| 某天桥顶部组合拱架结构的地震响应分析 |
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| 引用本文： | 丁国盛. 某天桥顶部组合拱架结构的地震响应分析[J]. 科学之友, 2008, 0(11): 3-5 |
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| 作者姓名： | 丁国盛 |
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| 作者单位： | 中铁六局太原铁建,山西,太原,030012 |
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| 摘 要： | 文章以某景观过街天桥的造型部分——61m跨度组合拱架为研究对象，建立空间计算模型，并应用ANSYS有限元程序对该桁架的自振特性及谱响应进行了分析。结果表明：结构的自振以整体平动为主；结构的地震响应沿X-Z平面对称，并以弯矩为主；结构在地震作用沿X轴方向输入时的响应最大；主拱交点处的截面最薄弱。
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| 关 键 词： | 组合拱桁架 有限元分析 地震响应 天桥 人行桥 |
| 文章编号： | 1000-8136(2008)04-0003-03 |
Technical Mechanism and Engineering Practice of Excessively Wet Soil Treatment |
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| Ding Guosheng. Technical Mechanism and Engineering Practice of Excessively Wet Soil Treatment[J]. Friend of Science Amateurs, 2008, 0(11): 3-5 |
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| Authors: | Ding Guosheng |
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| Affiliation: | Li Haiwang, Song Xiaofeng |
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| Abstract: | Focusing on 61m-span arch truss unit -- the form part of the across-street platform bridge in a landscape- as a research object, space calculation model is established and vibration characteristics and spectral response of the truss is analyzed by AN- SYS finite element program. The results show that： the vibration of structure is mainly level moving as a whole; earthquake response of structure is symmetrical along X-Z plane and is mainly the moment; earthquake response of the structure is the strongest along the X axis and the weakest at the cross-section of the intersection of the main arch. |
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| Keywords: | arch truss unit i＇mite element analysis earthquake response |
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