Mobile three-way vibration absorption device for near-field earthquakes

Abstract

A mobile three-way vibration absorption device for near-field earthquakes comprises a tensile sleeve and a vibration absorbing tenon rod; the bottom of the tensile sleeve is a tensile bottom surface;a tensile through hole for the vibration absorbing tenon rod to penetrate through is formed in the center of the tensile bottom surface; the vibration absorbing tenon rod comprises a mounting sectionat the upper part, a yielding section at the middle part and a fixed section at the lower part; the external surface of the mounting section is not in contact with the wall of the tensile through hole; a horizontal displacement clearance is formed between the external surface of the mounting section and the wall of the tensile through hole; a damping vibration absorbing block and a rotating pair,which are arranged on the tensile bottom surface, sleeve the mounting section in the chamber of the tensile sleeve; the external surface of the rotating pair is not in contact with the wall of the tensile sleeve; and a horizontal displacement clearance is formed between the external surface of the rotating pair and the tensile sleeve. By designing the tensile structure and the damping vibration absorbing part at the top of the vibration absorbing tenon rod, seismic mitigation and absorption functions in both the vertical direction and the horizontal direction are realized.

Description

technical field [0001] The invention relates to the field of bridges and building structures, and relates to an active three-way damping device for near-field earthquakes. Background technique [0002] In recent years, with the development of bridge anti-seismic design technology and the deepening of human understanding of earthquakes, all kinds of buildings, including bridges, have put forward higher requirements for anti-seismic structures. More and more bridges are designed with isolation earthquake design. The bridge seismic isolation technology is to install seismic isolation products at the connection between the beam body and the pier, and reduce the seismic response of the structure by changing the structural period and damping. However, in some high-intensity earthquake areas, the requirements for shock-absorbing and isolation products are even higher. When near-field earthquakes occur, the shock-absorbing and isolating products must meet the requirements of vertic...

AI Technical Summary

Problems solved by technology

The above shock-absorbing and isolation products are all horizontal and two-way shock-isolation products, which cannot meet the requirements of vertical shock-isolation

[0004] However, some tensile devices and anti-drop beam devices used on bridges have tensile functions in the vertical direction, but they are hard-resistant structures, and they do not have shock-absorbing and isolation functions in the vertical and horizontal directions.

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