| 基于土体三相性计算单桩竖向承载力的理论分析 |
| |
| 引用本文： | 乐琪浪,叶赞,林承灏.基于土体三相性计算单桩竖向承载力的理论分析[J].路基工程,2011,0(3):159-161,165. |
| |
| 作者姓名： | 乐琪浪 叶赞 林承灏 |
| |
| 作者单位： | 1.中国地质调查局水文地质环境地质调查中心, 河北保定 071051 |
| |
| 摘 要： | 建筑桩基技术规范公式得出的单桩竖向承载力在部分工程中与实际偏差较大。桩侧摩擦力公式中土层厚度li直接取单层土层的厚度,而未考虑土层的三相性,实际对桩提供有效摩擦阻力的只是土颗粒的作用,规范以整体提供摩擦阻力的计算法存在缺陷。基于土体三相性考虑,建立桩侧与土的物理力学模型计算单桩竖向承载力,分析得出计算式。通过工程试验与分析结果认为:桩侧有效摩擦厚度与土层的厚度以孔隙比建立其关系,桩侧摩阻力与土层孔隙比的大小成反比,计算结果与实际值吻合较好。
|
| 关 键 词： | 土体三相性 物理模型 单桩竖向承载力 桩侧阻力 |
| 收稿时间： | 2019-11-11 |
Theoretical Analysis on Calculating Vertical Bearing Capacity of Single Pile Base on Tri-phase of Soil |
| |
| Authors: | LE Qi-lang YE Zan LIN Cheng-hao |
| |
| Institution: | LE Qi-lang1,YE Zan2,LIN Cheng-hao3(1.Center of Hydrogeology and Environmental Geology,China Geological Survey,Baoding 071051,Hebei,China,2.Panbei Mine of Huainan Mining Group,Huainan 232001,Anhui,3.School of Earth and Environment,Anhui University of Technology,China) |
| |
| Abstract: | Vertical bearing capacity values of single pile obtained from the formula specified in technical specification for building pile foundation is very different from the actual values in some engineering projects.In the formula of pile shaft friction,soil thickness li is just the single layer thickness without considering the tri-phase of soil.Through analyzing the component of soil,only soil particles provide effective friction to the pile,but the formula considers all the soil provide friction to the pile,wh... |
| |
| Keywords: | tri-phase property physical model vertical bearing capacity of single pile pile shaft resistance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《路基工程》浏览原始摘要信息 |
| 点击此处可从《路基工程》下载免费的PDF全文 |
|
