混凝土细观分析的研究现状

Review on micromechanical analysis of concrete

介绍了混凝土细观力学分析方法,即混凝土数值模拟和CT试验研究,数值模拟详细分析讨论了随机骨料模型、格构模型、随机力学特性模型、统计细观损伤力学模型、离散元模型等5种细观力学数值模型的特点以及高性能并行计算作用及实现。考虑到国内医用CT试验只能进行一级配混凝土试件拉、压破坏试验,对二级配混凝土只能进行拉伸破坏试验,因此对多级配混凝土进行细观分析,必须与工业CT结合,将可以完成拉伸、压缩、动力试验,为混凝土的细观研究提供了另一条路径。

The paper presented the micromechanical analysis of concrete namely the current state of studies on numerical simulation and CT tests of concrete.Five micromechanical numerical models were introduced：random aggregate model,lattice model,random property model, meso-damage mechanical model and discrete element model;And the effect and implementation of high performance parallel computing were also summarized.Considering that current CT tests can only be used to perform tensile and compressive failure for one graded concrete samples and tensile failure for two graded concrete samples,it＇s better to conduct tensile, compressive and dynamic experiments with industrial CT tests so as to provide a new approach to the research of micromechanical analysis of concrete.