| 悬臂式无支撑板桩支护基坑变形性状有限元分析 |
| |
| 引用本文： | 闾成德.悬臂式无支撑板桩支护基坑变形性状有限元分析[J].江苏建筑,2009(2). |
| |
| 作者姓名： | 闾成德 |
| |
| 作者单位： | 扬州工业职业技术学院建筑工程系,江苏扬州,225000 |
| |
| 摘 要： | 不同开挖宽度与深度比条件下悬臂式无支撑板桩支护结构与周围土体的变形特性将发生变化.采用二维有限元方法分析了不同开挖宽度与深度比(L/D)条件下无支撑悬臂开挖基坑的变形性状,详细探讨了开挖宽度与深度比对地表沉降、地表水平位移、坑底隆起、坑底水平位移及支护结构侧向变形的影响.计算结果表明:在基坑开挖深度不变的条件下,地表沉降量、坑底隆起量及坑底水平位移量均随L/D的增加呈非线性增长,开始增长迅速,当L/D达一定值后数值几乎不再变化;地表水平位移量随L/D的增加先减小后增大:支护结构侧向变形随L/D的增加逐步由顶端内倾型过渡到整体向坑内移动的顶端外倾型,L/D越大,围护结构的整体侧向位移越大.
|
| 关 键 词： | 基坑 有限元 变形 沉降 隆起 侧移 |
Finite Element Analysis on Deformation Characteristics of Cantilever Retaining Structures and Ground without Plate Piles |
| |
| LV Cheng-de.Finite Element Analysis on Deformation Characteristics of Cantilever Retaining Structures and Ground without Plate Piles[J].Jiangsu Construction,2009(2). |
| |
| Authors: | LV Cheng-de |
| |
| Affiliation: | Department of Civil Engineering;Yangzhou College of Industrial Technology;Yangzhou Jiangsu 225000 China |
| |
| Abstract: | The excavation width of some deep foundations and underground structures ranges from several to hundreds of meters in engineering. The deformation characteristics of the retaining structures and ground of these deep excavations vary with the excavation width. The two-dimensional finite element method was adopted to investigate the deformation characteristics of retaining structures and ground with different ratios of the excavation depth to the excavation width. The numerical results show that the magnitude... |
| |
| Keywords: | foundation pit FEM deformation settlement basal heave lateral displacement |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
