| 大跨度钢斜拉桥扁平钢箱梁悬拼阶段相对变形研究 |
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| 引用本文： | 郝超,邱松定.大跨度钢斜拉桥扁平钢箱梁悬拼阶段相对变形研究[J].钢结构,2002,17(2):34-37. |
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| 作者姓名： | 郝超 邱松定 |
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| 作者单位： | 1. 浙江大学,杭州,310027
2. 浙江鼎盛交通建设有限公司,绍兴,312069 |
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| 摘 要： | 大跨度斜拉桥大多采用流线形扁平钢箱梁 ,在主梁悬臂拼装过程中 ,吊机作用梁段、被起吊梁段由于受力不同 ,变形存在较大差异。以南京长江第二大桥南汊桥为例 ,用空间有限元分析了悬拼阶段扁平钢箱梁的相对变形 ,并研究了温度、纵隔板设置、吊机作用位置对相对变形的影响 ,对钢箱梁制造、安装提出了一些有益的建议
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| 关 键 词： | 钢斜拉桥 扁平钢箱梁 悬臂拼装 相对变形 温度影响 纵隔板 |
| 修稿时间： | 2001年10月21 |
THE RELATIVE DEFORMATION STUDY OF FLAT STEEL BOX-SHAPED GIRDER OF LONG-SPAN CABLE-STAYED BRIDGE DURING CANTILEVER CONSTRUCTION |
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| Hao,Chao,Qiu,Songding.THE RELATIVE DEFORMATION STUDY OF FLAT STEEL BOX-SHAPED GIRDER OF LONG-SPAN CABLE-STAYED BRIDGE DURING CANTILEVER CONSTRUCTION[J].Steel Construction,2002,17(2):34-37. |
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| Authors: | Hao Chao Qiu Songding |
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| Abstract: | Now many long span cable stayed bridges adopt stream lined flat steel box shaped girder.During cantilever construction of girder,the deformation of flat steel box shaped girder is obviously different between box shaped girder to be suspended and the box shaped girder supporting crane.Taking Nanjing Second Yangtz Bridge as a numerical example,using spatial FEM,the relative deformation of flat steel box shaped girder is analyzed,and the influence of temperature,setting of longitudinal plate and position of crane to the relative deformation is studied.Some suggestions of manufacture and construction of steel box shaped girder are given here. |
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| Keywords: | steel cable stayed bridge flat steel box shaped girder cantilever construction relative deformation influence of temperature longitudinal plate |
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