| 基于材料非线性的坝体-地基体系损伤本构模型研究 |
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| 引用本文： | 郝明辉,陈厚群,张艳红.基于材料非线性的坝体-地基体系损伤本构模型研究[J].水力发电学报,2011,30(6). |
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| 作者姓名： | 郝明辉 陈厚群 张艳红 |
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| 作者单位： | 中国水利水电科学研究院,北京,100048 |
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| 基金项目： | 水利部公益性行业科研专项(200901054,1261230100012); 国家自然科学基金(51079164); 中国水利水电科学研究院科研专项(抗集1133) |
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| 摘 要： | 传统的线弹性模型不能描述混凝土岩石在遭遇超出其抗拉、抗压强度的外荷载作用时所表现的非线性性能以及应力重分布现象,本文从损伤力学的角度出发,坝体-地基体系分别采用混凝土损伤塑性模型—D-P弹塑性模型及混凝土损伤塑性模型-修正的岩石损伤塑性模型,对典型的Koyna重力坝进行动力非线性响应分析。计算结果表明实际坝体的损坏可能是由于地基破坏造成的。
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| 关 键 词： | 坝体-地基体系 非线性 混凝土损伤塑性模型 修正的岩石损伤塑性模型 |
Constitutive model of dam-foundation system damage for nonlinear materials |
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| HAO Minghui,CHEN Houqun,ZHANG Yanhong.Constitutive model of dam-foundation system damage for nonlinear materials[J].Journal of Hydroelectric Engineering,2011,30(6). |
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| Authors: | HAO Minghui CHEN Houqun ZHANG Yanhong |
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| Affiliation: | HAO Minghui,CHEN Houqun,ZHANG Yanhong(China institute of water resources and hydropower research,Beijing 100048) |
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| Abstract: | The traditional linear elastic model can not describe nonlinear behavior or stress redistribution of concrete mematerials or rock materials if their tensile or compressive strength are exceeded under certain external load.In damage mechanics view,a dam-foundation system was simulated with a concrete damage plasticity model,a D-P plastic model,a concrete damage plasticity model and a rock modified damage plasticity model,respectively,to analyze the dynamic nonlinear responses of a typical Koyna gravity dam.T... |
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| Keywords: | dam-foundation system nonlinear concrete damaged plasticity model rock modified damaged plasticity model |
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