Monitoring and Evaluation of Overturning Resistance of Box Girder Bridges Based on Time-Varying Reliability Analysis

AbstractIn recent years, overturning accidents of box girder bridges have occurred frequently, causing widespread concern among researchers. From the perspective of bridge structure monitoring, this paper presents two technical routes for evaluating the risk of potential overturning risk of a bridge...

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Bibliographic Details
Published in:Journal of performance of constructed facilities 2020-02, Vol.34 (1)
Main Authors: Dan, Danhui, Yu, Xuewen, Yan, Xingfei, Zhang, Kailong
Format: Article
Language:English
Subjects:
Accidents
Aging (materials)
Box girder bridges
Box girders
Bridge loads
Control stability
Feasibility
Monitoring
Reliability analysis
Rotating matter
Rubber
Structural stability
Technical Papers
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Summary:AbstractIn recent years, overturning accidents of box girder bridges have occurred frequently, causing widespread concern among researchers. From the perspective of bridge structure monitoring, this paper presents two technical routes for evaluating the risk of potential overturning risk of a bridge: (1) traffic loads monitoring based on an anti-overturning stability coefficient and (2) structural response monitoring based on the control of a bearing’s rotational angle. For the second route, a simple and feasible monitoring scheme is presented depending on the structural response—displacement of measured points on both sides of bearings. Then, a method to assess bridge anti-overturning reliability is proposed. The influence of aging of rubber material on the rotation performance of a bearing is further considered. Finally, the study applied the method described above to an anti-overturning analysis of the Northeast Ramp Bridge at Tongji Road in Shanghai, which demonstrated the method’s feasibility and effectiveness.
ISSN:0887-3828
1943-5509
DOI:10.1061/(ASCE)CF.1943-5509.0001375