| 基于损伤理论的钢筋混凝土结构裂缝分析 |
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| 引用本文： | 任晓丹,李杰.基于损伤理论的钢筋混凝土结构裂缝分析[J].同济大学学报(自然科学版),2015,43(8):1129-1134. |
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| 作者姓名： | 任晓丹 李杰 |
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| 作者单位： | 同济大学,同济大学 |
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| 基金项目： | 国家自然科学基金项目（51261120374，51208374） |
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| 摘 要： | 依据裂缝开展与受拉损伤演化之间的内在联系,提出了基于损伤变量估计裂缝宽度的基本方法.将模型与损伤本构关系以及非线性有限元方法结合,可以精细地描述钢筋混凝土构件在外力作用下的非线性行为,特别是裂缝开展规律.与试验结果的对比表明,该方法不但具有良好的精度,而且能够描述构件非线性发展全过程中裂缝产生和扩展的规律.基于该方法精细分析混凝土结构中裂缝产生和发展的过程,可以为实际工程的分析和设计提供有力的依据.
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| 关 键 词： | 混凝土结构 裂缝宽度 损伤模型 非线性有限元法 |
| 收稿时间： | 2014/5/24 0:00:00 |
| 修稿时间： | 2015/4/19 0:00:00 |
Damage Theory Based Analysis of Crack Opening Width for RC Structures |
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| REN Xiaodan and LI Jie.Damage Theory Based Analysis of Crack Opening Width for RC Structures[J].Journal of Tongji University(Natural Science),2015,43(8):1129-1134. |
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| Authors: | REN Xiaodan and LI Jie |
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| Institution: | College of Civil Engineering, Tongji University, Shanghai 200092, China and College of Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Starting from the damage model proposed by the design code of RC structure, a model to evaluate the crack opening width is proposed considering the dependence between damage and crack. By implementing the proposed method into the nonlinear finite element package, the crack propagation and opening within RC structure could be simulated in a subtle way. The agreement between the simulating results and the experimental data indicates the validation and verification of the proposed method. The proposed method lay solid foundations for the engineering analysis and design of RC structures. |
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| Keywords: | concrete structure crack opening width damage model nonlinear finite element method |
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