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STUDY On the Settlement Characteristics of CFG Pile-plate Composite Foundation of High-speed Railway
| 题名： | STUDY On the Settlement Characteristics of CFG Pile-plate Composite Foundation of High-speed Railway |
| 正文语种： | 中文 |
| 作者： | Ming ZHU Kuangdai LENG Jianlin MA |
| 作者单位： | School of ivil Engineering,Southwest Jiaotong University, hengdu 610031,Sichuan, hina State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084, hina |
| 关键词： | high-speed railway CFG pile-plate composite foundation settlement characteristics field test |
| 摘要： | Field tests of settlement characteristics were carried out on the CFG pile-plate composite foundation on Beijing-Xuzhou section of Beijing-Shanghai high-speed railway.The settlements of the piles and soil between piles,the subgrade and the underlying stratum were obtained and analyzed.The results show that the settlement-time dependencies experiences three phases-rapid development phase,stable development phase and stable phase,therefore,surcharge preloading is necessary to reduce the settlement after construction.The finite element software Plaxis is applied to calculate the deformation of the pile top and the soil between piles at the embankment center as well as the settlement of CFG pile reinforcement area and the underlying stratum under surcharge preloading.The calculating results and the field test results were comparatively and comprehensively analyzed and the settlement characteristics of pile-plate composite foundation under high embankment are concluded. |
| 会议日期： | 20091128 |
| 会议举办地点： | 成都 |
| 会议名称： | 高速铁路、线路工程设计理论、施工及养护技术国际学术会议 |
| 出版日期： | 2009-11-28 |
| 母体文献： | 高速铁路、线路工程设计理论、施工及养护技术国际学术会议论文集 |
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