Dynamic test and finite element model updating of bridge structures based on ambient vibration

2008, Volume 2, Issue 2

Abstract

Keywords

Related Research

Frontiers of Structural and Civil Engineering >> 2008, Volume 2, Issue 2 doi: 10.1007/s11709-008-0028-4

Dynamic test and finite element model updating of bridge structures based on ambient vibration

1.School of Civil Engineering and Mechanics, Huazhong University of Science & Technology; 2.Wuhan Tianxinzhou Road & Bridge Investment Co Ltd

Available online: 2008-06-05

HTML13 PDF 2 Collect 0

Next Previous

Abstract

The dynamic characteristics of bridge structures are the basis of structural dynamic response and seismic analysis, and are also an important target of health condition monitoring. In this paper, a three-dimensional finite-element model is first established for a highway bridge over a railroad on No.312 National Highway. Based on design drawings, the dynamic characteristics of the bridge are studied using finite element analysis and ambient vibration measurements. Thus, a set of data is selected based on sensitivity analysis and optimization theory; the finite element model of the bridge is updated. The numerical and experimental results show that the updated method is more simple and effective, the updated finite element model can reflect the dynamic characteristics of the bridge better, and it can be used to predict the dynamic response under complex external forces. It is also helpful for further damage identification and health condition monitoring.

Keywords

numerical ; effective ; Highway ; vibration ; complex external

Related Research