| 摇摆-自复位桥墩的多弹簧模型建模方法研究 |
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| 引用本文： | 钟正午,石岩,秦洪果,成昭,张胶玲.摇摆-自复位桥墩的多弹簧模型建模方法研究[J].世界地震工程,2021,0(4):197-205. |
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| 作者姓名： | 钟正午 石岩 秦洪果 成昭 张胶玲 |
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| 作者单位： | 兰州理工大学 土木工程学院, 甘肃 兰州 730050 |
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| 摘 要： | 为探讨摇摆-自复位（Rocking Self-Centering，RSC）桥墩的滞回行为并为其数值建模提供依据，基于OpenSees地震分析平台发展此类结构的多弹簧模型并开展系统性讨论。结合RSC桥墩的构造特点发展多弹簧模型的整体建模思路，着重对比三种弹簧分布（基于Gauss积分和Lobatto积分的分布及均匀分布）模式下RSC桥墩的整体力-位移响应，对弹簧所需设置个数进行优化分析，并讨论了弹簧刚度的校准过程。最后，基于现有研究的5个RSC桥墩试件的试验结果，通过对比滞回曲线，发现所建议的模拟方法可较为准确地模拟RSC桥墩在拟静力荷载下的刚度、强度、滞回行为及残余位移。
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| 关 键 词： | 摇摆-自复位桥墩 多弹簧模型 模拟方法 OpenSees |
Simulation method for multi-spring model of rocking self-centering pier |
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| ZHONG Zhengwu,SHI Yan,QIN Hongguo,CHENG Zhao,ZHANG Jiaoling.Simulation method for multi-spring model of rocking self-centering pier[J].World Information On Earthquake Engineering,2021,0(4):197-205. |
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| Authors: | ZHONG Zhengwu SHI Yan QIN Hongguo CHENG Zhao ZHANG Jiaoling |
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| Affiliation: | School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | To explore the seismic performance of rocking self-centering (RSC) pier, a systematic study on the multi-spring model of RSC pier was carried out in this paper, expecting to provide the basis forsimulation.According to the structural feature of RSC pier, the numerical modeling method for multi-spring model was developed, the force-displacement relation of RSC pier with three different distribution schemes including the Gauss-Integration, Lobatto-Integration distribution and uniform distributionwas compared, the required minimum number of springs was analyzed, and the calibration process of the spring stiffness was discussed. Finally, by comparing the simulation and test results of 5 RSC pierspecimens, it can be found that the proposed modeling strategy was able to simulate the stiffness, strength, hysteretic behavior and resident displacement of RSC pier under the cyclic load. |
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| Keywords: | self-centering pier multi-spring model simulation method OpenSees |
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