基于OpenSees的钢筋混凝土柱数值模拟分析  

NUMERICAL SIMULATION ANALYSIS OF REINFORCED CONCRETE COLUMN BASED ON OpenSees

作　　者：张礼 王雪荣 方水宝 ZHANG Li;WANG Xue-rong;FANG Shui-bao(Anhui Lianghuai Constuction Co,Ltd,23088,Hefei,China;Second Exploration Team,Anhui Provincial Bureau of Coal Gelogy 241000,Wuhu,Anhui,China;Anhui Provincial Bureau of Coal Geology,230088,Hefei,China)

机构地区：[1]安徽两淮建设有限责任公司,合肥230088 [2]安徽省煤田地质局第二勘探队,安徽芜湖241000 [3]安徽省煤田地质局,合肥230088

出　　处：《建筑技术》2023年第14期1776-1779,共4页Architecture Technology

摘　　要：为深入研究钢筋混凝土柱的抗震性能,基于已有该类试验基础上,通过改变轴压比、体积配箍率、剪跨比3个参数变化,运用OpenSees有限元软件对单根钢筋混凝土柱进行低周往复加载。由滞回曲线绘制出骨架曲线,研究分析不同参数下试件的延性变化及刚度退化规律;研究结果表明,在低周往复加载下,轴压比越大,柱的延性越小,刚度退化越大;配箍率越大,柱的延性越大,刚度退化越小,变形能力增大;剪跨比越大,柱的延性越大,刚度退化越小,但承载力变小。In order to study the seismic performance of reinforced concrete columns,based on the existing experimental basis,the low-cycle reversed loading of single reinforced concrete column was studied by changing three parameters,axial compression ratio,volume ratio of hoops and shear span ratio,using OpenSees finite element software.The frame curve was drawn from the hysteresis curve,and the elasticity change and stiffness degradation law of specimens under different parameters were studied and analyzed.The results show that under low-cycle reversed loading,the larger the axial compression ratio,the smaller the ductility of the column and the greater the stiffness degradation.The larger the hoop ratio,the greater the ductility of the column,the smaller the stiffness degradation and the larger the deformation capacity.The larger the shear span ratio,the greater the ductility of the column,the smaller the stiffness degradation,but the bearing capacity decreases.

关 键 词：OpenSees软件 钢筋混凝土柱 粘结滑移 滞回曲线 纤维模型 骨架曲线 

分 类 号：TU74[建筑科学—建筑技术科学]