厦门大学学报（自然科学版）2017，Vol.56Issue(3)：449-455,7.DOI:10.6043/j.issn.0438-0479.201606039
采用摩擦摆支座的超大跨连续梁桥隔震效果
Seismic Isolation Effect on Super Long Span Continuous Beam Bridge Based on Friction Pendulum Bearings
摘要
Abstract
To study the seismic isolation effect of friction pendulum bearing to super long span continuous beam bridge,a 7-span continuous beam bridge with main span of 240 m is taken as research background.The finite element dynamic model is established,and the soil-pile-interaction effect and nonlinear properties of bearing are considered.The nonlinear seismic analysis result shows that the seismic responses of the fixed pier and piles in anti-seismic system are very huge.However,the seismic responses can be decreased nearly 40％ in friction pendulum bearing isolation system.Mechanisms of the seismic isolation system include primarily following four parts:extending period,minimizing the effective mass of fixed piers,adjusting the force transmission route and increasing energy dissipation.Therefore,the seismic response of super long span continuous beam bridge is improved remarkably.关键词
超大跨度/连续梁桥/摩擦摆支座/隔震效果Key words
superlong-span/continuous beam bridge/friction pendulum bearings/isolation effect分类
交通工程引用本文复制引用
张超,刘涛,余立,颜学渊..采用摩擦摆支座的超大跨连续梁桥隔震效果[J].厦门大学学报（自然科学版）,2017,56(3):449-455,7.基金项目
国家自然科学基金(E51508102) （E51508102）
福建省教育厅重点项目(JK2014005) （JK2014005）
教育部博士点基金(20133514120006) （20133514120006）
