| 钢纤维混凝土力学性能和本构关系研究 |
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| 引用本文： | 刘永胜,王肖钧,金挺,劳俊.钢纤维混凝土力学性能和本构关系研究[J].中国科学技术大学学报,2007,37(7):717-723. |
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| 作者姓名： | 刘永胜 王肖钧 金挺 劳俊 |
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| 作者单位： | 1. 中国科学技术大学力学和机械工程系,安徽合肥,230027;华东交通大学土木建筑学院,江西南昌,330013
2. 中国科学技术大学力学和机械工程系,安徽合肥,230027 |
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| 摘 要： | 利用MTS810和直径为74 mm的大尺寸SHPB实验装置开展了钢纤维混凝土的动静态力学性能实验.实验结果表明钢纤维混凝土是一种具有非常明显的钢纤维增强、增韧效应的应变率敏感材料.根据实验应力应变曲线的基本特征,提出了一种钢纤维混凝土的含损伤本构模型.该模型在考虑钢纤维增强、应变率硬化、损伤软化等因素下,描述了钢纤维混凝土的受力响应特性.
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| 关 键 词： | 钢纤维混凝土 应变率 本构关系 损伤 |
| 文章编号： | 0253-2778（2007）07-0717-07 |
| 修稿时间： | 2006-11-282007-04-03 |
Study on the mechanical properties and constitutive relation of steel fiber reinforced concrete |
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| LIU Yong-sheng,WANG Xiao-jun,JIN Ting,LAO Jun.Study on the mechanical properties and constitutive relation of steel fiber reinforced concrete[J].Journal of University of Science and Technology of China,2007,37(7):717-723. |
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| Authors: | LIU Yong-sheng WANG Xiao-jun JIN Ting LAO Jun |
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| Institution: | 1. Department of Modern Mechanics, University of Science and Technology of China, He f ei 230027, China ; 2. School of Civil Engineer and Architecture, East China Jiaotong University, Nanchang 330013, China |
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| Abstract: | The Quasi-static and dynamic mechanical properties of steel fiber reinforced concrete(SFRC) were investigated by MTS and SHPB.The experimental results showed that SFRC is a material with obvious steel reinforcing,toughening,and strain-rate hardening properties.According to the basic characteristics of the experimental stress-strain curves,a damage constitutive model including the effect of steel fiber reinforcing and strain-rate hardening and damage softening was proposed and the stress-strain curves tested prove the effectiveness of the model. |
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| Keywords: | steel fiber reinforced concrete strain-rate constitutive relation damage |
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