Arching in geogrid-reinforced pile-supported embankments over silty clay of medium compressibility: Field data and analytical solution
文献类型：期刊论文
| 作者 | Zhang, Chonglei1,2,3 ; Jiang, Guanlu3; Liu, Xianfeng2,3; Buzzi, Olivier2
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| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2016-07-01 |
| 卷号 | 77页码:11-25 |
| 关键词 | Arching effect Analytical method Load transfer Embankment Piles Field test |
| ISSN号 | 0266-352X |
| 通讯作者 | Liu, Xianfeng |
| 英文摘要 | The objective of this study is to improve the understanding of load transfer mechanism of Geogrid-Reinforced Pile-Supported Embankments (GRPS) via a new 3D analytical approach and comprehensive field tests. A full-scale embankment was built over a silty clay of medium compressibility as a part of the Liuzhou-to-Nanning High-speed Railway (LNHR) in China. Six sections of the embankment have been heavily instrumented producing comprehensive data of high quality. Field measurements evidence the existence of soil arching, membrane contribution and ground reaction, phenomena that are all contributing to load transfer mechanism. The new 3D analytical arching model accounts for a triangular arrangement of piles and, unlike existing methods, accounts for all relevant components of load transfer mechanisms. In addition, two key parameters were introduced in the model: an elastoplastic state parameter of soil arching (alpha) and a coefficient of equivalent uniform stress (beta). The former was used to satisfy the load equilibrium in case of partial arching while the latter was adopted to allow possible nonuniform vertical stress acting on the ground surface. The so-called ground reaction method was incorporated in an innovative manner to take into account the reactive support of the subsoil beneath geogrid-reinforced layer when estimating the tension development in the geogrid. Finally, the performance of the proposed model was assessed against several existing models and field measurements. Results showed that the new model presented herein outperforms existing models and satisfactorily predicts both the pile efficiency and tension development within the geogrid. (C) 2016 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Computer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary |
| 研究领域[WOS] | Computer Science ; Engineering ; Geology |
| 关键词[WOS] | MODEL EXPERIMENTS ; MARINE CLAY ; SOIL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000377325600002 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/17379]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China 2.Univ Newcastle, Fac Engn & Built Environm, Prior Res Ctr Geotech & Mat Modelling, Callaghan, NSW 2308, Australia 3.Southwest Jiaotong Univ, Sch Civil Engn, Minist Educ, Key Lab High Speed Railway Engn, Chengdu 610031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Chonglei,Jiang, Guanlu,Liu, Xianfeng,et al. Arching in geogrid-reinforced pile-supported embankments over silty clay of medium compressibility: Field data and analytical solution[J]. COMPUTERS AND GEOTECHNICS,2016,77:11-25. |
| APA | Zhang, Chonglei,Jiang, Guanlu,Liu, Xianfeng,&Buzzi, Olivier.(2016).Arching in geogrid-reinforced pile-supported embankments over silty clay of medium compressibility: Field data and analytical solution.COMPUTERS AND GEOTECHNICS,77,11-25. |
| MLA | Zhang, Chonglei,et al."Arching in geogrid-reinforced pile-supported embankments over silty clay of medium compressibility: Field data and analytical solution".COMPUTERS AND GEOTECHNICS 77(2016):11-25. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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