| 水平双向反复荷载作用下RC矩形空心桥墩的滞回模型研究 |
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| 引用本文： | 董振华, 杜修力, 韩强. 水平双向反复荷载作用下RC矩形空心桥墩的滞回模型研究[J]. 工程力学, 2016, 33(4): 24-33. DOI: 10.6052/j.issn.1000-4750.2014.10.0905 |
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| 作者姓名： | 董振华 杜修力 韩强 |
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| 作者单位： | 1.北京工业大学城市与工程安全减灾教育部重点实验室, 北京 100124;;2.交通运输部公路科学研究院, 北京 100088 |
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| 基金项目： | 国家973项目(2011CB013602);北京市教育基金项目(KZ201410005011);国家自然科学基金项目(51178008) |
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| 摘 要： | 为了评价复杂地震荷载作用下钢筋混凝土(RC)空心桥墩的抗震性能,对3根RC矩形空心桥墩进行了
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| 关 键 词： | 桥墩 滞回模型 数值模拟 拟静力试验 矩形空心截面 |
| 收稿时间： | 2014-10-28 |
| 修稿时间： | 2015-08-13 |
STUDY ON HYSTERETIC MODEL OF RC BRIDGE PIER WITH RECTANGULAR HOLLOW SECTION UNDER LATERAL-BIRECTIONAL CYCLIC LOAD |
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| DONG Zhen-hua, DU Xiu-li, HAN Qiang. STUDY ON HYSTERETIC MODEL OF RC BRIDGE PIER WITH RECTANGULAR HOLLOW SECTION UNDER LATERAL-BIRECTIONAL CYCLIC LOAD[J]. Engineering Mechanics, 2016, 33(4): 24-33. DOI: 10.6052/j.issn.1000-4750.2014.10.0905 |
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| Authors: | DONG Zhen-hua DU Xiu-li HAN Qiang |
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| Affiliation: | 1.Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China;;2.Highway Engineering Research Center, Research Institute of Highway Ministry of Transport, Beijing 100088, China |
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| Abstract: | In order to estimate seismic performance of RC (reinforced concrete) bridge piers with hollow sections under composite earthquake loads, quasi-static testing was carried out on three RC rectangular hollow bridge piers under bidirectional cyclic load with a spiral shape loading protocol. Using finite element numerical analysis, the lateral displacement-force curves and curvature-moment curves of specimens were studied. The parameters considered were axial-compression ratio, wall thickness, and bi-axial bending strength ratio. By analyzing the effect of these parameters on the hysteretic behaviors of specimens, failure characteristics, and section performance, a new lateral displacement-force hysteretic curve model under bidirectional cyclic load with a spiral shape loading protocol was proposed. In the new hysteretic model, the coupling effect on strength, stiffness, and displacement under lateral bidirectional load was referenced. Then the proposed model was further used to obtain calculated lateral displacement-force curves, which agree well with experimental results. |
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| Keywords: | bridge pier hysteretic model numerical simulation quasi-static experiment rectangular hollow section |
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