| 新疆伊犁南岸干渠黄土渠段湿陷性分析 |
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| 引用本文： | 邢誉峰,杨阳.新疆伊犁南岸干渠黄土渠段湿陷性分析[J].力学学报,2008,40(2):222-228. |
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| 作者姓名： | 邢誉峰 杨阳 |
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| 作者单位： | 北京航空航天大学固体力学所 北京航空航天大学固体力学所 |
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| 摘 要： | 基于势能原理，根据梁单胞在单位弯矩作用下的静力特性分析，提出了一种允许单元内
部存在材料和几何性质不连续的新的梁特征单元，称之为弯矩梁特征单元. 与已有特征单元方法、
均匀化方法和一般有限元方法进行了数值比较和分析，位移、内力和频率结果说明了弯矩梁
特征单元在精度和效率方面的优越性. 弯矩梁特征单元具有双尺度特征，为构造编织等周期
性复合材料结构的宏细观力学行为分析提供了一种思想和方法.
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| 关 键 词： | 渠道 黄土 湿陷性 降雨入渗 非饱和 新疆 |
| 文章编号： | 0459-1879（2008）02-0222-07 |
| 收稿时间： | 2007-05-30 |
| 修稿时间： | 2007-09-17 |
A BENDING MOMENT BEAM EIGENELEMENT WITH PIECEWISE SHAPE FUNCTIONS |
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| Xing Yufeng,Yang Yang.A BENDING MOMENT BEAM EIGENELEMENT WITH PIECEWISE SHAPE FUNCTIONS[J].chinese journal of theoretical and applied mechanics,2008,40(2):222-228. |
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| Authors: | Xing Yufeng Yang Yang |
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| Affiliation: | The Solid Mechanics Research Center, Beihang University, Beijing 100083, China The Solid Mechanics Research Center, Beihang University, Beijing 100083, China |
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| Abstract: | There is a great area of loses along the Yili trunk ditch in Xinjiang province. The collapsibility of the losses with water has a great impact to construction in the region. On the basis of many tests, a detailed analysis about the grade, the initial pressure and the depth of loess collapaibilty, and the degree of loess collapaibilty along the ditch built by excavating is given in this paper. A deep analysis is also made to the collapaibilty along the ditch built by piling considering the unsaturation of loess. It reveals the grade of collapssility is Ⅰ～Ⅱ and belongs to the non-self-weight collapse loess in the field along the ditch and the loess would lose collapssility after being compacted. It is also found that the loess would lose its collapssility only by permutation and drainage. Other measures are not needed to remove the loess collapssility. |
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| Keywords: | eigenelement beam bending moment composite multi-scales |
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