中文摘要：

为了研究荷载历史对混凝土动态抗压特性的影响，应用MTS试验机对经历了30％极限抗压强度荷载历史后的C30混凝土试件进行了应变速率为1×10^-5／s～1×10^-2／s的单轴动态抗压试验。试验结果表明：经历荷载历史后，混凝土的动态抗压特性发生了一定程度的变化；与直接加载相比，经历荷载历史后的混凝土平均极限抗压强度、弹性模量降低了，峰值应变没有明显变化；抗压强度、弹性模量随着应变速率的增大而增大，峰值应变正好相反。

英文摘要：

In order to study the impact of the loading history of dynamic compressive properties of concrete, compressive experiments of concrete specimens（C30） experienced a 30% ultimate compressive strength loading history are carried out on MTS, with the uniaxial strain rate ranging from 100^-5/s to 10^-2/s. The test results show that after the loading history, the dynamic compressive properties of con- crete has a certain degree of change; compared with the direct load, the average ultimate compressive strength and elastic modulus of concrete would decrease after the loading history, but the peak strain did not change significantly;compressive strength and elastic modulus would increase with the strain rate in- creasing, but the peak strain is just the opposite.