Research on reinforcement technology of existing double-way curved arch bridge

Archives of civil engineering

article

Kexin X. Zhang¹  Tianyu Y. Qi¹  Xingwei W. Xue¹  Yanfeng F. Li¹  Zhimin M. Zhu² 

[1] Shenyang Jianzhu University, School of Traffic Engineering;Liaoning Urban Construction Design Institute Co. LTD

关键词: increasing the cross-section reinforcement method;    two-way curved arch bridge;    reinforcement effect;   

DOI  :  10.24425/ace.2021.137186

学科分类：建筑学

来源: Polska Akademia Nauk * Instytut Podstawowych Problemow Techniki / Polish Academy of Sciences, Institute of Fundamental Technological Research

【 摘 要 】

Two-way curved arch bridges inherit the fine tradition of masonry structures, making full use of the advantages of prefabricated assembly, it adapts to the situation of no support construction and no large lifting machine and tools, and has the characteristics of convenient construction method and saving material consumption. In appearance, the two-way curved arch bridge has strong national cultural characteristics. The prefabricated components of the two-way curved arch bridge are fragmentary, complicated in bearing and poor in integrity. Most of the two-way curved arch bridges in service have been built for a long time and lack of maintenance and management. Increasing the cross-section reinforcement method is one of the two-way curved arch reinforcement methods. It has a significant effect, convenient construction, good rigidity and stability characteristics after the reinforcement. Through theoretical analysis, combined with a static load test results of the assessment of the bridge reinforcement effect. Through load test, it is found that the deflection of the arch rib after reinforcement is reduced by 9%~19% and the strain of the arch rib is reduced by 12%~22%. Through finite element calculation, the crack width of the reinforced arch rib decreases by 8.3%~14.2%. The results show that the stress and deflection are greatly improved by the method of increasing section.

【 授权许可】

Unknown