冻融循环后混凝土双轴压的试验研究  

Experimental study on concrete behavior under biaxial compression after freezing and thawing cycle

作　　者：宋玉普[1] 覃丽坤[1] 张众[1] 于长江[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《水利学报》2004年第1期95-99,共5页Journal of Hydraulic Engineering

摘　　要：利用大型混凝土静、动三轴试验系统,对经过0、25、50、75次冻融循环的混凝土,进行了5种比例加载路径的双轴压试验,测得了混凝土的强度及两个加载方向的应变,并根据试验结果,系统地探讨了冻融循环后,混凝土在不同比例加载下的双轴受压强度和变形特性。在此基础上,建立了冻融循环后混凝土双轴压的破坏准则,为北方寒冷地区的水坝、混凝土路面等的设计、分析提供了试验及理论依据。The strength and strain in two loading direction of concrete after freezing and thawing cycle are experimentally studied using static and dynamic biaxial compression facility.According to the experiment data the behavior of concrete under the action of compression from two direction with various ratios is analyzed.On this basis the failure criterion of concrete under biaxial compression after freezing and thawing cycle is proposed.

关 键 词：混凝土 冻融循环 双轴压 混凝土强度准则 

分 类 号：TU375[建筑科学—结构工程]