利用大型多功能静动力三轴仪系统地进行了混凝土常规三轴静动态抗压性能试验,分析了混凝土在不同水压(0、2、5、10 MPa、)中受不同加载速率(10-5、10-4、10-3、10-2/s)作用下的力学与变形特性。试验结果表明,混凝土的强度随应变速率的增大而增大,随围压增大而增大;峰值应变总体随应变速率增大而增大,随围压增大变化不明显;弹性模量随加载速率的增加总体呈增大的趋势,与加载环境的相关性较小;混凝土的破坏形态与应变速率及加载环境的相关性均较小。
Studies on concrete subjected to triaxial compressive properties of static and dynamic by using static and dynamic triaxial apparatus are carried out.analyzed the mechanical and deformation characteristics of concrete at different hydraulic(0,2,5,10 MPa)and loading rate(10-5/s,10-4/s,10-3/s,10-2/s).Test results show that the compressive strength rate increases with strain and with confining pressure;peak strain increases with strain rate overall.elasticity modulus decreasing with increasing loading rate shows an increasing trend.The failure pattern of concrete with strain rate and loading conditions is considered less relevant.