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| Multifield coupling model and its applications for pile foundation in permafrost | |
| 引用本文： | WU Yaping1,2,ZHU Yuanlin2,GUO Chunxiang1,SU Qiang1 & MA Wei2 1. School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China, 2. State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China. Multifield coupling model and its applications for pile foundation in permafrost[J]. 中国科学D辑(英文版), 2005, 48(7). DOI: 10.1360/082004-175 |
| 作者姓名： | WU Yaping1 2 ZHU Yuanlin2 GUO Chunxiang1 SU Qiang1 & MA Wei2 1. School of Civil Engineering Lanzhou Jiaotong University Lanzhou 730070 China 2. State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China |
| 作者单位： | WU Yaping1，2，ZHU Yuanlin2，GUO Chunxiang1，SU Qiang1 & MA Wei2 1. School of Civil Engineering，Lanzhou Jiaotong University，Lanzhou 730070，China; 2. State Key Laboratory of Frozen Soil Engineering，Cold and Arid Regions Environmental and Engineering Research Institute，Chinese Academy of Sciences，Lanzhou 730000，China |
| 基金项目： | 国家自然科学基金，国家重点实验室基金 |
| 摘 要： | In the construction of Qinghai-Tibet railway,to avoid diseases caused by frost heave and thaw col-lapse of frozen ground,besides the normal bridges over the rivers,a lot of dry bridge structures have been built to replace subgrade in the regions of high tem-perature and high ice content frozen soil.So,the problems on forming mechanism of bearing capacity of pile foundation in cold regions already become one of hot spot problems in frozen soil engineering.Freezing force and frost heave force ar… |
Multifield coupling model and its applications for pile foundation in permafrost |
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| Wu Yaping,Zhu Yuanlin,GUO Chunxiang,SU Qiang,MA Wei. Multifield coupling model and its applications for pile foundation in permafrost[J]. Science in China(Earth Sciences), 2005, 48(7). DOI: 10.1360/082004-175 | |
| Authors: | Wu Yaping Zhu Yuanlin GUO Chunxiang SU Qiang MA Wei |
| Affiliation: | 1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China 3. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
| Abstract: | Importing the interface element which links the frozen soil base with concrete piles and considering the couplings of stress field, temperature field and moisture field, this paper es- tablishes the nonlinear visco-elastic plastic finite element model of pile-soil. For a practical bridge structure the stress field and displacement field of single pile in freezing process are calculated. This paper emphatically studies the process of the tangential frost heave stress field, freezing stress field and displacement field varying with time, and ulteriorly studies time variation process of single pile carrying capacity in freezing process. |
| Keywords: | permafrost pile foundation freezing process multifield coupling analysis model. |
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