Friction soft steel composite damper and assembly method thereof

Abstract

The invention relates to a friction soft steel composite damper and an assembly method thereof. The friction soft steel composite damper comprises two dumbbell-shaped members, a circular friction plate, soft steel bars and high strength bolts, and the dumbbell-shaped members comprise cylinders. Roof plates and bottom plates which are coaxial with the cylinder are arranged at the upper and lower ends of the cylinders, bolt holes are evenly formed in the peripheries of the outer sides of the roof plates and the bottom plates, the circular friction plate is arranged between the bottom plates of the two dumbbell-shaped members, and through holes are evenly formed in the periphery of the outer side of the circular friction plate. The through holes correspond to the bolt holes in the bottom plates in a one-to-one mode, and the roof plates of the two dumbbell-shaped members are connected and fixed to the upper end and the lower end of an isolation structure through the high strength bolts penetrating through the bolt holes formed in the roof plates. The soft steel bars penetrate through the through holes and the bolt holes corresponding to the through hole in the two roof plates, and thetwo dumbbell-shaped members are connected and fastened to the circular friction plate though screw nuts by both ends of the soft steel bars. According to the friction soft steel composite damper, construction is convenient, maintenance and damage replacement after an earthquake are facilitated, two kinds of energy dissipation mechanisms of yield energy dissipation and friction energy dissipation of soft steel are adopted, and the energy dissipation effect is remarkable.

Description

technical field [0001] The invention relates to a friction mild steel composite damper and an assembly method thereof, and belongs to the technical field of energy dissipation and shock absorption of civil engineering structures. Background technique [0002] Mild steel with low yield point has better ductility and stronger deformation capacity, and is often used in mild steel dampers. The mild steel damper belongs to the metal yield damper, which is a passively controlled energy-dissipating shock-absorbing device. The characteristics of "excellent" have been more and more widely used in the engineering field. [0003] In recent years, various forms of mild steel dampers have been researched and developed at home and abroad, such as stiffened dampers, annular dampers, shear plate dampers, and dual-function mild steel dampers. But this kind of mild steel damper with low yield point has small initial stiffness and low bearing capacity. Although the initial stiffness can be ...

AI Technical Summary

Problems solved by technology

However, this kind of low yield point mild steel damper has small initial stiffness and low bearing capacity.

Although the initial stiffness can be increased by increasing the number of damper steel plates, there are economic and feasibility problems in practical engineering applications.

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