| 受侧向冲击的混凝土墩柱本构模型对比 |
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| 引用本文： | 杨 帅,魏明晖,方从启.受侧向冲击的混凝土墩柱本构模型对比[J].水运工程,2017(12):198-203. |
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| 作者姓名： | 杨 帅 魏明晖 方从启 |
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| 作者单位： | 中交四航工程研究院有限公司,广东 广州 510230;河海大学 力学与材料学院,江苏 南京 210098,中交四航工程研究院有限公司,广东 广州 510230,上海交通大学 船舶海洋与建筑工程学院,上海 200240 |
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| 基金项目： | 国家重点研发计划项目(2017YFC0805303)；国家自然科学基金项目(51178264) |
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| 摘 要： | 采用ANSYS建模和LS-DYNA显式动力分析的方式,分别使用HJC、脆性损伤、盖帽和混凝土损伤等4种混凝土本构模型,对钢筋混凝土墩柱的侧向冲击过程进行仿真。从系统能量的角度验证数值计算的正确性;并将冲击过程中的冲击物块加速度和钢筋应变的历时值与试验值进行对比,进一步证实仿真计算的正确性。从各本构模型的计算结果、模拟所耗费的计算时间以及所需的参数数量等方面进行对比。
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| 关 键 词： | 墩柱 混凝土本构 冲击 HJC本构 脆性损伤本构 盖帽本构 混凝土损伤本构 |
Comparison of concrete constitutive model in lateral impact simulation of pier column |
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| YANG Shuai,WEI Ming-hui and FANG Cong-qi.Comparison of concrete constitutive model in lateral impact simulation of pier column[J].Port & Waterway Engineering,2017(12):198-203. |
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| Authors: | YANG Shuai WEI Ming-hui and FANG Cong-qi |
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| Institution: | CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China;College of Mechanics and Materials,Hohai University,Nanjing 210098,China,CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China and School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China |
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| Abstract: | By modeling of ANSYS and explicit dynamical analysis of LS-DYNA,we simulate the concrete pier columns to lateral impact mass,apply four types of concrete constitutive model on the simulation,such as Johnson Holmquist concrete constitutive model,brittle damage constitutive model,continuous surface cap constitutive model,concrete damage model,etc,and test the accuracy of the simulation calculation by the system energy.The numerical simulation value is compared with the experiment results to further validate the accuracy of the simulation calculation.The concrete constitutive models are compared with prediction accuracy,prediction speed and parameter number. |
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| Keywords: | pier column concrete constitutive model lateral impact Johnson Holmquist concrete constitutive model brittle damage constitutive model continuous surface cap constitutive model concrete damage constitutive model |
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