| 蒋伟,李洞明,李杨.塔梁间纵向弹性约束对斜拉桥抗震性能的影响[J].现代交通技术,2007,(5):50-52 |
| 塔梁间纵向弹性约束对斜拉桥抗震性能的影响 |
| The Influence of Longitudinal Elastic Constraints between the Tower and Beam on the Seismic Performance of Cable-stayed Bridges |
| |
| DOI： |
| 中文关键词: 斜拉桥 纵向弹性约束 抗震性能 |
| 英文关键词:cable-stayed bridges longitudinal elastic constraints seismic performance |
| 基金项目: |
| 蒋伟 李洞明 李杨 |
| [1]江苏省交通规划设计院有限公司,南京210005 [2]上海市政工程设计研究总院,上海200092 [3]北京中交公规路桥技术有限公司,北京100010 |
| 摘要点击次数: 3986 |
| 全文下载次数: 574 |
| 中文摘要: |
| 目前漂浮、半漂浮体系斜拉桥是广泛采用的的斜拉桥体系。在地震荷载作用下这两种体系的内力反应比较小，而位移反应比较大，常常不能满足要求。对塔梁间纵向弹性约束对斜拉桥抗震性能的影响进行了理论分析和实例计算。计算结果表明它能显著的减小漂浮、半漂浮体系斜拉桥在地震作用下的位移反应，又能使内力反应满足抗震要求，因此它不失为一种有效的改善漂浮、半漂浮体系斜拉桥抗震性能的手段。 |
| 英文摘要: |
| Floating and half-floating cable-stayed bridges are widely used today.Under the load of seism internal force is relatively minor,but the displacement is quite large,so it seldom meets the needs.In this paper the influence of longitudinal elastic constraints between the tower and beam on the seismic performance of cable-stayed bridges are analyzed theoretically, and an example is taken to calculate.The result shows that under the load of seism the constraints can remarkably reduce displacement of floating and half-floating cable-stayed bridges and make the internal force meet the needs.So applying elastic constraints between the tower and beam is a method of improving the seismic performance of floating and half-floating cable-stayed bridges. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
