| 体外预应力混凝土梁的非线性有限元分析 |
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| 引用本文： | 沈殷,李国平,陈艾荣.体外预应力混凝土梁的非线性有限元分析[J].同济大学学报(自然科学版),2003,31(7):803-807. |
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| 作者姓名： | 沈殷 李国平 陈艾荣 |
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| 作者单位： | 同济大学,桥梁工程系,上海,200092 |
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| 摘 要： | 体外预应力结构在承载能力极限状态下的性能是设计关注的重要问题 ,而现行规范中并没有提出一种有效的计算方法 .而采用非线性有限元程序对体外预应力混凝土梁进行全过程分析不失为一种较精确的方法 ,同时考虑了混凝土和钢筋的材料非线性以及结构的几何非线性 ,建立了体外预应力简支梁的三维分析模型 ,分析并模拟了在三分点荷载作用下加载直到破坏的全过程 ,并和试验进行了比较
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| 关 键 词： | 体外预应力 混凝土梁 非线性 有限元 |
| 文章编号： | 0253-374X(2003)07-0803-05 |
| 修稿时间： | 2002年7月16日 |
Nonlinear Models of Externally Prestressed Concrete Beams |
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| SHEN Yin,LI Guo-ping,CHEN Ai-rong.Nonlinear Models of Externally Prestressed Concrete Beams[J].Journal of Tongji University(Natural Science),2003,31(7):803-807. |
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| Authors: | SHEN Yin LI Guo-ping CHEN Ai-rong |
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| Abstract: | The behavior of externally prestressed concrete beams at failure is essential to the design of external prestressing,however,nowadays specifications never provide a valid and effective method specially to external prestressing.Numerical simulation for externally prestressed beams based on a nonlinear finite element approach is a perfectly relatively precise way.Considering both material and geometrical nonlinearity,externally prestressed simply supported beams are modeled and analysed for the whole process of loading until failure at third-point loading,and compared with the experimental ones. |
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| Keywords: | externally prestress concrete beams nonlinear finite element |
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