, which affects its scope of use;

[0008] 3. The deformability of prestressed tendons is poor, and the cost of shape memory alloys is high, which increases the investment in engineering costs

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