| 动静组合加载下岩石的吸能特性研究 |
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| 引用本文： | 王泽东,许金余,吕晓聪,范建设,苏灏扬.动静组合加载下岩石的吸能特性研究[J].兵工学报,2010(Z1). |
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| 作者姓名： | 王泽东 许金余 吕晓聪 范建设 苏灏扬 |
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| 作者单位： | 空军工程大学工程学院;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; |
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| 摘 要： | 地下工程中的岩体多处于复杂应力状态下,采用100 mm分离式霍普金森压杆(SHPB)试验装置研究了不同应力状态的砂岩在冲击荷载作用下的动态力学性能,将不同应力状态下砂岩的冲击力学性能进行对比分析。结果表明:砂岩的强度和比能量吸收(SEA)随平均应变率的增长而近似线性增长,具有显著的应变率相关性;在同一应变率水平下,围压对砂岩的动态力学性能有显著影响,砂岩的SEA大幅提高;围压作用下砂岩的损伤度与SEA成非线性正相关。
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| 关 键 词： | 砂岩 分离式霍普金森压杆试验装置 应变率效应 比能量吸收 |
Research on Energy Absorption Property of Rock Under Dynamic and Static Loads |
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| WANG Ze-dong,XU Jin-yu,LV Xiao-cong,FAN Jian-she,SU Hao-yang.Research on Energy Absorption Property of Rock Under Dynamic and Static Loads[J].Acta Armamentarii,2010(Z1). |
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| Authors: | WANG Ze-dong XU Jin-yu LV Xiao-cong FAN Jian-she SU Hao-yang |
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| Affiliation: | WANG Ze-dong1,XU Jin-yu1,2,LV Xiao-cong1,FAN Jian-she3,SU Hao-yang1(1.Engineering Institute,Air Force Engineering University,Xi'an 710038,Shaanxi,China,2.College of Mechanics and Civil Architecture,Northwest Polytechnic University,Xi'an 710072,3.The Ninth Engineering Head Group of China Airport,Xinjin 611430,Sichuan,China) |
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| Abstract: | The rock mass in underground engineering is usually under complex stress conditions.The dynamic mechanical properties of the sandstone subjected to impact load were investigated by a split Hopkinson pressure bar(SHPB),and the properties of the sandstone under different stress conditions were analyzed and compared.The tested results show that the strength and specific energy absorption(SEA) of the sandstone increase almost linearly with the increase of average strain rate;under the same strain rate,the influ... |
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| Keywords: | sandstone split Hopkinson pressure bar apparatus strain rate effect specific energy absorption |
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