| 基于OpenSees的CFRP加固RC短柱抗震性能数值模拟 |
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| 引用本文： | 王瑾,蔡新江,田石柱.基于OpenSees的CFRP加固RC短柱抗震性能数值模拟[J].世界地震工程,2009,25(4). |
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| 作者姓名： | 王瑾 蔡新江 田石柱 |
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| 作者单位： | 1. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090
2. 哈尔滨工业大学,土木工程学院,黑龙江,哈尔滨,150090;苏州科技学院,江苏省结构工程重点实验室,江苏,苏州,215011 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 采用地震工程开源模拟软件OpenSees对CFRP加固RC短柱进行了静力Push over分析和低周往复加载分析,并与通用有限元软件ANSYS模拟结果进行对比研究.研究结果表明:利用CFRP进行加固,不仅阻止了RC短柱的脆性剪切破坏,而且使破坏模式转化为延性弯曲破坏,增强了结构延性,进而有效地提高其抗震性能;同ANSYS相比,OpenSees可以宏观的反映CFRP与混凝土共同作用的非线性力学特征,有效地对构件和结构进行加固后的承载力及抗震性能分析.
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| 关 键 词： | 纤维增强材料 非线性有限元 低周往复加载 |
Numerical simulation on seismic behavior of CFRP retrofitted RC short column based on OpenSees |
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| WANG Jin,CAI Xinjiang,TIAN Shizhu.Numerical simulation on seismic behavior of CFRP retrofitted RC short column based on OpenSees[J].World Information On Earthquake Engineering,2009,25(4). |
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| Authors: | WANG Jin CAI Xinjiang TIAN Shizhu |
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| Abstract: | OpenSees software is used to carry out static pushover analysis and low cyclic loading analysis on the CFRP retro-fitted reinforcement concrete short column, and the results are contrasted with the results simulated by ANSYS. The results indicate that retrofitting RC short column with carbon fiber reinforced plastic(CFRP) not only prevent brittle shearing failure of RC short columns, but also change the shearing failure mode to ductile bending failure. The ductility of the RC short column increases a lot and its seismic performance is improved. Compared with ANSYS, OpenSees can generally reflect the nonlinear mechanical properties of interaction between CFRP and concrete, and analysis the supporting capacity and seismic performance of retrofitted structure effectively. |
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| Keywords: | OpenSees pushover OpenSees fiber reinforced plastic nonlinear finite element pushover low cyclic loading |
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