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| 南水北调工程渡槽结构复合弯扭相关性分析 | |
| 引用本文： | 胡少伟,游日,涂启华. 南水北调工程渡槽结构复合弯扭相关性分析[J]. 灌溉排水学报, 2009, 28(3) |
| 作者姓名： | 胡少伟 游日 涂启华 |
| 作者单位： | 胡少伟,游日,HU Shao-wei,YOU Ri(南京水利科学研究院材料结构研究所,南京,210024;湖北省水电工程施工与管理重点实验室(三峡大学),湖北宜昌443002);涂启华,TU Qi-hua(南京水利科学研究院材料结构研究所,南京,210024) |
| 基金项目： | 湖北省水电工程施工与管理重点实验室(三峡大学)开放基金 |
| 摘 要： | 研究了南水北调工程中箱型和U型二种渡槽的复合弯扭相关性。在综合分析的基础上,分别对箱型和U型二种渡槽单一荷载下和复合弯扭下进行了分析,得到了相关性方程,并进行了分析比较。得出二种渡槽受纯弯时,荷载-位移曲线有明显的屈服平台,而纯扭时,屈服分界不明显。一定扭矩的存在可提高渡槽的极限抗弯强度,且箱型截面极限抗弯强度的提高程度比U型截面的大15%~20%,但扭矩过小或过大都会使极限抗弯强度下降,二种渡槽极限抗弯强度的减幅基本相同。弯矩的存在会降低极限抗扭强度,弯矩越大,极限抗扭强度减幅越大。破坏形态在扭弯比较大时,与纯扭试件相似,而在扭弯比较小时,与纯弯试件相似。得出的复合弯扭相关性的方程可为渡槽的设计提供参考。 |
| 关 键 词： | 南水北调工程 箱型渡槽 U型渡槽 复合弯扭分析 |
Bending-Torsion Relativity Analysis of Aqueducts in the South-to-North Water Diversion Project |
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| HU Shao-wei,YOU Ri,TU Qi-hua,Yichang ,China). Bending-Torsion Relativity Analysis of Aqueducts in the South-to-North Water Diversion Project[J]. Journal of Irrigation and Drainage, 2009, 28(3) | |
| Authors: | HU Shao-wei YOU Ri TU Qi-hua Yichang China) |
| Affiliation: | HU Shao-wei1,2,YOU Ri1,TU Qi-hua1(1.Department of Materials and Structural Engineering,Nanjing Hydraulic Research Institute,Nanjing 210024,China,2.Hubei Key Laboratory of Construction and Management in Hydropower Engineering(China Three Gorges University),Yichang 443002,China) |
| Abstract: | Analysis on bending-torsion relativity of two section types of aqueducts in the South-to-North Water Diversion Project,box-shape and U-shape,is presented in this paper.By calculating the finite element models of the two types of aqueducts under single load and combined load,the relativity formula was obtained.Comparing the results of FEM analysis,it shows that: obvious yield point elongation was observed in load-displacement curves when both aqueducts were under pure bending,while the curves were more slick... |
| Keywords: | the South-to-North Water Diversion Project box-typed aqueduct U-typed aqueduct combined bending-torsion analysis |
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