第33卷第5期 2016年9月
土木工程与管理学报 Journal of Civil Engineering and Management
Vol.33 No.5 Sep.2016
基于OpenSees 的RC柱拟静力数值分析模型
卜海峰，胡思康？，张耀庭1，童康1，叶宏伟（1.华中科技大学土木工程与力学学院，湖北武汉430074； 2.武汉大学土木建筑工程学院，湖北武汉430070）
摘要：本文以OpenSees为分析平台，对等位移加载的拟静力试验钢筋混凝土柱进行数值分析。考虑钢筋与混凝土材料本构的选取与搭配、纤维划分、单元划分、积分点数的不同对数值模拟带来的影响，建立合理有效的数值分析模型。分析结果表明：在OpenSees中，选用不同钢筋与混凝土本构模型进行模拟时，计算结果差别较大，且采用不同钢筋与混凝土材料本构进行搭配建模时，对数值模拟的结果也有较大影响；对于钢筋本构， Steel02、ReinforcingSteel模拟效果比Steel01好，且二者分别适应不同的混凝土本构；对于混凝土本构，Con-erete01模拟效果最好：纤维截面划分形式对模拟结果有较大影响，平行于作用力方向划分m=1，垂直于作用力方向划分n=10即可满足精度要求；单元数量对模拟结果有一定影响，划分5个已能达较好精度；单元积分点数对模拟结果影响不大，单元取4个积分点时，模型的计算精度已经很高。
关键词：钢筋混凝土柱拟静力试验：OpenSees：本构模型：纤维模型；单元积分点数
中图分类号：TU375.3
文献标识码：A文章编号：2095-0985（2016)05-0021-07
NumericalAnalysisModelforPseudo-staticRCColumnsBased on OpenSees
BU Hai-feng,HU Si-kang,ZAHNG Yao-ting,TONG Kang',YE Hong-wei
(1. School of Civil Engineering and Mechanics ,Huazhong University of Science and Technology, Wuhan 430074, China; 2. School of Civil Engineering, Wuhan University, Wuhan 430070, China)
Abstract : The reinforced concrete column in equal displacement loading quasi-static test was analyzed by OpenSees. Considering the effects of different steel and concrete constitutive selection and match, fiber division, element division, integration points on numerical simulation, a reasonable and effective numerical model was made. The results indicate that: in OpenSees, the results vary greatly when selecting different steel and concrete constitutive models to simulate. Matching different steel and concrete constitutive models also have a greate effect on numerical simulation results; for steel constitutive, Steel02 and ReinforcingSteel simulation results are better than SteelO1, and they matches different concrete constitutive; for concrete constitutive, Concreteo1 simulates best; the form of fiber cross-sectional division has a great impact on the simulation results. When the fiber is divided m = 1 parallel to the direction of force , n = 10 perpendicular to the direction of force,the result can meet the precision requirement; the number of elements has some influence on the simulation results, 5 elements can achieve the precision; integration points have little effect on the simulation results, when a element has 4 integration points, the calculation precision of the model is already high.
Key words: quasi-static tests of reinforced concrete column; OpenSees; constitutive model; fiber
model; number of element integration
目前，国内外在钢筋混凝土结构抗震研究上已经取得了较多成果[！]，合理精确地模拟结构在
收稿日期：2016-03-07修回日期：2016-05-15
地震作用下复杂的非线性行为表现，是研究结构在地震作用下损伤和破坏机理的关键[2]，有关结
作者简介：卜海峰（1993-），男，湖北随州人，研究方向为结构工程（Email:U201315546@hust.edu.cn）
通讯作者：张耀庭（1965-），男，湖北红安人，博士，教授，研究方向为钢筋混凝土结构抗震减震（Email:zyt1965@hust.edu.cn）基金项两：数据然科学基金（51278218）：华中科技大学大学生创新创业训练计划项目（2015008）