STUDY ON SEISMIC ISOLATION OF HIGH-SPEED BRIDGE FABRICATED LEAD RUBBER BEARING
Lead rubber bearing (LRB) is a new type of earthquake-resistance rubber bearing, formed by inserting lead-core into ordinary laminated rubber bearing, vertical supporting, horizontal displacement and hysteretic damping are hung in single unit together. Because lead-core can dissipate seismic energy and increase stiffness under load simultaneously, most of the requirements of the Seismic isolation system can be satisfied , the material-device has been found widespread application prospect in bridge Engineering. Equivalent linear model of hysteretic characteristics, computational method and the varying range of design parameters of LRB are presented. A full-bridge model of multi-span simple supported bridge with LRB is established in which box beam、LRB and piers are taken into account as a whole. By changing the property of earthquake excitation, ground motion intensity, vehicle speed and so on, the response of Bridge vibration system are analyzed, response law and characteristics of Bridge with LRB under different excitations are investigated systematically, compared with bridge with common bearing.
Lizhong Jiang Lingkun Chen Peng Liu Lili He
School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, Chin Jiangxi Design Institute of Coal Mine Development Comprehensive Utilization, Pingxiang 337000,China
国际会议
桂林
英文
1-6
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）