Design and Construction of Deep Excavations
Excavations in urban developed area are generally supported by deep excavation walls such as; diaphragm wall, bored piles, soldier piles and sheet piles. In some cases, these walls may be braced by internal braces or tie back anchors. Tie back anchors are by far the predominant method for wall suppo...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Tishk International University
2020-06-01
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| Series: | Eurasian Journal of Science and Engineering |
| Subjects: | |
| Online Access: | https://eajse.tiu.edu.iq/index.php/volume-6-issue-1-article-6/ |
| _version_ | 1797765807779872768 |
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| author | Barham J. Nareeman Asmaa Abdulmajeed Mamhusseini |
| author_facet | Barham J. Nareeman Asmaa Abdulmajeed Mamhusseini |
| author_sort | Barham J. Nareeman |
| collection | DOAJ |
| description | Excavations in urban developed area are generally supported by deep excavation walls such as; diaphragm wall, bored piles, soldier piles and sheet piles. In some cases, these walls may be braced by internal braces or tie back anchors. Tie back anchors are by far the predominant method for wall support, the large working space inside the excavation provided by a tieback anchor system which has a significant construction advantage. This paper aims to analyze a deep excavation bracing system of contiguous pile wall braced by pre-stressed tie back anchors, which is a part of a huge residential building project, located in Turkey/Gaziantep province. The contiguous pile wall will be constructed with a length of 270 m that consists of 285 piles, each having a diameter of 80 cm, and a center to center spacing of 95 cm. The deformation analysis was carried out by available finite element analysis tool using PLAXIS. In the analysis, beam element method together with an elastic perfect plastic soil model and Soil Hardening Model was used to design the contiguous pile wall, the tieback anchor system and the soil. The two soil clusters which are limestone and a filled soil were modeled with both Hardening soil and Mohr Coulomb models. According to the basic design, both soil clusters are modeled as drained condition. The simulation results show that the maximum horizontal movement of the walls and the maximum settlement of the ground are convenient with 300 individual case histories which are ranging between 1.2mm and 2.3mm for walls, and 15mm and 6.5mm for the settlements. It was concluded that tied-back contiguous pile wall can be satisfactorily modeled using Hardening soil model. |
| first_indexed | 2024-03-12T20:15:28Z |
| format | Article |
| id | doaj.art-4df0b60fbac54dcba7e8d7f403b611b6 |
| institution | Directory Open Access Journal |
| issn | 2414-5629 2414-5602 |
| language | English |
| last_indexed | 2024-03-12T20:15:28Z |
| publishDate | 2020-06-01 |
| publisher | Tishk International University |
| record_format | Article |
| series | Eurasian Journal of Science and Engineering |
| spelling | doaj.art-4df0b60fbac54dcba7e8d7f403b611b62023-08-02T01:21:32ZengTishk International UniversityEurasian Journal of Science and Engineering2414-56292414-56022020-06-0161758810.23918/eajse.v6i1p75Design and Construction of Deep ExcavationsBarham J. Nareeman0Asmaa Abdulmajeed Mamhusseini1Independent ResearcherCivil Engineering Department, Faculty of Engineering, Tishk International University, Erbil, IraqExcavations in urban developed area are generally supported by deep excavation walls such as; diaphragm wall, bored piles, soldier piles and sheet piles. In some cases, these walls may be braced by internal braces or tie back anchors. Tie back anchors are by far the predominant method for wall support, the large working space inside the excavation provided by a tieback anchor system which has a significant construction advantage. This paper aims to analyze a deep excavation bracing system of contiguous pile wall braced by pre-stressed tie back anchors, which is a part of a huge residential building project, located in Turkey/Gaziantep province. The contiguous pile wall will be constructed with a length of 270 m that consists of 285 piles, each having a diameter of 80 cm, and a center to center spacing of 95 cm. The deformation analysis was carried out by available finite element analysis tool using PLAXIS. In the analysis, beam element method together with an elastic perfect plastic soil model and Soil Hardening Model was used to design the contiguous pile wall, the tieback anchor system and the soil. The two soil clusters which are limestone and a filled soil were modeled with both Hardening soil and Mohr Coulomb models. According to the basic design, both soil clusters are modeled as drained condition. The simulation results show that the maximum horizontal movement of the walls and the maximum settlement of the ground are convenient with 300 individual case histories which are ranging between 1.2mm and 2.3mm for walls, and 15mm and 6.5mm for the settlements. It was concluded that tied-back contiguous pile wall can be satisfactorily modeled using Hardening soil model.https://eajse.tiu.edu.iq/index.php/volume-6-issue-1-article-6/deep excavationfinite elementpre-stressed tie back anchorscontiguous pile wallplaxishorizontal deflectionground settlement |
| spellingShingle | Barham J. Nareeman Asmaa Abdulmajeed Mamhusseini Design and Construction of Deep Excavations Eurasian Journal of Science and Engineering deep excavation finite element pre-stressed tie back anchors contiguous pile wall plaxis horizontal deflection ground settlement |
| title | Design and Construction of Deep Excavations |
| title_full | Design and Construction of Deep Excavations |
| title_fullStr | Design and Construction of Deep Excavations |
| title_full_unstemmed | Design and Construction of Deep Excavations |
| title_short | Design and Construction of Deep Excavations |
| title_sort | design and construction of deep excavations |
| topic | deep excavation finite element pre-stressed tie back anchors contiguous pile wall plaxis horizontal deflection ground settlement |
| url | https://eajse.tiu.edu.iq/index.php/volume-6-issue-1-article-6/ |
| work_keys_str_mv | AT barhamjnareeman designandconstructionofdeepexcavations AT asmaaabdulmajeedmamhusseini designandconstructionofdeepexcavations |