水利学报2016，Vol.47Issue(2)：209-218,10.DOI:10.13243/j.cnki.slxb.20150634
钢筋混凝土柱轴心受压性能及尺寸效应的细观数值研究
Mesoscopic simulation of the mechanical properties and the size effect of reinforced concrete column subjected to axial compressive loading
摘要
Abstract
The size effect behavior of reinforced concrete (RC) components is caused mainly by 1) the het⁃erogeneity of concrete itself,and 2) the complex mutual effects between concrete and steel rebar. Consider⁃ing of the mesoscopic heterogeneity, it is assumed that the steel rebar and concrete is well bonded. A se⁃ries of meso-scale mechanical analysis models of RC columns subjected to axial compressive loading are set up. First, the mechanical parameters of the meso components are confirmed by an inversion method based on the simulation of compressive mechanical properties test of a concrete specimen. Then, the dam⁃age process of RC column subjected to axial compressive loading is simulated at macro- and meso-scale. The size effect of the nominal compressive strength of RC components is discussed. The mesoscopic simula⁃tion results of this work follows closely the test results. The rationality of the established mesoscopic analy⁃sis method for the research of size effect of RC components has been verified.关键词
钢筋混凝土柱/尺寸效应/非均质性/钢筋/混凝土相互作用/细观力学模型Key words
RC column/Size effect/Heterogeneity/Mutual effect/Mesoscopic mechanical model分类
土木建筑引用本文复制引用
李冬,金浏,杜修力..钢筋混凝土柱轴心受压性能及尺寸效应的细观数值研究[J].水利学报,2016,47(2):209-218,10.基金项目
973计划项目（2011CB013600）；国家自然科学基金创新研究群体项目 （）
