基于软化膜模型的开发及其在钢板混凝土中的应用  

User subroutine for nonlinear analysis of steel-plate concrete composite structure based on softened membrane model

作　　者：李乐[1] 宋晓冰[1] 陈思佳[1] LI Le;SONG Xiaobing;CHEN Sijia(Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上海交通大学,上海200240

出　　处：《混凝土》2021年第4期129-135,共7页Concrete

基　　金：国家科技重大专项课题“CAP1400关键设计技术研究”(2011ZX06002-001)。

摘　　要：通用有限元程序的二次开发,可以较好地弥补现有钢板混凝土数值分析方法的不足。在对比分析钢板混凝土与钢筋混凝土的基础上,建立了适用于钢板混凝土的软化膜模型,并将建立的模型通过UMAT用户子程序嵌入通用有限元程序ABAQUS。在针对钢板混凝土双向拉压试验的数值分析中,计算结果与试验结果取得了较好的一致性,表明该方法具备较强的准确性和通用性,为分析和设计复合荷载下的钢板混凝土结构提供了有效手段。The shortcomings of the existing finite element methods for steel-plate concrete(SC)can be overcome by development of FE package.Based on the comparison of steel-plate concrete and reinforced concrete,the traditional softened membrane model has been improved and incorporated into the ABAQUS by UMAT user subroutine.The numerical analysis complies with the experimental results in the modeling of biaxial loading tests of SC panels,indicating that the method has good accuracy and general applicability,which provides an effective method for analyzing and designing SC composite structures under various loads.

关 键 词：钢板混凝土组合结构 软化膜模型 用户子程序 

分 类 号：TU528.01[建筑科学—建筑技术科学]