应变率对混凝土动态强度性能影响的研究进展

Research Progress of Strain rate on Dynamic Strength Properties of Concrete

综述应变率对混凝土动态强度性能的影响的试验研究进展情况,对目前国内外已开展的主要的混凝土动态特性实验研究成果进行分类说明与评述,包括单轴抗压动态加载、定侧压动态加载、双轴等比例动态加载、有初始静载的动态加载、单轴拉伸动态加载、有侧压的劈拉试验、循环荷载作用下的拉伸试验以及考虑温度和湿度影响的动态加载试验。指出目前试验研究工作存在的问题,展望未来的发展趋势。对混凝土动态特性的研究今后仍将是本学科领域的一个热点。

This paper gives an overview of the experimental study progress of the effect of strain rate on dynamic strength properties of concrete, and provides a classified introduction and commentary on main research results of the dynamic strength properties of concrete at home and abroad recently, including uniaxial compressive dynamic loading, dynamic loading with lateral pressure, dynamic compressive properties under biaxial equal proportion loading, dynamic loading with initial static load, dynamic uniaxial tensile loading, splitting tensile test with lateral pressure, the tensile test under cyclic loading and the dynamic loading test under the influence of temperature and humidity. It points out that the problems of current research work and deveiopment trend in prospect： the study of dynamic properties of concrete will continue to be the research focus in the future.