Research on Comprehensive Evaluation Method for Antioverturning Safety of Bridges with Bent-straight Beam

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Keke, Peng^1

School of Transportation and Civil Engineering and Architecture, Foshan University, Foshan

528000, China^1

关键词: Anti-overturning;    Comprehensive evaluation;    Continuous beams;    Continuous box girders;    Critical state;    Failure mechanism;    Safety evaluation methods;    Single column piers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012012/pdf
DOI  :  10.1088/1757-899X/423/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Based on study of the critical state of overturning and the selection of overturning axis, a comprehensive evaluation method for anti-overturning safety is given for the continuous beam of bridge axis located on the bent-straight beam line. Based on the failure mechanism of the continuous box girder, the model of support separation is given for the overturning failure of bridge, and the specific calculation method for the safety factor of overturning is given. Taking a reinforced continuous box beam of the single-column pier on bent-straight-combined line as an example, a case study of a real bridge is carried out, and a full calculation of the support separation, the support angle and the overturning safety factor of the bridge is carried out. The application of a real bridge shows that the safety evaluation method for anti-overturning safety of bridges with bent-straight beam proposed in this paper is practical and reasonable.