Dynamic assessment of curved cable-stayed bridge by model updating

被引:210
作者
Brownjohn, JMW [1 ]
Xia, PQ [1 ]
机构
[1] Nanyang Technol Univ, Sch Civil & Struct Engn, Singapore 639798, Singapore
来源
JOURNAL OF STRUCTURAL ENGINEERING-ASCE | 2000年 / 126卷 / 02期
关键词
D O I
10.1061/(ASCE)0733-9445(2000)126:2(252)
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Bridges are indispensable components of the infrastructure of modern society, and their assessment via techniques of structural dynamics is assuming greater importance. This assessment concerns performance of the as-built structure compared to the design and can also extend to the assessment of structural deterioration or damage. Simple validation of numerical results by dynamic testing has met some success; however, feedback from testing into analysis is usually crude, and only recently have systematic techniques been developed that can be supplied to such structures. This paper investigates the application of sensitivity-based model updating technology to the dynamic assessment of the Safti Link Bridge, a curved cable-stayed bridge in Singapore. Based on the measured modal data from prototype testing, the simulated dynamic properties obtained via finite-element analysis have been significantly improved by modification of uncertain structural parameters such as Young's modulus of concrete and structural geometry.
引用
收藏
页码:252 / 260
页数:9
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