混凝土结构构件等应力区内裂缝随机性仿真计算方法研究  

Research on simulation calculation method for randomness of cracks within equal stress zone of concrete members

作　　者：刘幸[1] 宗刚[2] 陆伟[1] 刘科辉[1] 沈智锋[1] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]同济大学,上海200092

出　　处：《武汉大学学报（工学版）》2005年第6期85-90,共6页Engineering Journal of Wuhan University

摘　　要：针对混凝土构件材料强度和变形性质的随机性,采用数学方法提出构造混凝土极限拉应变数列的原理.结合钢筋混凝土有限元,建立了混凝土构件等应力区初始裂缝随机性的仿真计算方法,对钢筋混凝土梁纯弯段的裂缝规律进行了仿真计算.算例表明,本方法较好地描述了混凝土材料性质的随机性,计算结果与模型试验和工程实际规律吻合.Considering the randomness of strength and deformation of concrete material, a mathematic approach of producing random variables series of concrete ultimate tensile strain is proposed. And with reinforced concrete finite element a simulation calculation method is founded for randomness of initial cracks within the equal stress zone of concrete members. The calculation example shows that the method can describes the randomness of concrete material satisfactorily and coinsides with the laws of test and engineering.

关 键 词：混凝土构件 等应力区 裂缝 随机性 仿真 

分 类 号：TU37[建筑科学—结构工程]