水利学报2025，Vol.56Issue(7)：920-932,13.DOI:10.13243/j.cnki.slxb.20240585
考虑损伤效应的塑性混凝土本构模型构建及数值实现
Development and numerical implementation of a constitutive model for plastic concrete incorporating damage effects
摘要
Abstract
Plastic concrete,a unique material situated between soil and conventional concrete,exhibits hardening characteristics before reaching peak strength.After failure,its deformation phenomena becomes increasingly com-plex,displaying strain-softening effects influenced by confining pressure.To characterize the mechanical properties of plastic concrete,a damage evolution equation is constructed based on indoor triaxial tests.This equation incorpo-rates micro-cracks as the fundamental damage units,utilizing Weibull distribution theory alongside Lemaitre's strain equivalence principle.Additionally,an elastoplastic constitutive model is developed by combining the hardening soil model with a damage evolution equation that accounts for damage effects.The new model is numerically implemented using ABAQUS and its subroutines.Comparative analysis of simulation results with experimental data demonstrates that the new model aligns well with experimental findings,capturing both pre-peak strain hardening characteristics and the post-peak strain softening effects associated with varying confining pressures.The findings indicate that the model accurately characterizes the mechanical behavior of plastic concrete.关键词
塑性混凝土/损伤效应/本构模型/三参数Weibull分布/二次开发Key words
plastic concrete/damage effects/constitutive model/three parameter Weibull distribution/secondary development分类
建筑与水利引用本文复制引用
赛冬拉·马学义,崔溦,江志安,张宝增..考虑损伤效应的塑性混凝土本构模型构建及数值实现[J].水利学报,2025,56(7):920-932,13.基金项目
国家自然科学基金面上项目(52479131) （52479131）
