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基于Hopkinson杆技术早龄期混凝土动态压缩性能试验

The Study of Impact Compressive Characteristics of Early Age Concrete in Mine Based on Hopkinson Bar
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摘要 利用直径74mm的分离式霍普金森压杆对龄期为3d和7d混凝土试样进行冲击压缩性能试验,结合筛分实验分析试样的破坏特征.试验结果表明随龄期的增长,混凝土试件破碎块度增大.试样破坏特征可知,试件呈现拉伸破坏,且随应变率增大,混凝土试件破碎块度逐渐减小,具有显著的应变率效应. Using the split hopkinson pressure bar with a diameter of 74 mm to test the impact compression performance of concrete specimens with the age of 3d and 7d,combining with the screening test to analyze the damage characteristics of specimens. The results show that： With the impact of dynamic loading,the dynamic compressive strength of concrete increases with age,the sensitivity of the strain rate was demonstrated in all ages.
作者 黄伟
机构地区 淮南联合大学建筑工程系 安徽理工大学矿山地下工程教育部工程研究中心
出处 《佳木斯大学学报（自然科学版）》 CAS 2016年第2期182-185,共4页 Journal of Jiamusi University：Natural Science Edition
基金 安徽省高校省级优秀人才基金重点项目(2013SQRL140ZD) 安徽省住房城乡建设科学技术计划项目(2013YF-55)
关键词 早龄期混凝土 SHPB 压缩性能 应力-应变曲线 筛分试验 early ages concrete SHPB compression performance stress-strain curve screening test
分类号 TU757.2 [建筑科学—建筑技术科学]
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佳木斯大学学报（自然科学版）
2016年 第2期

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