【作者】 翟毅； 许金余； 李为民； 杨进勇； 范建设； 杨坤；

【Author】 ZHAI Yi~1,XUJin-yu~(1,2),LI Wei-min~1,YANG Jin-yong~1,FAN Jian-she~3,YANG Kun~3 (1.Department of Airfield and Building Engineering,Air Force Engineering University Engineering Institute,Shanxi Xi’an 710038,China, 2.College of Mechanics and Civil Architecture,Northwest Polytechnic University,Shanxi Xi’an 710072,China; 3 The Ninth Engineering Brigade of Chinese Airport Construction,Sichuan Xinjin 611430,China)

【机构】 空军工程大学工程学院机场建筑工程系； 西北工业大学力学与土木建筑学院； 中国航空港建设第九工程总队；

【摘要】 混凝土是一种应变率敏感性材料,在冲击荷载的作用下表现出明显的应变率效应。在相同的应变率下,由于应变率历史的差异混凝土可能表现出不同的性能。分别利用传统的φ100mm SHPB试验装置和采用波形整形技术的试验装置,研究了C50素混凝土在不同应变率下的冲击压缩力学性能,得到相对应的应力—应变曲线;分析了相近应变率条件下,不同的应变率历史对混凝土各项性能的影响。更多还原

【Abstract】 Concrete is a kind of sensitive materials of strain rate,and demonstrates an obvious strain rate effect under impact loading.With the same strain rate,the concrete may demonstrates different performance with different histories of strain rates. The impact compress mechanical properties of C50 plain concrete under different strain rates were investigated,using the traditionalΦ100mm SHPB experimental rig and the adopting pulse shaper technology one,received the corresponding stressstrain curves.Under the approximate strain rate conditions,the mechanical properties on concrete with different histories of strain rate were analyzed in the paper.更多还原