超高性能混凝土单轴受压应力-应变关系研究  

Research on stress-strain relation of ultra high performance concrete

作　　者：杨剑[1] 方志[2] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075 [2]湖南大学土木工程学院,湖南长沙410075

出　　处：《混凝土》2008年第7期11-15,共5页Concrete

基　　金：国家自然科学基金资助项目(50478502)

摘　　要：采用刚性辅助架法获得了稳定的超高性能混凝土(Ultra-High Performance Concretes,UHPC)的受压应力-应变全曲线。试验结果表明UHPC具有良好的受压变形性能;重复加载下UHPC的包络线与单调加载时的应力-应变曲线基本相同。基于试验结果建立了UHPC单轴受压本构方程,以及重复荷载作用下UHPC应力-应变全曲线方程,其结果与试验结果吻合较好。The complete stress-strain curve of UHPC was obtained by a simple a simple experimental technique.It is shown that UHPC was of good deformation capacity,and the envelope curve of UHPC under cyclic loading is similar with the curve of UHPC under uniaxial loading. Stress-strain relationship of UHPC in compression under uniaxial load and cyclic load were proposed based on the experimental results, and the predicted curves agree with the tested curves well.

关 键 词：超高性能混凝土(UHPC) 应力-应变 全曲线 

分 类 号：TU528.01[建筑科学—建筑技术科学]