| 碱矿渣混凝土动态压缩性能试验及数值模拟研究 |
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| 引用本文： | 袁晓辉,李永强,张昊,王士革. 碱矿渣混凝土动态压缩性能试验及数值模拟研究[J]. 科学技术与工程, 2018, 18(10) |
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| 作者姓名： | 袁晓辉 李永强 张昊 王士革 |
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| 作者单位： | 信阳师范学院建筑与土木工程学院 |
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| 摘 要： | 为研究碱矿渣混凝土(AASC)材料的动态压缩性能及损伤破坏机理,以应变率(39 s~(-1)、57 s~(-1)、75 s~(-1))为变量,开展了动态压缩性能试验;并对试验结果进行分析,获得三种应变率条件下该材料的应力-应变关系曲线。曲线分析显示其峰值应力和应变均随应变率的提高而增大,表明AASC属于应变率敏感材料。采用HJC本构模型开展动态压缩数值模拟,结果显示应力-应变关系曲线数值模拟结果与试验结果较为吻合,其累积损伤破坏过程是由中心向外围逐渐破坏。
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| 关 键 词： | 碱矿渣混凝土 应变率 HJC本构模型 数值模拟 |
| 收稿时间： | 2017-09-15 |
| 修稿时间： | 2017-12-06 |
Experimental Study and Numerical Simulation on Dynamic Compressive Properties of Alkali Activated Slag Concrete |
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| YUAN Xiao-hui,LI Yong-qiang,ZHANG Hao and WANG Shi-ge. Experimental Study and Numerical Simulation on Dynamic Compressive Properties of Alkali Activated Slag Concrete[J]. Science Technology and Engineering, 2018, 18(10) |
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| Authors: | YUAN Xiao-hui LI Yong-qiang ZHANG Hao WANG Shi-ge |
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| Affiliation: | College of Architecture and Civil Engineering,Xin Yang Normal University,College of Architecture and Civil Engineering,Xin Yang Normal University,College of Architecture and Civil Engineering,Xin Yang Normal University,College of Architecture and Civil Engineering,Xin Yang Normal University |
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| Abstract: | Dynamic compressive experimental was done by change the strain rate (39s-1, 57s-1, 75s-1) to investigate the dynamic compressive properties and damage mechanism of alkali activated slag concrete(AASC). Getting the stress - strain curves of AASC under the different strain rate, the curve analysis results show that the peak stress and peak strain increase with the increase of strain rate, indicates the AASC is a strain rate sensitive material. Numerical simulation was done with the HJC constitutive model, result shows the stress-strain curve of numerical simulation and experimental were simulated. And the damage mechanism of AASC is beginningSinStheScenterSand accordinglySoutward.S |
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| Keywords: | activated slag concrete strain rate HJC constitutive model numericalsimulation |
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