基于OpenSEES的钢筋混凝土柱拟静力分析
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摘要
为了研究OpenSEES软件中材料本构模型参数、轴压比和配箍率对钢筋混凝土柱数值模拟的影响,采用OpenSEES软件中非线性纤维单元对4根以弯曲破坏为主的钢筋混凝土柱的拟静力试验进行数值模拟,并与试验数据进行了对比分析.结果表明,对拟静力试验中钢筋混凝土柱进行数值模拟应考虑P-Δ效应,Concrete02材料λ参数值建议取0. 1～0. 2,钢筋强化系数可不考虑或仅需设置0～0. 01的较小强化系数值;高配箍率钢筋混凝土柱抗震性能较好,具有良好的延性能力.
In order to study the influence of the parameters for material constitutive model in the OpenSEES software,axial compression ratio and stirrup ratio on the numerical simulation of reinforced concrete( RC)columns,the pseudo-static tests of 4 RC columns mainly exhibiting bending failure were simulated with the nonlinear fiber element in the OpenSEES software,and the simulation results were compared with the experimental data. The results showthat when the RC columns are simulated in the pseudo-static tests,the P-Δ effect should be taken into account,the λ parameters should be 0. 1 to 0. 2 for Concrete02 material,and the reinforcement strengthening factor could be neglected or be set as a smaller value in the range from 0 to0. 01. The RC columns with high stirrup ratio have good anti-seismic performance and ductility capacity.
In order to study the influence of the parameters for material constitutive model in the OpenSEES software,axial compression ratio and stirrup ratio on the numerical simulation of reinforced concrete( RC)columns,the pseudo-static tests of 4 RC columns mainly exhibiting bending failure were simulated with the nonlinear fiber element in the OpenSEES software,and the simulation results were compared with the experimental data. The results showthat when the RC columns are simulated in the pseudo-static tests,the P-Δ effect should be taken into account,the λ parameters should be 0. 1 to 0. 2 for Concrete02 material,and the reinforcement strengthening factor could be neglected or be set as a smaller value in the range from 0 to0. 01. The RC columns with high stirrup ratio have good anti-seismic performance and ductility capacity.
引文
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[2]张行,张谢东.钢筋混凝土柱拟静力试验数值模拟分析[J].工程抗震与加固改造,2013,35(5):30-35.(ZHANG Xing,ZHANG Xie-dong.Numerical analysis of pseudo-static tests of RC columns[J].Earthquake Resistant Engineering and Retrofitting,2013,35(5):30-35.)
[3]孙广俊,蒋雯,李鸿晶.循环荷载下钢筋混凝土柱滞回性能数值模拟[J].震动、测试与诊断,2013,33(2):241-246.(SUN Guang-jun,JIANG Wen,LI Hong-jing.Numerical simulation on hysteretic behaviors of reinforced concrete column under cyclic load[J].Journal of Vibration,M easurement&Diagnosis,2013,33(2):241-246.)
[4]陆新征,叶列平,潘鹏,等.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅱ:关键构件试验[J].建筑结构,2012,42(11):23-27.(LU Xin-zheng,YE Lie-ping,PAN Peng,et al.Pseudostatic collapse experiments and numerical prediction competition of RC frame structureⅡ:key elements experiment[J].Building Structure,2012,42(11):23-27.)
[5]Yassin M Y M.Nonlinear analysis of prestressed concrete structures under monotonic and cyclic loads[D].California:University of California,Berkeley,1994.
[6]张紫薇,夏静,傅剑平.混凝土本构模型对柱受力性能影响的数值模拟分析[J].四川建筑科学研究,2015,41(1):21-25.(ZHANG Zi-wei,XIA Jing,FU Jian-ping.Numerical simulation analysis of the effect of concrete constitutive model on mechanical behavior of columns[J].Sichuan Building Science,2015,41(1):21-25.)
[7]孙治国,华承俊,靳建楠,等.基于OpenSEES的钢筋混凝土桥墩抗震数值分析模型[J].世界地震工程,2016(1):266-276.(SUN Zhi-guo,HUA Cheng-jun,JIN Jian-nan,et al.Numerical seismic analysis model for reinforced concrete bridge piers based on OpenSEES[J].World Earthquake Engineering,2016(1):266-276.)
[8]王强,尹镇平,高翔,等.基于离散单元法的钢筋混凝土框架非线性分析[J].沈阳工业大学学报,2015,37(3):347-354.(WANG Qiang,YIN Zhen-ping,GAO Xiang,et al.Nonlinear analysis for RC frame structures based on discrete element method[J].Journal of Shenyang University of Technology,2015,37(3):347-354.)
[9]王涛,孙严,孟丽岩.基于OpenSEES的RC柱拟静力实验数值分析[J].黑龙江科技大学学报,2016,26(1):89-94.(WANG Tao,SUN Yan,MENG Li-yan.OpenSEES-based on numerical analysis of quasi-static test of reinforced concrete column[J].Journal of Heilongjiang University of Science&Technology,2016,26(1):89-94.)
[10]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001.(FAN Li-chu,ZHUO Wei-dong.Ductility seismic design of bridge[M].Beijing:China Communications Press,2001.)