自锚式斜拉-悬索协作体系桥铅芯橡胶支座隔震参数分析  

The Seismic Isolation of Lead Rubber Bearing for Self-anchored Cable-stayed and Suspension Bridge

作　　者：郭子华[1] 

机构地区：[1]大连理工大学土木建筑设计研究院,大连辽宁116023

出　　处：《时代报告（学术版）》2011年第12X期200-201,共2页Time report

基　　金：国家交通部西部建设基金（200631882350）

摘　　要：以大连湾跨海大桥方案为背景，对设置了铅芯橡胶隔震支座的结构进行了非线性时程分析，并对铅芯橡胶支座进行了参数分析。分析结果表明随屈服后刚度增大时，梁端和塔顶的纵向位移有明显减小的趋势，而塔底的弯矩和剪力有减小的趋势，墩底弯矩和剪力有增大的趋势；当屈服力增加时，梁端和塔顶的纵向位移有明显减小的趋势，而塔底与墩底的弯矩和剪力的几乎无变化。The nonlinear time-history of Dalian Bay Cross-Sea Bridge programme that set up lead rubber bearings had been analyzed, meanwhile, discussed parameter change and its impact on structural internal force and displacement. Analysis results showed that with increasing of post-yield stiffness, not only longitudinal displacement of beam end and tower top, but also moment and shear force at bottom of tower had a decrease; however, moment and shear force at bottom of pier had a increasing trend; When Yield strength increases, longitudinal displacement of beam end and tower top had a significant trend of reducing, but moments and shear forces at bottom of pier and tower almost had no change.

关 键 词：自锚式斜拉-悬索协作体系桥 铅芯橡胶支座 隔震 参数分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]