| 大跨度自锚式悬索桥的颤振稳定性研究及风洞实验 |
| |
| 引用本文： | 唐冕,陈政清.大跨度自锚式悬索桥的颤振稳定性研究及风洞实验[J].中南大学学报(自然科学版),2007,38(1):164-169. |
| |
| 作者姓名： | 唐冕 陈政清 |
| |
| 作者单位： | 中南大学土木建筑工程学院，湖南大学风工程研究中心 湖南长沙，410075，湖南长沙，410082 |
| |
| 摘 要： | 研究大跨度自锚式悬索桥钢加劲梁的截面选形、结构动力特性分析、施工及运营状态的气动力性能等问题;以湘江三汊矶大桥为背景,基于多振型耦合颤振的气弹性理论,分析计算自锚式悬索桥的颤振临界风速;探讨截面形式、施工方法等对钢加劲梁的气动参数及颤振稳定性的影响;此外,与该桥的节段模型和全桥气弹性风洞实验的结果进行对比。研究结果表明:自锚式悬索桥的抗风稳定性主要与主梁的施工方法和架设过程有关;桥梁颤振临界风速随着结构体系的转换而变化,其抗风稳定性主要对结构频率比较敏感;该种桥式具有良好的抗风稳定性。
|
| 关 键 词： | 气弹性 颤振 钢箱梁 自锚式 风洞实验 |
| 文章编号： | 1672-7207（2007）01-0164-06 |
| 修稿时间： | 2006-06-10 |
Flutter stability of long span self-anchored suspension bridges and wind-tunnel tests |
| |
| TANG Mian,CHEN Zheng-qing.Flutter stability of long span self-anchored suspension bridges and wind-tunnel tests[J].Journal of Central South University:Science and Technology,2007,38(1):164-169. |
| |
| Authors: | TANG Mian CHEN Zheng-qing |
| |
| Institution: | 1. School of Civil and Architectural Engineering, Central South University, Changsha 410075, China; 2. Wind Engineering Research Centre, Hunan University, Changsha 410082, China |
| |
| Abstract: | The section shape,dynamic characteristics,aerodynamic stability in construction and run stage through Sanchaji Bridge of Xiangjiang were studied based on multi-mode flutter theory,the flutter critical wind speed was analyzed,section shape and erection method were chosen,and the influencing factor on flutter stability was investigated. The results show that the aerodynamic stability analysis of self-anchored suspension bridges is related to the construction method and erection course mostly.The flutter critical wind speed changes with structural system conversion and is sensitive to structural frequency.The results of calculation are compared with those of the wind tunnel experiments,and this kind of bridge has stronger stability of wind resistance. |
| |
| Keywords: | aeroelastic flutter steel girder self-anchored wind-tunnel test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
