| 天兴洲三主桁斜拉桥不同主梁纵向约束方式结构特性分析 |
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| 引用本文： | 罗许国,戴公连.天兴洲三主桁斜拉桥不同主梁纵向约束方式结构特性分析[J].湖南科技大学学报(自然科学版),2007,22(3):66-70. |
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| 作者姓名： | 罗许国 戴公连 |
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| 作者单位： | 1. 中南大学,土木建筑学院,湖南,长沙,410075;湖南科技大学,土木工程学院,湖南,湘潭,411201
2. 中南大学,土木建筑学院,湖南,长沙,410075 |
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| 摘 要： | 结合拟建的天兴洲三主桁公铁两用结合梁斜拉桥,建立了大跨度公铁两用斜拉桥空间计算模型,并对其在恒载、活载、温度作用下静力性能进行了研究.重点探讨了不同主梁纵向约束方式对大跨度公铁两用斜拉桥静力性能的影响以及主梁合理纵向约束刚度.计算结果表明:对主梁设置合理纵向约束刚度,能使结构的受力性能得到改善.图2,表17,参5.
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| 关 键 词： | 纵向约束方式 公铁两用斜拉桥 结构特性 三主桁 |
| 文章编号： | 1672-9102（2007）03-0066-05 |
| 收稿时间： | 2007-03-09 |
| 修稿时间： | 2007-03-09 |
Structural System Analysis of Different Longitudinal Restraint Conditions in Main Girder on Tianxingzhou Three-Truss Cable Statyed Bridge |
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| LUO Xu-guo,DAI Gong-lian.Structural System Analysis of Different Longitudinal Restraint Conditions in Main Girder on Tianxingzhou Three-Truss Cable Statyed Bridge[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2007,22(3):66-70. |
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| Authors: | LUO Xu-guo DAI Gong-lian |
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| Institution: | 1. School of Civil Engineering and Architecture, Central South University, Changsha 410075, China ; 2. School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China |
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| Abstract: | On the background of a highway/railway combined composite girder three-truss cable- stayed bridge which will be built. The three dimensional model of the long span combined road and railway cable stayed bridge was established and the static characteristics of structure, under the dead load,live load and temperature load, was discussed. The effect of different longitudinal restraint conditions was research, that in the main girder on the the static characteristics of the structure and reasonable longitudinal restraint rigidity .The result shows that the characteristics of the structure are improved obviously if the main girders have reasonable longitudinal restraint rigidity. 2figs., 17tabs., 5refs. |
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| Keywords: | longitudinal restraint conditions road and railway cable-stayed bridge structural characteristics three trusses |
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