摘要
为了解双轴受压下混凝土动态力学特性,采用真三轴材料试验机,对边长为300mm的立方体混凝土试件在应变速率为10-5、10-4、10-3s-1下进行双轴动态受压试验,研究了双轴受压下混凝土的抗压强度、弹性模量、峰值应变等力学特性,并与单轴压缩试验进行了比较。结果表明,双轴应力状态下的力学参数与单轴应力状态时相比均有所提高,且双轴受压时混凝土的各项力学参数受侧压力和加载速率的共同影响,并呈现出不同的变化规律。
In order to grasp dynamic mechanical properties of concrete under biaxial compression, the tests of 300 mm cube concrete specimens are performed on real triaxial machine at different strain rates （10^-5、10^-4、10^-3S^-1） under biaxial state. The compressive properties of concrete which include compressive strength, elastic modulus and peak strain are studied. Compared with the uniaxial stress state, the results show that the mechanical parameters are improved; the me chanical parameters of concrete are affected by the joint of the lateral pressure and loading rate, and it appears different change laws.
出处
《水电能源科学》
北大核心
2013年第5期100-102,148,共4页
Water Resources and Power
关键词
双轴受压
混凝土动态力学特性
抗压强度
弹性模量
峰值应变
biaxial compression
concrete dynamic mechanical characteristics
compressive strength
modulus ofelasticity
peak strain
