| 混凝土单轴受压应力-应变曲线比较 |
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| 引用本文： | 李义强,王新敏,陈士通.混凝土单轴受压应力-应变曲线比较[J].公路交通科技,2005,22(10):75-78. |
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| 作者姓名： | 李义强 王新敏 陈士通 |
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| 作者单位： | 1. 石家庄铁道学院大型结构健康诊断与控制研究所,河北,石家庄,050043
2. 石家庄铁道学院国防交通研究所,河北,石家庄,050043 |
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| 摘 要： | 针对目前常采用的混凝土单轴受压应力-应变曲线不能完全符合典型曲线几何特征这一问题,通过理论推导和详细地比较,给出了在单轴受压混凝土应力-应变曲线上升段Hognestad公式、Saenz公式和CEB/FIP公式的适用范围,提出了合理的混凝土单轴受压应力-应变曲线。用大型通用软件ANSYS分析两根试验梁,分析结果与实测结果相当吻合,表明本文提出的应力-应变曲线是准确、可靠的。
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| 关 键 词： | 应力-应变曲线 本构关系 非线性分析 有限元分析 ANSYS |
| 文章编号： | 1002-0268(2005)10-0075-04 |
| 收稿时间： | 2004-07-20 |
| 修稿时间： | 2004年7月20日 |
Comparison of Stress-Strain Curves for Concrete under Uniaxial Stresses |
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| LI Yi-qiang,WANG Xin-min,CHEN Shi-tong.Comparison of Stress-Strain Curves for Concrete under Uniaxial Stresses[J].Journal of Highway and Transportation Research and Development,2005,22(10):75-78. |
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| Authors: | LI Yi-qiang WANG Xin-min CHEN Shi-tong |
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| Institution: | 1. Structural Health Monitoring and Control Institute, Shijiazhuang Railway Institute, Hebei Shijiazhuang 0501343, China; 2. Research Institute of Communications for National Defense, Shijiazhuang Railway Institute, Hebei Shijiazhuang 050043, China |
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| Abstract: | The frequently adopted stressstrain curves of concrete under uniaxial stresses unfit the typical curves.This paper deduced and compared the ordinary adopted stressstrain curves of concrete and gives applicable scope adopting Hognestad formula,the formula of Saenz and CEB/FIP formula for the ascending part of the stressstrain curve and puts forward the suitable stressstrain curve under uniaxial stresses.Using the large generalpurpose finite element procedure ANSYS to analyze the two experimental beams,the analysis result and the measurement result fit well,which proves that the stressstrain curve of concrete put forward in this paper is accurate and reliable. |
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| Keywords: | Stressstrain curves of concrete Constitutive relations Nonlinear analysis Finite Element Analysis ANSYS |
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