苏通大桥全桥气弹模型设计与模态调试  

FULL AEROELASTIC MODEL DESIGN AND MODAL TEST FOR SUTONG BRIDGE

作　　者：许福友[1] 马如进[2] 陈艾荣[2] 王达磊[2] 

机构地区：[1]大连理工大学土木水利学院,大连116024 [2]同济大学桥梁工程系,上海200092

出　　处：《工程力学》2009年第12期150-154,174,共6页Engineering Mechanics

基　　金：国家自然科学基金项目(50708012);高等学校博士点新教师基金项目(20070141073);"十一五"国家科技支撑计划项目(2006BAG04B01);辽宁省博士启动基金项目(20081086)

摘　　要：对目前世界上最大跨径斜拉桥——苏通大桥全桥气弹模型设计、制作及模态测试进行了全面的论述。首先介绍了全桥气弹模型主梁、拉索、桥塔各构件应满足的相似条件和各参数对应的相似关系;然后详细给出了各构件模型的设计和制作方法;最后详述了成桥、最大单悬臂和最大双悬臂施工3种典型状态气弹模型模态调试方法与结果。根据模态测试结果可知:苏通大桥全桥气弹模型设计和制作均很好地满足试验要求,可为大跨度缆索承重桥梁全桥气弹模型设计提供参考和借鉴。The design, fabrication of full aeroelastic model and modal test for Sutong bridge （the world＇s longest span cable-stayed bridge presently） are elaborated in this study. Firstly, the required similarity conditions of structural components such as girder, cable stays, and pylons of the full-bridge aeroelastic model, as well as parametric similarity relations, are introduced. Then, the design concept and manufacture technique are expounded. In the end, the modal testing approach and results of three typical states （service, the longest single-cantilever and the longest double-cantilever construction） of the full aeroelastic model are presented in detail. The modal testing results approve that the design and manufacture of Sutong bridge full aeroelastic model meet the test requirements well, and it can be adopted as a successful reference for model design of other long-span cable-stayed bridges.

关 键 词：大跨度斜拉桥 气弹模型 模型设计 模态调试 风洞试验 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]