论文标题：Seismic performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite connections

期刊：Frontiers of Structural and Civil Engineering

作者：Jin WANG , Weibing XU , Xiuli DU , Yanjiang CHEN, Mengjia DING , Rong FANG , Guang YANG

发表时间：15 Jun 2023

DOI：10.1007/s11709-023-0954-1

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爱思唯尔2024中国高被引作者

杜修力

中国工程院院士

北京工业大学

引用格式

Jin WANG, Weibing XU, Xiuli DU, Yanjiang CHEN, Mengjia DING, Rong FANG, Guang YANG. Seismic performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite connections. Front. Struct. Civ. Eng., 2023, 17(6): 827–854 https://doi.org/10.1007/s11709-023-0954-1

摘要

全装配式桥梁的抗震性能是限制其应用的关键因素。本研究建立并验证了采用灌浆套筒-预应力筋复合连接的装配式混凝土桥墩纤维单元模型。对三种不同桥墩的连续梁桥进行了数值分析，分别为现浇钢筋混凝土桥墩、灌浆套筒装配式桥墩和灌浆套筒-预应力筋复合装配式桥墩。此外，还研究了复合装配式桥墩的抗震性能。结果表明，OpenSees纤维单元模型能够成功模拟灌浆套筒装配式桥墩的滞回性能和破坏模式。在传统非近场地震动作用下，灌浆套筒装配式桥墩和复合装配式桥墩的墩顶位移均小于现浇钢筋混凝土桥墩。复合装配式桥墩具有良好的自复位能力。此外，灌浆套筒装配式桥墩和复合装配式桥墩的塑性铰区分别转移至接缝处和灌浆套筒上边缘。具有优化设计参数的复合装配式桥墩具有良好的抗震性能，可应用于高烈度地震区；但不应忽视桩土相互作用对其抗震性能的影响。

试件的测量点：（a）钢筋的应变;（b）混凝土的应变;（c）桥墩的位移和曲率;（d）测试模型的布局

Abstract

The seismic performance of a fully fabricated bridge is a key factor limiting its application. In this study, a fiber element model of a fabricated concrete pier with grouting sleeve-prestressed tendon composite connections was built and verified. A numerical analysis of three types of continuous girder bridges was conducted with different piers: a cast-in-place reinforced concrete pier, a grouting sleeve-fabricated pier, and a grouting sleeve-prestressed tendon composite fabricated pier. Furthermore, the seismic performance of the composite fabricated pier was investigated. The results show that the OpenSees fiber element model can successfully simulate the hysteresis behavior and failure mode of the grouted sleeve-fabricated pier. Under traditional non-near-fault ground motions, the pier top displacements of the grouting sleeve-fabricated pier and the composite fabricated pier were less than those of the cast-in-place reinforced concrete pier. The composite fabricated pier had a good self-centering capability. In addition, the plastic hinge zones of the grouting sleeve-fabricated pier and the composite fabricated pier shifted to the joint seam and upper edge of the grouting sleeve, respectively. The composite fabricated pier with optimal design parameters has good seismic performance and can be applied in high-intensity seismic areas; however, the influence of pile-soil interaction on its seismic performance should not be ignored.

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