| 柔性吊桥无应力初始状态的确定 |
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| 引用本文： | 魏建东,刘山洪,钱永久.柔性吊桥无应力初始状态的确定[J].重庆交通大学学报(自然科学版),2003,22(2):6-9,40. |
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| 作者姓名： | 魏建东 刘山洪 钱永久 |
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| 作者单位： | 西南交通大学,桥梁及结构工程系,四川成都,610031 |
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| 摘 要： | 为评估某柔性吊桥的承载力,笔者对其进行了空载状态几何形状测量和静载试验,并利用几何非线性有限元法对试验结果进行了数值模拟.着重探讨了利用结构现状参数,确定结构无应力初始状态的方法.有限元法的模拟结果与实测值的吻合证明了该方法的正确性.笔者建立的结构无应力初始状态确定方法,可用于大跨度索结构的有限元分析与设计.
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| 关 键 词： | 吊桥 索结构 无应力初始状态 几何非线性 有限元法 |
| 文章编号： | 1001-716X(2003)02-0006-04 |
| 修稿时间： | 2002年6月19日 |
Determining of non-strain state of flexible suspension bridge |
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| Abstract: | In order to evaluate the carrying capacity of one flexible suspension bridge,the authors measured its shape under no load and took a static test under traffic load.Non linear FEM was used to model the behavior of the structure.It was focused on the method to determine the non strain state of structure using the measured results.The consistenly of simulated results with the test confirms the correctness of the method.The method,proposed in this paper to determine the non strain state of structure,can be used to design and analysis large span cable structures. |
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| Keywords: | suspension bridge cable structure non strain state geometry non linear FEM |
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