| 不同计算模型下大跨度斜拉桥静动力对比分析 |
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| 引用本文： | 江定宇,郭健,孙炳楠. 不同计算模型下大跨度斜拉桥静动力对比分析[J]. 中国市政工程, 2011, 0(1): 60-63. DOI: 10.3969/j.issn.1004-4655.2011.01.022 |
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| 作者姓名： | 江定宇 郭健 孙炳楠 |
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| 作者单位： | 1. 浙江大学建筑工程学院,浙江,杭州,310058;浙江大学宁波理工学院,浙江,宁波,315100
2. 浙江大学宁波理工学院,浙江,宁波,315100;浙江省舟山连岛工程建设指挥部,浙江,舟山,316000 |
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| 基金项目： | 国家自然科学基金(50808160); 宁波市自然科学基金(2008A610102) |
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| 摘 要： | 以某大跨度跨海斜拉桥为研究对象,介绍了索塔、斜拉索、桥面系和边界条件的有限元建模方法。索塔和斜拉索采用相同的建模方法,桥面系采用了单主梁模型、三主梁模型及梁板组合模型3种不同的建模方法。列出了该桥梁静力位移、主梁应力状态的计算结果。通过对计算数据的比较,指出了3种有限元模型计算结果的差异,并对造成差异的原因进行了分析。将3种计算模型的前12阶频率与实测频率进行对比,得出采用梁板组合模型的结果更精确,而单主梁模型与三主梁模型的模拟方式在一定意义上是等效的。
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| 关 键 词： | 大跨度斜拉桥 钢箱梁 斜拉桥 有限元模型 剪力滞系数 |
Static & Dynamic Comparative Analysis of Large-span Cable-stayed Bridge Based on Different Computation Models |
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| JIANG Ding-yu,GUO Jian,SUN Bing-nan. Static & Dynamic Comparative Analysis of Large-span Cable-stayed Bridge Based on Different Computation Models[J]. China Municipal Engineering, 2011, 0(1): 60-63. DOI: 10.3969/j.issn.1004-4655.2011.01.022 |
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| Authors: | JIANG Ding-yu GUO Jian SUN Bing-nan |
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| Affiliation: | JIANG Ding-yu1,2,GUO Jian2,3,SUN Bing-nan1,2 (1.College of Civil Engineering & Architecture,Zhejiang University,Hangzhou 310058,China,2.Ningbo Institute of Technology,Ningbo 315100,3.Zhejiang Provincial Construction Headquarters of Zhoushan Link Islands Project,Zhoushan 316000,China) |
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| Abstract: | With a large-span cross-sea cable-stayed bridge as the research object,the finite element modeling methods of the towers,cables,bridge deck system and boundary condition are introduced in this paper.The tower and cable share the same modeling method;the bridge deck system adopts 3 kinds of modeling methods including the single-girder model,triple-girder model and plate-beam composite model.The calculations of static force displacement and main girder stress state are presented.After a comparison of these da... |
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| Keywords: | large-span cable-stayed bridge steel box girder cable-stayed bridge finite element model shear lag coefficient |
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