| 不均匀土中有限长桩的横向瞬态波动 |
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| 引用本文： | 余云燕, 陈云敏. 不均匀土中有限长桩的横向瞬态波动[J]. 固体力学学报, 2005, 26(4): 429-433. doi: 10.3969/j.issn.0254-7805.2005.04.008 |
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| 作者姓名： | 余云燕 陈云敏 |
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| 作者单位： | 兰州交通大学土木工程学院,兰州,730070; 浙江大学岩土工程研究所,杭州,310027 |
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| 基金项目： | 兰州交通大学“青蓝”人才工程基金（QL0507A）资助. |
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| 摘 要： | 将Timoshenko梁模型引入到弹性地基梁中,土体对桩的作用用连续分布的弹簧来模拟,基于回传射线矩阵法,研究了桩顶受到横向冲击荷载作用下有限长桩的横向瞬态波动.经参数分析表明:土体刚度比对上软下硬、上硬下软两层地基中的有限长桩剪力波和弯矩波影响很大;从挠曲波曲线中难以辨别有无软硬夹层.
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| 关 键 词： | 回传射线矩阵法 弹性地基梁 挠曲波 桩 Timoshenko梁 |
| 收稿时间： | 2004-09-01 |
| 修稿时间： | 2005-07-11 |
FLEXURAL WAVE OF FINITE PILE IN A NON-UNIFORM SOIL |
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| Yu Yunyan, Chen Yunmin. FLEXURAL WAVE OF FINITE PILE IN A NON-UNIFORM SOIL[J]. Chinese Journal of Solid Mechanics, 2005, 26(4): 429-433. doi: 10.3969/j.issn.0254-7805.2005.04.008 |
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| Authors: | Yu Yunyan Chen Yunmin |
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| Affiliation: | 1. The Institute of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, 730070; 2. The Geotechnical Institute, Zhejiang University, Hangzhou, 310027 |
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| Abstract: | The Timoshenko beam resting on an elastic foundation is introduced to model a pile in a layered soil. The action of soil to pile is simulated by means of continuous distribution springs. Based on the reverberationray matrix, the flexural wave of finite pile caused by lateral impact load at the pile head is studied. Parametric analysis shows that the soil stiffness ratio has great effect on the moment wave and shear force wave of the finite pile in an upper-soft-and-lower-hard or upper-hard-and-lower-soft two-layered soil. Both the soft-sandwich soil and the hard-sandwich soil can result in the same flexural wave. |
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| Keywords: | reverberalion-ray matrix elastic foundation beam flexural wave pile Timoshenko beam |
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