Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit
In order to design the soil-rock combination foundation pit more safely and effectively, this paper presents the investigations of the mechanical and deformational characteristics of end-suspended piles supporting the structures in Jinan CBD area. Based on the measured data, a finite element model w...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5593639 |
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| author | Qingchao Xu Zhenhao Bao Tu Lu Huarui Gao Jiakang Song |
| author_facet | Qingchao Xu Zhenhao Bao Tu Lu Huarui Gao Jiakang Song |
| author_sort | Qingchao Xu |
| collection | DOAJ |
| description | In order to design the soil-rock combination foundation pit more safely and effectively, this paper presents the investigations of the mechanical and deformational characteristics of end-suspended piles supporting the structures in Jinan CBD area. Based on the measured data, a finite element model was established through the two-dimensional numerical simulation method to study the deformational characteristics of the end-suspended piles, and the influences of the depth of socketed rock, the width of rock shoulder, and the prestress of anchor cables on the deformations and mechanical property of end-suspended piles were discussed. Some optimization methods are proposed based on these analyses. Results show the following: (1) Rock-socketed depths have boundary effect on end-suspended piles. Under the given geological conditions, the reasonable socketed ratio is within 0.158∼0.200. (2) The anchor cable prestress can effectively slow down the ground settlement, the force, and deformation of the pile body and can be set to 1P∼1.25P under the conditions of the site. (3) Rock-shoulder width has little influence on the ground settlement and horizontal displacement of piles. The reserved width of rock shoulder is suggested to be selected in the range of 1.0 m∼1.5 m. |
| format | Article |
| id | doaj-art-b56817870f1c4887b6ae4cc66ec25c99 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-b56817870f1c4887b6ae4cc66ec25c992025-02-03T01:24:55ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/55936395593639Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation PitQingchao Xu0Zhenhao Bao1Tu Lu2Huarui Gao3Jiakang Song4Shandong Hi-Speed Construction Management Group Co., Ltd., 260014 Shandong, Jinan, ChinaSchool of Civil Engineering, Shandong University, 250061 Shandong, Jinan, ChinaSchool of Civil Engineering, Shandong University, 250061 Shandong, Jinan, ChinaShandong Hi-Speed Construction Management Group Co., Ltd., 260014 Shandong, Jinan, ChinaShandong Hi-Speed Construction Management Group Co., Ltd., 260014 Shandong, Jinan, ChinaIn order to design the soil-rock combination foundation pit more safely and effectively, this paper presents the investigations of the mechanical and deformational characteristics of end-suspended piles supporting the structures in Jinan CBD area. Based on the measured data, a finite element model was established through the two-dimensional numerical simulation method to study the deformational characteristics of the end-suspended piles, and the influences of the depth of socketed rock, the width of rock shoulder, and the prestress of anchor cables on the deformations and mechanical property of end-suspended piles were discussed. Some optimization methods are proposed based on these analyses. Results show the following: (1) Rock-socketed depths have boundary effect on end-suspended piles. Under the given geological conditions, the reasonable socketed ratio is within 0.158∼0.200. (2) The anchor cable prestress can effectively slow down the ground settlement, the force, and deformation of the pile body and can be set to 1P∼1.25P under the conditions of the site. (3) Rock-shoulder width has little influence on the ground settlement and horizontal displacement of piles. The reserved width of rock shoulder is suggested to be selected in the range of 1.0 m∼1.5 m.http://dx.doi.org/10.1155/2021/5593639 |
| spellingShingle | Qingchao Xu Zhenhao Bao Tu Lu Huarui Gao Jiakang Song Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit Advances in Civil Engineering |
| title | Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit |
| title_full | Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit |
| title_fullStr | Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit |
| title_full_unstemmed | Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit |
| title_short | Numerical Simulation and Optimization Design of End-Suspended Pile Support for Soil-Rock Composite Foundation Pit |
| title_sort | numerical simulation and optimization design of end suspended pile support for soil rock composite foundation pit |
| url | http://dx.doi.org/10.1155/2021/5593639 |
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