FIBER DAMAGE ANALYSIS MODEL FOR RC BEAM-COLUMN BASED ON CONCRETE DAMAGE CONSTITUTIVE MODEL

摘要：

Firstly,a plastic-damage constitutive model for concrete complying with the laws of thermodynamics is proposed based on continuum damage mechanics theory. The expression of plastic Helmholtz free energy that contains the plasticity and damage is used to describe the plasticity and damage degradation behavior of concrete. The damage constitutive equations,damage evolution equations and plastic deformation of concrete are derived. The results of the proposed model agree well with the experimental data. Secondly,Fiber damage analysis model(FDAM) for RC beam-column member is established by analyzing section of fiber beam column element,which was developed with VUEL subroutine based on ABAQUS/Explicit platform,with the uniaxial damage constitutive relations of concrete proposed in present paper being used. The member damage index is defined,which can describe the nonlinear damage behavior of RC members under any loadings. Accuracy of the model is identified preliminarily by comparing with the analysis results of solid element.

关键词： Concrete damage constitutive model Plastic helmholtz free energy Fiber damage analysis model VUEL

作者: Zuo-Hua Li Jun Teng Xue-Feng He

作者单位: School of Civil Engineering,Dalian University of Technology,Dalian 116024,P.R. China Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518055,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 220-227

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）