Shock absorption and isolation damper, shock absorption and isolation device and mounting method of shock absorption and isolation device

Abstract

The invention discloses a shock absorption and isolation damper, a shock absorption and isolation device and a mounting method of the shock absorption and isolation device. The shock absorption and isolation damper comprises a spiral shock absorption and isolation main body rotating by a circle, the surface of the spiral shock absorption and isolation main body is a smooth cambered surface, when the shock absorption and isolation main body is stressed to deform, two thirds or more of the section is a deformation energy consumption section, and the shock absorption and isolation main body is provided with two end parts spaced up and down; the two end parts are each connected with a force transmission connecting part; the shock absorption and isolation device comprises a shock absorption and isolation support, the shock absorption and isolation support comprises an upper base plate and a lower base plate, at least one shock absorption and isolation damper is connected between the outer edge of the upper base plate and the outer edge of the lower base plate, and the two force transmission connecting parts of each shock absorption and isolation damper are connected with the upper base plate and the lower base plate through connecting pieces respectively. The shock absorption and isolation device is simple in structure and convenient to replace, is not limited by the height of the support, can achieve energy dissipation and shock absorption in any horizontal direction, can effectively prolong the structural period, provides a stable and higher damping ratio, and can achieve effective control over damping force, horizontal displacement, plastic deformation, the damping ratio and other parameters through computational analysis and tests.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and isolation of bridges, in particular to a vibration reduction and isolation damper, a vibration reduction and isolation device and an installation method thereof. Background technique [0002] The bridge bearing is an important connecting device arranged between the superstructure and the substructure of the bridge. At present, spherical steel bearings and basin rubber bearings are widely used, but these two types of bearings do not have obvious shock absorption and isolation functions. In view of the damage to bridges caused by earthquakes, installing shock-absorbing and isolating devices or dampers between bridge girders and piers has become an important means of bridge shock-isolation design. [0003] Currently used shock absorbers include lead rubber bearings, high damping rubber bearings, friction pendulum bearings, viscous dampers, metal dampers, etc. Metal dampers include E-...

AI Technical Summary

Problems solved by technology

The one-way force of the E-shaped steel and X-shaped steel dampers makes the shock absorption and isolation function limited by direction, and is greatly affected by the space between the bottom of the beam and the top of the pier

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