High-damping seismic mitigation and isolation support for bridge engineering

Abstract

The invention belongs to the field of bridge protection, and particularly relates to a high-damping seismic mitigation and isolation support for bridge engineering, which comprises a base. A buffer box is fixedly mounted at the top of the base, a support cover is slidably connected in the buffer box in a sealed manner, and the top of the support cover extends above the buffer box and is fixedly provided with a support plate. A plurality of positioning rods are fixedly installed at the top of the support plate at equal intervals, hydraulic oil is arranged in the buffer box, a reset plate is slidably connected into the support cover in a sealed mode, a buffer plate located above the reset plate is slidably connected into the support cover, and the buffer plate is elastically slidably connected with the inner wall of the top of one side of the support cover. After the bridge plate is subjected to vibration force, the two reset springs and the two limiting springs can be in a stress state, so that the purpose of double damping protection on the bridge plate can be achieved, the bridge plate can be effectively prevented from being damaged, and the service life of the bridge plate can be further prolonged.

Description

technical field [0001] The invention belongs to the technical field of bridge protection, and relates to a high-damping shock-absorbing and isolation bearing used in bridge engineering. Background technique [0002] Bridge engineering is one of the lifeline projects. Earthquake disasters at home and abroad show that the damage and collapse of bridges in earthquake areas not only hindered the disaster relief operations at that time, but also affected the restoration and reconstruction of bridges after the disaster. The bridge bearing is an important part connecting the upper structure and the lower structure of the bridge. It can reliably transmit the force and deformation, displacement and rotation angle of the upper structure of the bridge to the lower structure of the bridge; at the same time, the bridge bearing is also the weak part of the bridge's earthquake resistance. Therefore, it is necessary to carry out research and structural innovation on bridge bearings, especia...

AI Technical Summary

Problems solved by technology

The lead core rubber bearing has poor durability, weak bearing capacity, easy aging, rubber material hardens at low temperature, softens at high temperature and reduces energy consumption, and the lead core in it will cause environmental pollution, etc.; polyurethane spring ball type The durability of the bearing is relatively poor, and the yield displacement after being subjected to external force is small; the tensile or overturning resistance of the plane sliding bearing is relatively poor, and it has no recovery ability. It needs to be used with other types of bearings with restoring force. It does not have a good protective effect, so we propose a high-damping shock-absorbing and isolating bearing for bridge engineering to solve the above-mentioned problems

Images