Seismic Performance and Damage Mechanism of RC Double-Column Pier Structure with Triple Coupling Beams

IF 1.8 4区工程技术 Q3 ENGINEERING, CIVIL

International Journal of Civil Engineering Pub Date : 2024-03-18 DOI:10.1007/s40999-024-00945-6

Wenhao Feng, Zhongwen Zhang, Jianxing Sun, Mengyao Ci, Shaojie Wang

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Abstract

Coupling beams are used in double-column high-pier bridges to improve the integrity of the two piers. The stiffness of coupling beams has a significant effect on the seismic performance of double-column piers. The seismic behavior of a double-column pier with triple-coupled beams was investigated by cyclic loading test. The failure mode and cyclic response, as well as the shear deformation of a double-column bridge pier, were analyzed to investigate its seismic behavior. The test results, especially after a drift ratio of 1/83, indicated the presence of non-uniform damage characteristics between the coupling beams. Finite element models were developed and parametric analysis was carried out after validation. The focus was on the effects of the variable stiffness of the coupling beam along its height. By analyzing the bearing capacity, ductility, and damage of the double-column piers, the upper flexible and lower rigid coupling beam is a more reasonable arrangement principle. The research results can provide a reference for the innovation design ideas of similar bridge piers.

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带三重耦合梁的钢筋混凝土双柱墩结构的抗震性能和破坏机理

联梁用于双柱高墩桥梁，以提高两个桥墩的整体性。耦合梁的刚度对双柱桥墩的抗震性能有很大影响。通过循环加载试验研究了带有三重耦合梁的双柱桥墩的抗震性能。分析了双柱桥墩的破坏模式和周期响应以及剪切变形，以研究其抗震行为。试验结果，尤其是在漂移比为 1/83 之后，表明耦合梁之间存在非均匀破坏特征。开发了有限元模型，并在验证后进行了参数分析。重点是耦合梁沿高度的不同刚度的影响。通过分析双柱墩的承载力、延性和破坏情况，发现上柔下刚的耦合梁是一种较为合理的布置原则。研究成果可为类似桥墩的创新设计思路提供参考。

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来源期刊

International Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

3.90

自引率

5.90%

发文量

审稿时长

15 months

期刊介绍： International Journal of Civil Engineering, The official publication of Iranian Society of Civil Engineering and Iran University of Science and Technology is devoted to original and interdisciplinary, peer-reviewed papers on research related to the broad spectrum of civil engineering with similar emphasis on all topics.The journal provides a forum for the International Civil Engineering Community to present and discuss matters of major interest e.g. new developments in civil regulations, The topics are included but are not necessarily restricted to :- Structures- Geotechnics- Transportation- Environment- Earthquakes- Water Resources- Construction Engineering and Management, and New Materials.