Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline Soils
Bearing capacity of belled pier foundation is critical in designing transmission lines in coarse saline soil region. This paper describes model test results on belled pier foundations. Axial uplift behaviours including failure modes, load-displacement curves, and ultimate uplift bearing capacity wer...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/4735423 |
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| author | Jian Xu Jianwei Ren Songhe Wang Long Jin Jun Yuan |
| author_facet | Jian Xu Jianwei Ren Songhe Wang Long Jin Jun Yuan |
| author_sort | Jian Xu |
| collection | DOAJ |
| description | Bearing capacity of belled pier foundation is critical in designing transmission lines in coarse saline soil region. This paper describes model test results on belled pier foundations. Axial uplift behaviours including failure modes, load-displacement curves, and ultimate uplift bearing capacity were discussed. The failure planes in four cases were obtained from pulled out cone-shaped bodies. An empirical equation was developed with a critical parameter of an uplift angle in design. Results indicate the range where the ground uplift shows circular extension at higher loads and the overall shear failure finally occurred. The load-displacement curves are primarily softening, and the uplift bearing capacity for coarse-grained saline soils (CSS) in the crystalline state increases at larger thickness, higher than that in dissolved state. Failure planes all exhibit approximately linear change from bottom to up. The angles of uplift for soils in crystalline and dissolved states can be taken as 34° and 18°, while 32° for the conventional for the sake of safety. Uplift behaviour of belled piers in CSS was modelled incorporating a practical interface model, with both failure planes and plastic range. |
| format | Article |
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| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
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| series | Advances in Civil Engineering |
| spelling | doaj-art-bf43f3f6d13340408ed144cf24ed7e052025-02-03T05:59:10ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/47354234735423Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline SoilsJian Xu0Jianwei Ren1Songhe Wang2Long Jin3Jun Yuan4School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, ChinaSchool of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, ChinaInstitute of Geotechnical Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaState Key Laboratory of Road Engineering Safety and Health in Cold and High-altitude Region, CCCC First Highway Consultants Co., Ltd., Xi’an, Shaanxi 710075, ChinaNorthwest Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, Xi’an, Shaanxi 710075, ChinaBearing capacity of belled pier foundation is critical in designing transmission lines in coarse saline soil region. This paper describes model test results on belled pier foundations. Axial uplift behaviours including failure modes, load-displacement curves, and ultimate uplift bearing capacity were discussed. The failure planes in four cases were obtained from pulled out cone-shaped bodies. An empirical equation was developed with a critical parameter of an uplift angle in design. Results indicate the range where the ground uplift shows circular extension at higher loads and the overall shear failure finally occurred. The load-displacement curves are primarily softening, and the uplift bearing capacity for coarse-grained saline soils (CSS) in the crystalline state increases at larger thickness, higher than that in dissolved state. Failure planes all exhibit approximately linear change from bottom to up. The angles of uplift for soils in crystalline and dissolved states can be taken as 34° and 18°, while 32° for the conventional for the sake of safety. Uplift behaviour of belled piers in CSS was modelled incorporating a practical interface model, with both failure planes and plastic range.http://dx.doi.org/10.1155/2018/4735423 |
| spellingShingle | Jian Xu Jianwei Ren Songhe Wang Long Jin Jun Yuan Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline Soils Advances in Civil Engineering |
| title | Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline Soils |
| title_full | Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline Soils |
| title_fullStr | Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline Soils |
| title_full_unstemmed | Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline Soils |
| title_short | Axial Uplift Behaviour of Belled Piers in Coarse-Grained Saline Soils |
| title_sort | axial uplift behaviour of belled piers in coarse grained saline soils |
| url | http://dx.doi.org/10.1155/2018/4735423 |
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