非线性空间有限元在钢筋混凝土分析中的应用

Application of Three dimensional Nonlinear Finite Element Method to RC Structures

用非线性空间有限元法分析钢筋砼存所在的问题，包括材料的本构关系、破坏准则及砼开裂、压碎前后的模拟．在这些工作的基础上编制了三维非线性有限元分析程序．作为算例，分析了钢筋砼构件受扭矩等力系作用时的内力和位移．计算表明，理论与实验结果吻合良好．

This paper analyses some problems of reinforced concrete behavior solved by means of nonlinear finite element method, including the concrete material's constitutive equation, failure criterion and imitation of concrete before and after cracking and crushing.A three dimensional nonlinear finite element program is completed. As an example, force and displacement of RC members subjected to torque and other loads are calculated. Calculation shows that good correlation between experimental and analytical results can be obtained.