| 钢纤维高强混凝土冲击压缩的试验研究 |
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| 引用本文： | 巫绪涛,胡时胜,陈德兴,余泽清.钢纤维高强混凝土冲击压缩的试验研究[J].爆炸与冲击,2005,25(2):125-131. |
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| 作者姓名： | 巫绪涛 胡时胜 陈德兴 余泽清 |
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| 作者单位： | 1.中国科学技术大学中科院材料力学行为和设计重点实验室，安徽 合肥 230026； |
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| 摘 要： | 介绍了利用100 mm SHPB装置获得钢纤维高强混凝土冲击压缩应力-应变曲线的试验研究。同一类试样在静态和动态共4个不同应变率下的试验结果揭示混凝土是应变率敏感材料，其破坏应变、峰值应变和弹性模量表现出显著的应变率强化效应。从静态和动态压缩下混凝土损伤演化的不同形式对这种应变率强化效应进行了详细讨论。从相近应变率下不同钢纤维含量试样的试验结果中，发现冲击压缩下钢纤维对混凝土的增强效应随应变率的增大而减弱。从钢纤维对混凝土静态和动态压缩下损伤演化形式的影响，讨论了钢纤维对混凝土的这种增强效应。
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| 关 键 词： | 固体力学 动态力学性能 应变率效应 钢纤维高强混凝土 SHPB技术 |
| 文章编号： | 1001-1455(2005)02-0125-07 |
| 修稿时间： | 2004年6月23日 |
Impact compression experiment of steel fiber reinforced high strength concrete |
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| WU Xu-tao,HU Shi-sheng,CHEN De-xing,YU Ze-qing.Impact compression experiment of steel fiber reinforced high strength concrete[J].Explosion and Shock Waves,2005,25(2):125-131. |
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| Authors: | WU Xu-tao HU Shi-sheng CHEN De-xing YU Ze-qing |
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| Institution: | 1.CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, Anhui, China;2.General Staff Engineer Third Academe, Luoyang 471023, Henan, China |
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| Abstract: | In this paper, the impact compression tests of the stress-strain curves of steel fiber reinforced high strength concrete got by 100 mm SHPB setup are introduced. From the compression strength, peak strain and the elastic modulu etc., the effects of strain rate on the impact compression of steel fiber reinforced concrete are discussed with the results of the same specimens under different strain rate. From the compression strength, peak strain and the toughness, the reinforcing effect and toughening effect of steel fiber are discussed. |
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| Keywords: | solid mechanics dynamic properties effects of strain rate steel fiber reinforced high strength concrete SHPB technique |
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