摘要
本文对定侧压情况下混凝土二轴受压的变形特性进行了试验研究,在单调加载和重复加载的过程中量测了试件的应力-应变关系曲线.通过与比例加载试验结果的对比和分析,明确了混凝土的应变值因应力途径的不同而有很大差异的结论,给出了定侧压情况下混凝土应力-应变关系的计算式.还发现了在定侧压情况下、重复加载时试件恒压方向的残余应变与再加载应变符号相反等现象.
The deformation characteristics of concrete under biaxial compression with constant confined stress arc experimentally investigated in this paper. The stress-strain curves of the concrete specimens are measured under monotonic loading and repeated loading. After analysing and comparing the test results with those under proportional loading, it is concluded that the strains of concrete under different loading paths are considerably different. The stress-strain relationship of concrete under constant confined stress is presented. Further-more, it is discovered that the sign of residual strain in the confined direction is opposite to that of reloading strain under repeated loading with constant confined stress
出处
《土木工程学报》
EI
CSCD
北大核心
1996年第2期28-36,共9页
China Civil Engineering Journal
基金
国家自然科学基金资助项目
