Bridge seismic mitigation and isolation device suitable for overlarge relative displacement of near-adjacent fault pier beam

• Main Authors: ZHAO CANHUI, YANG LEI, KANG WEI, DAI SHENGYONG, XIE MINGZHI, SUN CAIZHI, JIA HONGYU, GUO DEPING, ZHENG SHIXIONG, DU XIULI, YANG JIAN, ZHANG YU, ZHANG CHAO, ZHAI YIKUN
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2023
• Subjects: ASSEMBLY OF BRIDGES; BLASTING; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; OR VIADUCTS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a seismic mitigation and isolation device for a bridge in a near fault area. The seismic mitigation and isolation device comprises a seismic mitigation and energy dissipation support, a seismic mitigation sliding disc, a rolling chassis and a support top plate. The top of the shock absorption and energy consumption support is fixedly connected with the bottom end of the support top plate; an upper disc and a lower disc which are fixedly connected with a rubber spring and a rubber damping block are arranged in the damping and energy dissipation support. Two layers of discontinuous arc-shaped vertical baffles are arranged on the periphery of the lower disc in the radial direction, and the vertical baffles comprise the first vertical baffle and the second vertical baffle from inside to outside. A low-yield bending plate is arranged between the second vertical baffle and the first vertical baffle; the first-layer vertical baffle is connected with the upper disc through a high-strength spri