采用波形整形技术、万向头技术和应变直接测量技术测量了混凝土材料的动态应力一应变曲线;通过损伤“冻结”试验及相应的MTS静态试验研究了混凝土材料的损伤演化规律;利用Hopkinson压杆技术直接测得层裂信号,进而可确定混凝土材料的层裂强度.
Pulse shaping technique, gimbal micro-adjusting technique and experiments using strain gauge to measure the dynamic stress-strain curve of concrete directly were introduced. The equation of damage evolution of concrete was obtained using the so-called 'freezing in' damage test and quasi-static (MTS) test. The spalling signal were recorded directly by the split Hopkinson pressure bar (SHPB) technique, and the spalling strength of a long concrete rod was determined.