| 基于FENAP平台的RC高桥墩破坏过程模拟及分析 |
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| 引用本文： | 禚一,李忠献. 基于FENAP平台的RC高桥墩破坏过程模拟及分析[J]. 地震工程与工程振动, 2010, 30(4) |
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| 作者姓名： | 禚一 李忠献 |
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| 作者单位： | 天津大学,建筑工程学院/滨海土木工程结构与安全教育部重点实验室(天津大学),天津300072;天津大学,建筑工程学院/滨海土木工程结构与安全教育部重点实验室(天津大学),天津300072 |
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| 基金项目： | 国家自然科学基金重大研究计划重点支持项目,重大国际合作项目 |
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| 摘 要： | 为精细模拟钢筋混凝土高桥墩在静力推覆荷载作用下的破坏过程,本文基于钢筋混凝土精细化纤维梁柱单元模型分析平台FENAP,对一实际的西部山区空心截面高桥墩进行了Pushover分析,通过对构件、截面和纤维层次的力-位移关系曲线分析,模拟了桥墩从墩底混凝土开裂、纵筋屈服到受压区混凝土压碎的完整破坏过程。并将FENAP平台与OpenSees计算结果进行对比,结果表明,FE-NAP平台可有效地模拟高墩在静力推覆荷载下的破坏过程和软化行为,具有较高的求解精度。进一步比较了不同轴压比、是否考虑约束混凝土效应及纵筋屈曲效应等因素对分析结果的影响,得出结论,轴压比和约束混凝土效应对高桥墩的破坏过程发展有较大影响,而纵筋屈曲效应影响较小,可忽略不计。
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| 关 键 词： | 钢筋混凝土桥梁 高桥墩 纤维模型 Pushover分析 破坏过程 模拟平台 |
Simulation and analysis of damage process of RC high bridge piers based on FENAP platform |
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| ZHUO Yi,LI Zhongxian. Simulation and analysis of damage process of RC high bridge piers based on FENAP platform[J]. Earthquake Engineering and Engineering Vibration, 2010, 30(4) |
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| Authors: | ZHUO Yi LI Zhongxian |
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| Affiliation: | ZHUO Yi,LI Zhongxian(School of Civil Engineering,Tianjin University/Key Laboratory of Coast Civil Structure Safety(Tianjin University),Ministry of Education,Tianjin 300072,China) |
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| Abstract: | In order to simulate the damage process of RC high bridge piers under static pushover loading,on the basis of the simulation analysis platform FENAP of RC fiber beam-column element,a practical high pier of mountain hollow bridge has been modeled and analyzed by using pushover analysis procedure.The complete damage process from concrete crack at the bottom of the pier to buckling of reinforcement to concrete crush at the compression zone is simulated according to the analysis of the force-displacement curve ... |
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| Keywords: | RC bridge high bridge pier fiber model pushover analysis damage process simulation platform |
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