| 预应力混凝土结构组合式非线性分析模型 |
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| 引用本文： | 于琦,孟少平,吴京,郑开启.预应力混凝土结构组合式非线性分析模型[J].工程力学,2011(11):130-137. |
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| 作者姓名： | 于琦 孟少平 吴京 郑开启 |
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| 作者单位： | 东南大学混凝土&预应力混凝土教育部重点实验室;华东建筑设计研究院有限公司; |
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| 基金项目： | 国家973项目(2007CB714200); 国家自然科学基金项目(50878055) |
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| 摘 要： | 为了准确预测预应力混凝土结构的非线性行为，建立了基于纤维截面的预应力混凝土结构组合式分析模型。开发了一种粘结单元模拟预应力筋与混凝土问的粘结滑移，采用基于纤维截面的粘结单元模拟普通纵筋与混凝土的粘结滑移，模型还考虑了材料低周疲劳特性对结构损伤的贡献。利用3组预应力混凝土框架试验对模型进行了验证，结果表明：组合式模型不仅...
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| 关 键 词： | 预应力混凝土 非线性分析 组合式模型 纤维截面 粘结滑移 低周疲劳 抗震性能 |
A COMBINED NONLINEAR ANALYTICAL MODEL OF PRESTRESSED CONCRETE STRUCTURES |
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| YU Qi,MENG Shao-ping,WU Jing,ZHENG Kai-qi.A COMBINED NONLINEAR ANALYTICAL MODEL OF PRESTRESSED CONCRETE STRUCTURES[J].Engineering Mechanics,2011(11):130-137. |
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| Authors: | YU Qi MENG Shao-ping WU Jing ZHENG Kai-qi |
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| Affiliation: | YU Qi1,2,MENG Shao-ping1,WU Jing1,ZHENG Kai-qi1(1.Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education,Southeast University,Nanjing 210096,China,2.East China Architectural Design and Research Institute Co.,Ltd,Shanghai 200002,China) |
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| Abstract: | In order to predict the nonlinear behavior of prestressed concrete structures,a combined model based on the fiber section is proposed.A bond element is developed to simulate the bond-slip behavior between prestressed tendons and concrete,and the fiber section-based bond element is utilized to model that between reinforcing bars and concrete.The contribution to structural damage due to the low cycle fatigue property of materials is also considered.The proposed model is illustrated by three tests of prestress... |
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| Keywords: | prestressed concrete nonlinear analysis combined model fiber section bond-slip low cycle fatigue seismic performance |
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