| 围堰施工中封底混凝土厚度的有限元法求解 |
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| 引用本文： | 李胜臣,朱东生.围堰施工中封底混凝土厚度的有限元法求解[J].兰州铁道学院学报,2006,25(3):30-32. |
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| 作者姓名： | 李胜臣 朱东生 |
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| 作者单位： | 兰州交通大学,土木工程学院,甘肃,兰州,730070;兰州交通大学,土木工程学院,甘肃,兰州,730070 |
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| 摘 要： | 铁路工程中,深水处的桥梁基础、墩台多采用围堰施工.在需要用混凝土封底时,其厚度通常采用浮力和强度公式计算,所得结果偏大.本文考虑了围堰施工工艺的特殊性,建立了桩基约束模型.采用有限元法求解,得到了比较好的结果,既降低了混凝土的消耗量,又缩短了施工工期.
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| 关 键 词： | 桥梁 围堰施工 封底混凝土厚度 有限元求解 |
| 文章编号： | 1001-4373(2006)03-0030-03 |
| 收稿时间： | 2005-10-31 |
| 修稿时间： | 2005年10月31 |
FEM Solution of Bottoming Concrete Thickness in Underwater Cofferdam Construction |
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| Li Shengchen,Zhu Dongsheng.FEM Solution of Bottoming Concrete Thickness in Underwater Cofferdam Construction[J].Journal of Lanzhou Railway University,2006,25(3):30-32. |
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| Authors: | Li Shengchen Zhu Dongsheng |
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| Institution: | School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070,China |
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| Abstract: | In the railway engineering,the method of cofferdam construction is usually adopted in the bridge base,pier and abutment in deep-water.When the bottom of cofferdam needs to be sealed with concrete,the thickness of concrete slab is calculated by calculating formulas of buoyancy and intensity.The result is bigger.Considering the particularity of construction technology of underwater cofferdam,the model of concrete slab restrainted by the piles is established.A good result has been achieved by using the FEM solution in reducing consumption of concrete and cutting down construction time. |
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| Keywords: | bridge cofferdam construction bottoming concrete thickness finite element method solution |
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