| 桁梁桥横向联结系的实用空间计算 |
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| 引用本文： | 黄健,石洞,李明昭.桁梁桥横向联结系的实用空间计算[J].同济大学学报(自然科学版),1986(3). |
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| 作者姓名： | 黄健 石洞 李明昭 |
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| 作者单位： | 同济大学工程结构研究所，同济大学工程结构研究所，同济大学工程结构研究所 硕士研究生 |
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| 摘 要： | 根据李国豪的桁梁扭转理论,本文提出了一种计算桁梁桥的梁单元有限元法。在此基础上,分析了两种类型的铁路简支钢桁梁桥,特别是其横联的力学功能,归纳得到了横联剪力H的实用计算公式。为了验证梁单元有限元法的可靠性,本文除介绍了一个模型试验的结果之外,还与空间杆系有限元法的计算结果进行比较。结果表明,本方法有足够的精度.
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| 关 键 词： | 桥梁 桁架 应力 桥门联结系 |
Practical Three-Dimensional Analysis for Sway Bracings in Truss Bridges |
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| Huang Jian Shi Dong Li Mingzhao.Practical Three-Dimensional Analysis for Sway Bracings in Truss Bridges[J].Journal of Tongji University(Natural Science),1986(3). |
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| Authors: | Huang Jian Shi Dong Li Mingzhao |
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| Institution: | Research Institute of Engineering Structure |
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| Abstract: | In this paper, a finite element method of beam elements is presented for analysing truss bridges according to the theory of bending and torsion of truss bridges proposed by Li Guohao. Based on it, analyses of two types of simply supported steel truss bridges used in railway, in particular, the behavior of their sway bracings are carried out, and practical approximate formulas for sway bracing shear force H are obtained. In order to test the reliability of the FEM of beam elements, the results obtained by this kind of FEM are compared with those by the FEM of space bar system and those from a model test. It is shown that this method can be applied with sufficient accuracy in civil engineering. |
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| Keywords: | Bridge Truss Strpss Portal Bracing |
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