| 灌浆波纹管装配式PC双柱墩双向拟静力试验 |
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| 引用本文： | 夏樟华,余舟扬,葛继平,何永波,林上顺. 灌浆波纹管装配式PC双柱墩双向拟静力试验[J]. 中国公路学报, 2021, 34(1): 93-103. DOI: 10.19721/j.cnki.1001-7372.2021.01.009 |
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| 作者姓名： | 夏樟华 余舟扬 葛继平 何永波 林上顺 |
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| 作者单位： | 1. 福州大学土木工程学院, 福建 福州 350108;2. 上海应用技术大学城市建设与安全工程学院, 上海 200235;3. 福建工程学院福建省土木工程新技术与信息化重点实验室, 福建 福州 350118 |
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| 基金项目： | 国家自然科学基金项目(51408360);福建省自然科学基金项目(2016J01231,2019J01779,2019H6020)。 |
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| 摘 要： | 为了解双向荷载作用下灌浆波纹管装配式双柱墩的抗震性能,设计和制作了现浇混凝土墩、灌浆波纹管连接和预应力灌浆波纹管混合连接装配式双柱墩构件.开展了装配式双柱墩的双向拟静力试验,研究了破坏模式、滞回特性、骨架曲线、刚度退化、残余位移和接缝张开规律等,并与现浇混凝土双柱墩墩进行比较,重点分析了灌浆波纹管连接装配式预应力混凝土...
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| 关 键 词： | 桥梁工程 抗震性能 双向拟静力试验 装配式双柱墩 灌浆波纹管 预应力 |
| 收稿时间： | 2019-08-26 |
Bi-axial Quasi-static Experiment for Assembled Double-column Piers with Grouting Metal Corrugated Pipe and Prestressed Tendons |
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| XIA Zhang-hua,YU Zhou-yang,GE Ji-ping,HE Yong-bo,LIN Shang-shun. Bi-axial Quasi-static Experiment for Assembled Double-column Piers with Grouting Metal Corrugated Pipe and Prestressed Tendons[J]. China Journal of Highway and Transport, 2021, 34(1): 93-103. DOI: 10.19721/j.cnki.1001-7372.2021.01.009 |
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| Authors: | XIA Zhang-hua YU Zhou-yang GE Ji-ping HE Yong-bo LIN Shang-shun |
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| Affiliation: | 1. School of Civil Engineering, Fuzhou University, Fuzhou 350108, Fujian, China;2. School of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai 200235, China;3. Fujian Provincial Key Laboratory of Advanced Technology and Information in Civil Engineering, Fujian University of Technology, Fuzhou 350118, Fujian, China |
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| Abstract: | To investigate the seismic performance of grouting metal corrugated pipe( GCP)-assembled concrete double-column piers under biaxial loads,three test specimens,including the cast-in-place( CIP),GCP and prestressed GCP( PGCP) piers,were designed and fabricated. Bi-axial quasi-static tests were conducted to study the failure modes,hysteretic characteristics,skeleton curves,stiffness degradation,residual displacement,and joint opening rules for the GCP and PGCP piers,and compared with those of the CIP pier. The analysis on the displacement ductility and deformation capacity of the PGCP pier was emphasized. The results show that the bending failure fails to dominate the CIP and GCP specimens,and the prestressed force increases the axial load and damage degree,thereby increasing the crashed concrete height of the PGCP pier to 15 cm in contrast to that of the GCP pier( 10 cm). Under the bidirectional load,the energy dissipation and ultimate bearing capacities and stiffness of the CIP pier are higher than those of the GCP pier. After adding prestressed tendons,the bearing capacity,stiffness,and deformation capacity of the PGCP pier in the strong axis direction are approximately equal to those of the CIP pier. The bearing capacity of the PGCP pier reaches 97. 9% of that of the CIP pier. The displacement ductility coefficient( 4. 79) of the PGCP is higher than that of the CIP pier( 3. 23). The residual displacement of the PGCP pier decreases to 70% of that of the CIP pier. Furthermore,the displacement ductility and ultimate deformation capacity of the PGCP pier in two directions are almost similar,indicating that the full plastic hinge mechanism in two directions can be formed to avoid early failure in one direction,and the overall seismic performance of the PGCP pier is significantly improved.The results can provide an experimental basis for the design and application of the PGCP pier. |
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| Keywords: | bridge engineering seismic performance bi-axial quasi-static test assembled double-column pier grouting metal corrugated pipe prestressing |
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