摘要
本文采用改进的界限面模式为受压混凝土的本构关系,受拉混凝土视为线弹性材料,开裂后的非线性现象用经验公式子以考虑,对钢筋混凝土板作非线性有限元分析。为提高计算精度,本文应用四结点广义协调矩形板弯曲单元推导有限元计算列式,编成计算机程序。算例表明,本文的计算结果与已有的实验结果符合较好。
In this paper, a modified bounding surface model is used as the constitutive law for concrete in compression. The post-cracking behaviour is also considered in the nonlinear analysis of the reinforced concrete slab. A 4-nodes generalized conforming elements are adopted to derive element formulation. An illustrative example shows that the analysis results agree well with the test results observed by others.
关键词
有限元
本构关系
非线性分析
钢筋混凝土板
reinforced concrete,finite element,constitutive law,nonlinear analyais
