聚丙烯纤维再生混凝土损伤本构模型的研究  

Damage Constitutive Models of Polypropylene Fiber Recycled Concrete

作　　者：张婷[1] 黄炜[1] 戎翀 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《材料导报》2015年第22期150-155,共6页Materials Reports

基　　金：国家自然科学基金(50908188;51178385);国家"十二五"科技支撑项目(2012BAJ16B02);教育部长江学者和创新团队发展计划(IRT13089)

摘　　要：基于Weibull统计分布理论和Lemaitre等效应变假定原理,推导出聚丙烯纤维再生混凝土单轴受压损伤本构模型,对聚丙烯纤维再生混凝土进行单轴受压试验,根据试验数据,确定了该模型参数,通过试验曲线和模型曲线的对比分析发现两者拟合较好。基于考虑中间主应力、拉压性能影响的适用于任何材料的统一强度理论,推导出聚丙烯纤维再生混凝土的双剪损伤本构模型,建立了纤维混凝土损伤本构模型从单轴到双轴的转化方法。Naxial damage constitutive model of polypropylene fiber recycled concrete based on the Weibull statistical distributing theory and the hypothesis of the equivalence of strain of Lemaitre. Parameters of the model were offered by test datas, and the model curve were presented. Compared with test curve, the fitting is well. Double shear damage constitutive model was presented based on unified strength theory which is considered middle principal stress and is suitable for any material. And method which transforms uiaxial damage constitutive to double shear damage constitutive model was established.

关 键 词：聚丙烯纤维再生混凝土 统一强度理论 单轴受压损伤本构模型 双剪损伤本构模型 

分 类 号：TU502[建筑科学—建筑技术科学]