东南大学学报（自然科学版）2017，Vol.47Issue(2)：343-349,7.DOI:10.3969/j.issn.1001-0505.2017.02.024
行波输入下大跨度三塔悬索桥减震控制
Seismic control of long-span triple-tower suspension bridge under travelling wave action
摘要
Abstract
To study the seismic control of a long-span triple-tower suspension bridge considering the travelling wave effect,the Taizhou Bridge was taken as a research object and a finite element model of this bridge was established.The influences of the elastic cable and the viscous damper on the seisrnic control efficiency with different apparent wave velocities were investigated.The results show that the elastic cable can effectively control the relative displacement between the main girder and the mid-tower,but the displacement at the side-tower has an increase up to 95.8％ instead of a decrease.If the elastic cable is utilized,it is suggested to be installed only at the mid-tower.At any apparent wave velocity,the viscous damper exhibits good control efficiency to the relative displacement between the main girder and the mid-tower.The shear force at the bottom of the mid-tower increases in multiples with the adoption of the elastic cable,while it increases no more than 50％ with the utilization of the viscous damper.Therefore,the viscous damper is more suitable than the elastic cable in the seismic control of a long-span triple-tower suspension bridge.关键词
三塔悬索桥/行波效应/减震控制/弹性索/黏滞阻尼器Key words
triple-tower suspension bridge/travelling wave effect/seismic control/elastic cable/viscous damper分类
交通工程引用本文复制引用
王浩,陶天友,张玉平,王春峰,李爱群..行波输入下大跨度三塔悬索桥减震控制[J].东南大学学报（自然科学版）,2017,47(2):343-349,7.基金项目
国家重点基础研究发展计划(973计划)青年科学家专题资助项目(2015CB060000)、国家自然科学基金资助项目(51278104,51578151)、中央高校基本科研业务费专项资金资助项目(2242015K42028)、东南大学优秀博士学位论文培育基金资助项目(YBJJ1659). （973计划）
