行波效应对大跨度多塔斜拉桥地震反应影响

方圆;李建中;彭天波;邓育林

振动与冲击 ›› 2010, Vol. 29 ›› Issue (10) : 148-152,.

PDF(2298 KB)
PDF(2298 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (10) : 148-152,.
论文

行波效应对大跨度多塔斜拉桥地震反应影响

  • 方圆1;李建中1;彭天波1;邓育林2
作者信息 +

INFLUENCE OF TRAVELLING-WAVE EFFECT TO SEISMIC RESPONSE OF LONGSPAN MULTI-TOWER CABLE STAYED BRIDGE

  • FANG Yuan1;LI Jian-zhong1; PENG Tian-bo1; DENG Yu-lin2
Author information +
文章历史 +

摘要

结合一座大跨多塔斜拉桥工程设计实例,采用动态时程分析方法,对比研究了桥塔、主梁之间纵向固定以及纵向活动两种约束方式下,行波效应对各自结构体系纵向地震反应的影响。分析表明:对于多塔斜拉桥,行波效应对结构各桥塔塔底内力,以及各联梁端、各桥塔塔顶位移响应的影响不同。对于不同桥塔、主梁纵向约束体系的多塔斜拉桥,行波效应对其地震响应的影响程度也不同;塔、梁纵向固定的情况下,行波效应的影响较大,反之,塔、梁纵向活动的情况下,行波效应的影响较小。


Abstract

Based on an engineering design case of a multi-tower cable stayed bridge, influence of travelling-wave effect to seismic response of multi-tower cable stayed bridge with different constraint manners between tower and beam is discussed by means of dynamic response history analysis. The results indicate that influence of travelling-wave effect to seismic response of bending moment and shearing force in the bottom of each tower is different, displacement on the top of each tower and displacement of each beam unite is also different. The influence of travelling-wave effect to seismic response of multi-tower cable stayed bridges with different constraint manners between tower and beam is different, too. It will have relatively big influence when longitudinal constraint between tower and beam is locked. On the contrary, it will have relatively small influence when longitudinal constraint between tower and beam is free.

关键词

多塔斜拉桥 / 行波效应 / 地震反应

Key words

multi-tower cable stayed bridge / travelling-wave effect / seismic response

引用本文

导出引用
方圆;李建中;彭天波;邓育林. 行波效应对大跨度多塔斜拉桥地震反应影响[J]. 振动与冲击, 2010, 29(10): 148-152,
FANG Yuan;LI Jian-zhong;PENG Tian-bo;DENG Yu-lin. INFLUENCE OF TRAVELLING-WAVE EFFECT TO SEISMIC RESPONSE OF LONGSPAN MULTI-TOWER CABLE STAYED BRIDGE[J]. Journal of Vibration and Shock, 2010, 29(10): 148-152,

PDF(2298 KB)

Accesses

Citation

Detail

段落导航
相关文章

/