| 钢纤维混凝土高温后SHPB试验研究 |
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| 引用本文： | 巴恒静,杨少伟,杨英姿.钢纤维混凝土高温后SHPB试验研究[J].建筑技术,2009,40(8):719-721. |
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| 作者姓名： | 巴恒静 杨少伟 杨英姿 |
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| 作者单位： | 哈尔滨工业大学土木工程学院,150001,黑龙江哈尔滨 |
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| 摘 要： | 采用改进的分离式Hopkinson压杆装置，结合应变直测技术，分别对常温以及经历400℃和800℃高温的普通混凝土和钢纤维混凝土（SFRC）进行了单轴冲击压缩试验，减少了传统的Hpokinson压杆试验中的入射波的高频震荡，使得应变率的波动性明显减小。经历400℃和800℃后，普通混凝土的峰值应力和弹性模量均有较大程度的降低，同时，试件的能量吸收能力大幅度下降；钢纤维混凝土的峰值应力也有较大程度的降低，但是弹性模量降低较少。
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| 关 键 词： | 钢纤维混凝土 SHPB 动态压缩性能 能量吸收 |
SHPB EXPERIMENT OF STEEL FIBER REINFORCED CONCRETE EXPOSED TO HIGH TEMPERATURE |
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| BA Hengjing,YANG Shaowei,YANG Yingzi.SHPB EXPERIMENT OF STEEL FIBER REINFORCED CONCRETE EXPOSED TO HIGH TEMPERATURE[J].Architecture Technology,2009,40(8):719-721. |
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| Authors: | BA Hengjing YANG Shaowei YANG Yingzi |
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| Affiliation: | (School of Civil Engineering, Harbin Institute of Technology, 150001, Harbin, Heilongjiang, China) |
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| Abstract: | Combined with strain gauge measurement method, adopted to investigate the behavior of normal concrete and steel the modified split Hopkinson pressure bar was fiber reinforcement concrete exposed to 400℃ and 800℃ under uniaxial impact compressive loading. The experimental results show that compared with nonral temperature, the compressive strength and elasticity modulus of normal concrete exposed to 400℃ and 800℃ decrease obviously. At the same time, the energy absorbing capability deteriorates greatly after exposed to high temperature. The compressive strength of SFRC decreases also. But the elasticity modulus decreases lightly. |
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| Keywords: | SHPB |
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