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Centrifuge Model Tests on Setllment Controlling of Piled Raft Composite Foundation in High Speed Railway
| 题名： | Centrifuge Model Tests on Setllment Controlling of Piled Raft Composite Foundation in High Speed Railway |
| 正文语种： | 中文 |
| 作者： | Changdan WANG Xu WANG Shunhua ZHOU inglong WANG |
| 作者单位： | Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804, hina School of ivil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu, hina |
| 关键词： | subgrade engineering collapsible loess piled raft composite foundation centrifuge model test settlement |
| 摘要： | The settlement after construction controlling of subgrade is a crucial issue on designing of high speed railway.Based on the experimental study at home and abroad,the centrifuge model test is used to imitate piled raft composite foundation in different pile spacing,to research and analyze the settlement controlling ability of piled raft composite foundation in collapsible loess ground in high speed railway.Then the relationship between pile,grawel cushion,soil between piles and raft structure controlling the settlement are concluded by analyzing the test data.The research results show that untreated ground which can not meet the request on settlement after construction in ballasted track in high speed railway need be reinforced.The total settlement,settlement after construction and settlement ratio of piled raft composite foundation get larger with the extending of pile spacing.The settlement of soil is faster and more increasing than settlement of pile,and pile-soil load share ratio get lower and negative skin friction of pile get more increasing. |
| 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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