摘要
提出了一种利用低阶模态测试对桥梁构件抗弯刚度进行有限权量平差的最小二乘解识别方法。通过对主跨110m的3跨变截面连续箱梁广州大桥实桥梁体抗弯刚度进行数值模拟识别及结合桥梁现场动静载试验进行识别,表明此方法利用现有的测试技术对大跨径连续梁桥进行抗弯刚度识别,可获得较好的工程精度。
In this paper, a least-square solution with finite power adjustment method of flexural rigidity identification method for long-span conti- nuous beam bridge is developed by using low order mode test. Taking an example of numerical simulation identification and dynamic-static test verification for three-span variable cross-section continuous beam of Guangzhou Bridge with 110 m main span, the present identification method is proved to be quite satisfied for engineering requirements in identifying the flexural rigidity of structures.
出处
《中国市政工程》
2007年第2期77-79,共3页
China Municipal Engineering
基金
广州市留学回国人员启动基金
关键词
大跨径连续梁
构件刚度
有限权量平差
识别方法
long-span continuous beam
rigidity of structures
finite power adjustment
identification method
