| A Numerical Stress-strain Response Model of All Grades of Concretes under Uniaxial Compression |
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| 引用本文： | WANG Yongwei PU Xincheng WANG Zhijun. A Numerical Stress-strain Response Model of All Grades of Concretes under Uniaxial Compression[J]. 武汉理工大学学报(材料科学英文版), 2006, 21(3): 149-152. DOI: 10.1007/BF02840906 |
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| 作者姓名： | WANG Yongwei PU Xincheng WANG Zhijun |
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| 作者单位： | [1]College of Water Resource ＆ Hydropower, Sichuan University, Chengdu 610065, China [2]Department of Construction Material,Chongqing University, Chongqing 400045 China [3]Department of Civil Engineering, Chongqing University,Chongqing 400045,China |
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| 基金项目： | 国家自然科学基金;教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | An important problem facing stress-strain response modeling of concrete is the complexity of the compressive strength grades. 21 groups of speeimens with different cubic compressive strength （56.3- 164.9 MPa ） hate beets numerically analyzed. Using only the compressive strength, a stress-strain response model of different concrete grade was established. The numerical simulation model not only qualitatively reproduces the relationship of uniaxial compressive strength, peak value stress and cubic compressive strength, but realizes the consistence of the ascending branch of stress-strain cunts with different strength grades by introducing the correction coefficient k. The results indicate k increases gradually from 0 to approximate 1 with the increase of the compressive strength, corresponding to the transition from the paracurve to straight line branch in stress-strain curves. When k is 0, the madel is identical to the Hognestad equation. A good agreement with the experiment data was obtained.
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| 关 键 词： | 高强混凝土 应力-应变响应 单轴压缩 机械性能 数字模型 |
| 收稿时间： | 2005-02-23 |
| 修稿时间： | 2006-03-17 |
A numerical stress-strain response model of all grades of concretes under uniaxial compression |
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| Wang Yongwei Ph D,Pu Xincheng,Wang Zhijun. A numerical stress-strain response model of all grades of concretes under uniaxial compression[J]. Journal of Wuhan University of Technology. Materials Science Edition, 2006, 21(3): 149-152. DOI: 10.1007/BF02840906 |
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| Authors: | Wang Yongwei Ph D Pu Xincheng Wang Zhijun |
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| Affiliation: | (1) College of Water Resource & Hydropower, Sichuan University, 610065 Chengdu, China;(2) Department of Construction Material, Chongqing University, 400045 Chongqing, China;(3) Department of Civil Engineering, Chongqing University, 400045 Chongqing, China |
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| Abstract: | An important problem facing stress-strain response modeling of concrete is the complexity of the compressive strength grades. 21 groups of specimens with different cubic compressive strength (56.3-164.9 MPa) have been numerically analyzed. Using only the compressive strength, a stress-strain response model of different concrete grade was established. The numerical simulation model not only quantitatively reproduces the relationship of uniaxial compressive strength, peak value stress and cubic compressive strength, but realizes the consistence of the ascending branch of stress-strain curves with different strength grades by introducing the correction coefficient k. The results indicate k increases gradually from 0 to approximate 1 with the increase of the compressive strength, corresponding to the transition from the paracurve to straight line branch in stress-strain curves. When k is 0, the model is identical to the Hognestad equation. A good agreement with the experiment data was obtained. |
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| Keywords: | high-strength concrete stress-strain response mechanical property |
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