Dynamic Behavior of a Cracked Concrete Bridge under a Moving Vehicle

被引：0

作者：

Wang, W. J. ^{[1
]}

Lei, X. G. ^{[1
]}

Lu, Z. R. ^{[1
]}

Liu, J. K. ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Dept Appl Mech & Engn, Guangzhou, Guangdong, Peoples R China

来源：

DYNAMICS FOR SUSTAINABLE ENGINEERING, VOL 2 | 2011年

基金：

中国国家自然科学基金;

关键词：

Bridge-vehicle system; Dynamic response; Cracked concrete bridge; BREATHING CRACK; BEAM; VIBRATION; SUBJECT; DAMAGE; MODEL; LOAD;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Highway bridges are subjected to the dynamic tire forces of moving vehicles. This paper deals with the dynamic responses of a cracked concrete highway bridges induced by passing vehicles. The bridge is modeled Euler beam and a crack model is introduced to model the crack in the beam. Two-axle vehicle is used to represent the vehicle. A coupled bridge-vehicle system is built using the finite element analysis. Newmark direct integration is adopted to calculate the dynamic responses of the coupled system. The effect of the cracks on the response of the bridge is studied. And the road roughness of the bridge and speed of the vehicle on the dynamic response of the bridge is also investigated. Studies in the present paper show that the effect of the cracks on the dynamic response is significant; this indicates it is possible to identify the cracks from the measurement of the response of the bridge.

引用

页码：567 / 575

页数：9

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