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循环荷载下MCFT混凝土结构模型

DOI: 10.13197/j.eeev.2015.03.73.fangzh.009, PP. 73-78

Keywords: 混凝土结构,循环荷载,ABAQUS,修正压力场理论,数值分析

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Abstract:

本文将单调荷载下MCFT模型发展到循环荷载并开发到通用有限元软件ABAQUS上,循环荷载下的MCFT模型是由单调荷载下的混凝土拉压曲线结合本文设定的混凝土加载卸载路径而成,编制的ABAQUS程序可以分析钢筋混凝土平面应力结构受循环荷载作用的非线性性能。通过柱、梁、剪力墙以及框架边、内节点实例分析,验证本文编制的程序对多种类型的结构分析都具有有效性。得出的主要结论是本文编制的程序可以准确计算循环荷载作用下钢筋混凝土结构的极限承载能力,数值分析的滞回曲线能很好地模拟出试验曲线的捏拢效果,表明本文方法对ABAQUS自带模型的改进是明显的。

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