基于纤维模型的强约束RC柱抗震性能数值模拟

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• 英文论文题名：Numerical simulation analysis of strong constraint column based on fiber model
• 论文作者：张微敬 ; 赵立苋
• 英文论文作者：Zhang Weijing ; Zhao Lixian ; Beijing University of Technology
• 年：2016
• 作者机构：北京工业大学;
• 论文关键词：强约束RC柱 ; 抗震性能 ; 数值模拟 ; 纤维模型
• 英文论文关键词：Reinforced concrete columns with strong confinement ; Seismic performance ; Numerical simulation ; Fiber model
• 会议召开时间：2016-10-27
• 会议录名称：第九届全国防震减灾工程学术研讨会论文集
• 语种：中文
• 分类号：TU352.11;TU375.3
• 学会代码：OGTY
• 会议名称：第九届全国防震减灾工程学术研讨会
• 会议地点：中国安徽合肥
• 主办单位：中国土木工程学会、中国工程院土木、水利与建筑工程学部、中国土木工程学会防震减灾工程技术推广委员会、合肥工业大学、安徽省住房和城乡建设厅
• 学会名称：中国土木工程学会
• 页数：10
• 文件大小：419k
• 原文格式：O
• 会议级别：全国

摘要

采用OpenSEES程序,对6个强约束RC柱试件低周反复加载试验的全过程进行了非线性数值模拟,并分析了轴压比、配筋率、剪跨比对强约束RC柱抗震性能的影响。分析结果表明:OpenSEES程序的纤维模型能较好地模拟强约束RC柱的滞回曲线和骨架曲线,并能够反映构件在反复加载过程中强度、刚度的退化及耗能;增大轴压比,构件延性降低;增大配筋率,可提高构件水平承载力;大剪跨比的构件变形能力好,但承载力低。
Nonlinear numerical simulation on the low cycled reversed loading experiment of six reinforced concrete columns with strong confinement using the fiber model of OpenSEES was carried out and the influence of axial compression ratio,longitudinal reinforcement ratio and shear span ratio on seismic performance of the column were discussed.It is shown that the fiber model of OpenSEES can be efficiently used to simulate the hysteresis curves and skeleton curves of reinforced concrete columns with strong confinement,and can also reflect the degradation of strength and stiffness and energy dissipation of specimens in the cycling loading process.It is found that the ductility of specimens decreases with the increase of axial compression ratio,and the lateral bearing capacity of columns increases with the increase of the longitudinal reinforcement ratio,and the increase of shear span ratio can improve the deformability of specimens,but lower the lateral bearing capacity.

引文

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