摘要
为探究冲击荷载作用下花岗岩的动态力学参数的变化规律,文中利用分离式霍普金森压杆试验技术(SHPB)对花岗岩试件进行冲击试验。结果表明,花岗岩的峰值应力随着应变率的增长呈线性增长,表现出明显的应变率效应。动态弹性模量与应变速率间存在正相关性,峰值应变与应变率呈现S型函数关系,极限应变随应变率的增长呈现出线性递增趋势。
In order to explore the variation law of the dynamic mechanical parameters of granite under impact load,the impact test of granite specimens was carried out by using the split Hopkinson pressure bar test(SHPB),and the test results showed that the peak stress of granite increased linearly with the increase of strain rate,showing an obvious strain rate effect.There is a positive correlation between the dynamic elastic modulus and the strain rate,the peak strain and the strain rate show an S-shaped function relationship,and the ultimate strain shows a linear increasing trend with the increase of the strain rate.
作者
李永杨
郝英奇
陈旭东
Li Yongyang;Hao Yingqi;Chen Xudong(Anhui Jianzhu University Survey,Design and Research Institute Co.Ltd.,Hefei,Anhui 230022;AnhuiSchool of Civil Engineering,Anhui Jianzhu University,Hefei,Anhui 230601)
出处
《江西建材》
2024年第2期132-134,共3页
Jiangxi Building Materials
基金
安徽省住房城乡建设科学技术计划项目《低温环境对施工缺陷的钢筋套筒浆锚连接件力学性能影响研究》(项目编号:2021-RK01)
安徽省住房城乡建设科学技术计划项目《合肥地区基桩快速维持荷载法检测技术研究》(项目编号:HYB20230254)。
