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| 一种新的混凝土受拉本构模型 | |
| 引用本文： | 杨卫忠,王保枝,樊濬.一种新的混凝土受拉本构模型[J].河南科学,2007,25(1):81-84. |
| 作者姓名： | 杨卫忠 王保枝 樊濬 |
| 作者单位： | 1. 郑州大学,土木工程学院,郑州,450002 2. 河南省城乡建筑设计院,郑州,450014 3. 河南省勘察设计注册,工程师管理委员会,郑州,450014 |
| 摘 要： | 混凝土单轴受拉应力-应变曲线存在形式多样且不统一.根据等效应变假设和损伤力学基本原理,建立了单轴受拉混凝土的弹塑性本构模型,可导出已有单轴受拉本构关系,并能反映混凝土的刚度退化和卸载后的残余变形;提出一类损伤函数和不可逆变形表达式,利用应力-应变曲线特征条件和优化算法确定模型参数;与已有受拉结果相比较,模型的预测结果良好。 |
| 关 键 词： | 混凝土 应力-应变关系 损伤 受拉 |
| 文章编号： | 1004-3918（2007）01-0081-04 |
| 修稿时间： | 2006-09-15 |
A New Constitutional Model for Concrete Materials under Uniaxial Tensive Loading |
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| YANG Wei-zhong,WANG Bao-zhi,FAN Jun.A New Constitutional Model for Concrete Materials under Uniaxial Tensive Loading[J].Henan Science,2007,25(1):81-84. | |
| Authors: | YANG Wei-zhong WANG Bao-zhi FAN Jun |
| Institution: | 1. School of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China; 2. Architecture Design Institute of Urban and Countryside of Henan Province, Zhengzhou 450014, China 3. Management Council of Registered Design Engineer of Henan Province, Zhengzhou 450014, China |
| Abstract: | There are many various stress-strain curves for concrete materials subjected to monotonic tensive loading.Based on the hypothesis of strain equivalence and theory of damage mechanics,a elastoplastic damage constitutive model of concrete under uniaxial tension is established.Existing stress-strain relation of concrete under the loading can be deduced from the model.The stiffness degradation and plastic strain can be shown in the model.The function of damage and plasticity strain is given,and the coefficients used in the model can be determined by the condition of the curve on the characteristic points and method of optimization.It is found that theoretical curve has a good agreement with experiments′. |
| Keywords: | concrete stress-strain relation damage tension |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |