| 混凝土的三维本构关系 |
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| 引用本文： | 胡泉秀,熊峰,吴卫.混凝土的三维本构关系[J].四川建筑科学研究,2003,29(1):68-69,71. |
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| 作者姓名： | 胡泉秀 熊峰 吴卫 |
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| 作者单位： | 1. 四川大学土木工程及应用力学系,四川,成都,610065
2. 四川城镇建筑设计所,四川,成都,610042 |
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| 基金项目： | 国家防灾基金资助项目(50078016) |
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| 摘 要： | 基于材料的各向同性理论，根据应力-应变增量关系，建立了一个混凝土的三维本构关系模型。采用了目前较为成熟的Ottosen的破坏准则，利用了Sargin的单轴应力-应变关系，并在三维增量非线性关系中引入等效单轴切线模量，所用的模型中的参数是根据前人的经验和实验来取定的，通过对混凝土的各向受拉，受压和拉压结合的分析表明，所建立的模型较为简单，实用。
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| 关 键 词： | 三维本构关系 等效单轴切线模量 非线性 本构模型 混凝土 |
| 文章编号： | 1008-1933(2003)01-0068-02 |
3D constitutive relationship of concrete |
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| HU Quan xiu ,XIONG Feng ,WU Wei.3D constitutive relationship of concrete[J].Building Science Research of Sichuan,2003,29(1):68-69,71. |
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| Authors: | HU Quan xiu XIONG Feng WU Wei |
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| Affiliation: | HU Quan xiu 1,XIONG Feng 1,WU Wei 2 |
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| Abstract: | The 3D constitutive relationship of concrete model is based on the isotropic approach of material with stress strain increment relationship.The ottosen criterion is adopted to determine the peak values of strain and stress,and Dawin's and Sargin's equivalent uniaxial concept is applied to the 3D non liner incremental relationship.The parameters in this model are obtained from previous researchers' experience and experimental data.From the analysis about elements under several cases which include elements are subjected to uniaxial,biaxial and triaxial compression or intension,it can be observed that this model is a relative accurate and effective one and it is convenient to be employed in the analysis of engineering structure. |
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| Keywords: | D constitutive relationship isotropic approach equivalent uniaxial tangent modulus ottosen criterion |
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