| 用桩加固浅基础的力学模型研究 |
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| 引用本文： | 孙广臣,文方针,文雨松.用桩加固浅基础的力学模型研究[J].铁道科学与工程学报,2007,4(2):67-71. |
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| 作者姓名： | 孙广臣 文方针 文雨松 |
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| 作者单位： | 1. 中南大学,土木建筑学院,湖南,长沙,410075
2. 广东省公路勘察规划设计院,广东,广州,510507 |
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| 基金项目： | 广东省交通集团科技项目 |
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| 摘 要： | 对用桩加固既有铁路桥梁中浅基础常用计算方法进行比较,认为此类结构应考虑承台结构的变形,并提出了合乎实际情况的力学模型。实例计算与比较分析结果表明,由于用桩加固浅基础时其承台结构的特殊性,竖向荷载对桩身弯矩有较大影响。此外,给出了考虑承台变形和竖向荷载的影响时,浅基础用桩加固的力学模型计算公式。
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| 关 键 词： | 浅基 力学模型 内力计算 |
| 文章编号： | 1672-7029（2007）02-0067-05 |
| 修稿时间： | 2006-12-11 |
Researches on the mechanical model of the shallow foundation reinforcement by pile-foundation |
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| SUN Guang-chen,WEN FANG-zhen,WEN Yu-song.Researches on the mechanical model of the shallow foundation reinforcement by pile-foundation[J].Journal of Railway Science and Engineering,2007,4(2):67-71. |
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| Authors: | SUN Guang-chen WEN FANG-zhen WEN Yu-song |
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| Affiliation: | 1. School of Civil and Architectural Engineering, Central South University, Changsha 410075, China; 2.Guangdong Highway Design Institute, Guangzhou 510507, China |
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| Abstract: | Comparison of common methods of the shallow foundation reinforcement by pile-foundation in the existed railway bridges was carried out,and a mechanical model which was consistent with the practical condition was presented.Calculation formula on the mechanical model with the consideration of the platform deformation and the influence of vertical load were given.The result shows that the platform deformation in this kind of structures should be considered.There is a significant effect of vertical load on the bending moment of the piles due to the particularities of the reinforcement by pile-foundation. |
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| Keywords: | shallow foundation mechanical model calculation of internal force |
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