基于Mori-Tanaka法的混凝土强度初步研究  

A preliminary investigation on the concrete strength based on the mori-tanaka method

作　　者：肖建强[1,2,3] 章青[2,3] 夏晓舟[2,3] 

机构地区：[1]南京工程学院建筑工程学院,江苏南京211167 [2]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [3]河海大学力学与材料学院,江苏南京210098

出　　处：《混凝土》2013年第9期18-21,共4页Concrete

基　　金：国家自然科学基金(10972072;51179074;11132003;51108231);江苏省自然科学基金(BK2011690);河海大学水文水资源与水利工程科学国家重点实验室开放研究基金(2011490911)

摘　　要：骨料夹杂形状所带来的对混凝土宏观性质的影响通过Eshelby's方法来计算,基于等效夹杂理论,骨料夹杂对水泥沙浆所引起的干扰应力用本征应力表示,运用Mori-Tanaka方法推导出了骨料和水泥沙浆压缩强度与混凝土压缩强度的关系表达式,研究发现当骨料体积百分比的增加时,混凝土和基体压缩强度比及混凝土和骨料压缩比随着增加,最后通过理论分析结果和试验数据比较证明了理论模型有效性。The effect of the aggregate inclusion shape on the macroscopic properties of concrete could be evaluated by introducing Es- helby＇s method.Based on the epuivalent inclusion method,disturbnce stress due to aggregate acting on molar can be expressed by eigen- stress.The relation expression of the compression strength of aggregate and motar with the compression strength of concrete are performed by Mori-Takaka method.The results showed that when the aggregate volume fraction increases,the concrete and matrix compression strength ratio and the concrete and inclusion compression strength ratio also increase.Final, the comparisons result between analytical com- pressive strength and experimental data of concrete reveals that the theoretical strength model is proved to he valid.

关 键 词：混凝土 强度 本征应力 等效夹杂 

分 类 号：TU528.01[建筑科学—建筑技术科学]