Seismic reduction and isolation device with combined energy consumption function

Abstract

The invention provides a seismic reduction and isolation device with the combined energy consumption function. The device comprises an upper support plate, a lower support plate, a friction sliding block and buffer units. The upper surface of the lower support plate is an inwards concave surface, the inwards concave surface is of a basin structure, the center of the inwards concave surface is a round plane, and the periphery of the round plane is a curved surface. One end of the friction sliding block is movably arranged in the center of an inwards concave surface of the lower support plate, and the other end of the friction sliding block is movably connected with the upper support plate. One end of the buffer unit extends into the lower surface of the upper support plate, and the other end of the buffer unit makes contact with the inwards concave surface of the lower support plate. According to the seismic reduction and isolation device with the combined energy consumption function, the plane joint type friction sliding block is adopted, and the phenomenon of beam rising is effectively avoided; in the swing process, the joint type friction sliding block moves relative to the lowersupport plate, sliding friction happens between a polyfluortetraethylene plate on the lower part of the joint type friction sliding block and a sliding surface of the round plane of the lower supportplate to consume seismic energy; and each buffer unit is composed of a spring, a damper, a sliding block and a steel ball, because the buffer units are adopted, the capacity of consuming seismic energy is greatly improved.

Description

technical field [0001] The invention relates to the technical field of shock absorption and isolation of bridges, in particular to a composite energy-consuming shock absorption and isolation device. Background technique [0002] Earthquake disasters in recent years have shown that once an earthquake severely damages traffic lines, the possible loss of life, property and indirect economics will become larger and larger. As an important throat of the traffic network, the bridge's anti-seismic performance is related to the smoothness of the entire traffic lifeline, which in turn affects the speed of earthquake relief and post-disaster reconstruction. Therefore, the seismic research of bridge structures has always been a hot issue concerned by scholars. [0003] The bridge seismic design method has gone through the traditional strength seismic theory, ductility seismic theory and seismic isolation technology theory and other stages. Among them, shock absorption and isolation t...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a composite energy-consuming shock-absorbing an

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