三轴应力状态下混凝土的侵彻性能研究  

Penetration performance of concrete under triaxial stress

作　　者：徐松林[1] 单俊芳[1] 王鹏飞[1] 胡时胜[1] XU Songlin;SHAN Junfang;WANG Pengfei;HU Shisheng(CAS Key Laboratory for Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University ofScience and Technology of China,Hefei 230027,Anhui,China)

机构地区：[1]中国科学技术大学中国科学院材料力学行为和设计重点实验室

出　　处：《爆炸与冲击》2019年第7期1-8,共8页Explosion and Shock Waves

基　　金：国家自然科学基金(11672286,11602267,11472264,11872361);中石油与中科院重大战略合作项目(2015A-4812);安徽省自然科学基金(1708085MA05)

摘　　要：研制了三轴应力状态作用下混凝土侵彻实验装置。该装置采用液压伺服控制系统对立方体试件施加三向独立的静载、采用高压气体驱动子弹侵彻混凝土试件;试件六个面的动态压缩信号和侧面摩擦信号可由六根杆上的应变片记录。以混凝土试件为例,对立方体试件施加三向独立的0~100 MPa真三轴静载,研究其在不同应力状态下的侵彻性能,得到了立方体试件在无侧限、单向侧限、双向侧限下的侵彻差异,揭示出应力状态对侵彻性能的影响。In this study we developed a hydraulic servo control system for experimental study on concrete penetration under triaxial stress for independently-controlled triaxial confinement on cubic specimens,and launched bullets to penetrate concrete specimens with high pressure,using the strain gauges to record the dynamic compression signals and side friction signals on the six bars of six surfaces of the specimens.Taking the concrete specimens as an example,we investigated the cubic specimens’penetration performance under different stress states based on the independently-controlled triaxial confinement of 0-100 MPa,and obtained their penetration differences under unilateral,unilateral and bidirectional lateral confinements,revealing the effect of the stress state on penetration performance.

关 键 词：三轴应力状态 侵彻 混凝土 加载路径 

分 类 号：O347.3[理学—固体力学]