Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings Dam
Cement fly-ash gravel (CFG) pile is a widely used ground reinforcement technique. This paper aims to address the mechanical characteristics of CFG composite foundation in consolidating saturated mine tailings (MTs) dam. The field static load tests were employed to explore the bearing capacity of the...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/3948754 |
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| author | Jinxing Lai Houquan Liu Junling Qiu Haobo Fan Qian Zhang Zhinan Hu Junbao Wang |
| author_facet | Jinxing Lai Houquan Liu Junling Qiu Haobo Fan Qian Zhang Zhinan Hu Junbao Wang |
| author_sort | Jinxing Lai |
| collection | DOAJ |
| description | Cement fly-ash gravel (CFG) pile is a widely used ground reinforcement technique. This paper aims to address the mechanical characteristics of CFG composite foundation in consolidating saturated mine tailings (MTs) dam. The field static load tests were employed to explore the bearing capacity of the CFG composite foundation, and finite element (FE) models in three dimensions validated through comparison with experimental results were used to discuss the pile-soil stress distribution and pile-soil stress ratio of the CFG composite foundation. The results indicate that the distribution of earth pressure and pile stress is relatively homogeneous and stable over depth and load, while the development of CFG composite foundation bearing capacity is insufficient, in which the developed bearing capacity of CFG piles is less than 50% of its characteristic value. Additionally, compared with the laboratory model test results, the pile-soil stress ratio decreases with the increasing of the load in FEM results proved to better conform to the actual engineering conditions. Furthermore, the deformation modulus and thickness of cushion exert significant influence on pile-soil stress ratio and integral bearing capacity of CFG composite foundation. |
| format | Article |
| id | doaj-art-7ccf27426e864725b9bb46ffa9fd6cb0 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-7ccf27426e864725b9bb46ffa9fd6cb02025-02-03T05:57:39ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422016-01-01201610.1155/2016/39487543948754Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings DamJinxing Lai0Houquan Liu1Junling Qiu2Haobo Fan3Qian Zhang4Zhinan Hu5Junbao Wang6School of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaSchool of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaCement fly-ash gravel (CFG) pile is a widely used ground reinforcement technique. This paper aims to address the mechanical characteristics of CFG composite foundation in consolidating saturated mine tailings (MTs) dam. The field static load tests were employed to explore the bearing capacity of the CFG composite foundation, and finite element (FE) models in three dimensions validated through comparison with experimental results were used to discuss the pile-soil stress distribution and pile-soil stress ratio of the CFG composite foundation. The results indicate that the distribution of earth pressure and pile stress is relatively homogeneous and stable over depth and load, while the development of CFG composite foundation bearing capacity is insufficient, in which the developed bearing capacity of CFG piles is less than 50% of its characteristic value. Additionally, compared with the laboratory model test results, the pile-soil stress ratio decreases with the increasing of the load in FEM results proved to better conform to the actual engineering conditions. Furthermore, the deformation modulus and thickness of cushion exert significant influence on pile-soil stress ratio and integral bearing capacity of CFG composite foundation.http://dx.doi.org/10.1155/2016/3948754 |
| spellingShingle | Jinxing Lai Houquan Liu Junling Qiu Haobo Fan Qian Zhang Zhinan Hu Junbao Wang Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings Dam Advances in Materials Science and Engineering |
| title | Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings Dam |
| title_full | Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings Dam |
| title_fullStr | Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings Dam |
| title_full_unstemmed | Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings Dam |
| title_short | Stress Analysis of CFG Pile Composite Foundation in Consolidating Saturated Mine Tailings Dam |
| title_sort | stress analysis of cfg pile composite foundation in consolidating saturated mine tailings dam |
| url | http://dx.doi.org/10.1155/2016/3948754 |
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