Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out Box
The present study aims at investigating the pull-out resistance efficiency of single and double nails. In sandy soils, where the distance between nails is less than the minimum required distance, the pull-out resistance is reduced. Besides, when the minimum required distance is met, the nail pull-ou...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Semnan University
2022-02-01
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| Series: | Journal of Rehabilitation in Civil Engineering |
| Subjects: | |
| Online Access: | https://civiljournal.semnan.ac.ir/article_5205_6ecf34e664390edceb6b010af5e63649.pdf |
| _version_ | 1818269707700011008 |
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| author | Sajad Tavakoli Mohammad Hosein Aminfar |
| author_facet | Sajad Tavakoli Mohammad Hosein Aminfar |
| author_sort | Sajad Tavakoli |
| collection | DOAJ |
| description | The present study aims at investigating the pull-out resistance efficiency of single and double nails. In sandy soils, where the distance between nails is less than the minimum required distance, the pull-out resistance is reduced. Besides, when the minimum required distance is met, the nail pull-out capacity is not under the effect of the neighboring nail. The parameters affecting the efficiency of the nail group are investigated in this study; including, a type of nail, nail intervals and overburden type of pressure. One of the most important parameters – in order to determine the efficiency of the group – is the nail surface roughness coefficient, which is dependent on factors such as the number of the ribs in each unit length of nail and, also, the depth of the ribs to the size of soil particle. The nail surface roughness coefficient is used to determine the apparent friction coefficient on the nail surface. In all tests, the pull-out force-displacement curve had distinct peak values, accompanied by a reduction in the pull-out force value. The results indicated that the minimum distance required for the full involvement of the pull-out resistance of the nails was strongly subservient to the roughness coefficient of the nail surface. |
| first_indexed | 2024-12-12T20:58:40Z |
| format | Article |
| id | doaj.art-3bbc255bff2040659da6452ceef7edec |
| institution | Directory Open Access Journal |
| issn | 2345-4415 2345-4423 |
| language | English |
| last_indexed | 2024-12-12T20:58:40Z |
| publishDate | 2022-02-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Rehabilitation in Civil Engineering |
| spelling | doaj.art-3bbc255bff2040659da6452ceef7edec2022-12-22T00:12:13ZengSemnan UniversityJournal of Rehabilitation in Civil Engineering2345-44152345-44232022-02-01101698710.22075/jrce.2021.22026.14635205Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out BoxSajad Tavakoli0Mohammad Hosein Aminfar1Assistant Professor in Geotechnical Engineering, Ilam Azad University, Ilam, IranProfessor of Geotechnical Engineering, Civil Engineering Faculty, University of Tabriz, Tabriz, IranThe present study aims at investigating the pull-out resistance efficiency of single and double nails. In sandy soils, where the distance between nails is less than the minimum required distance, the pull-out resistance is reduced. Besides, when the minimum required distance is met, the nail pull-out capacity is not under the effect of the neighboring nail. The parameters affecting the efficiency of the nail group are investigated in this study; including, a type of nail, nail intervals and overburden type of pressure. One of the most important parameters – in order to determine the efficiency of the group – is the nail surface roughness coefficient, which is dependent on factors such as the number of the ribs in each unit length of nail and, also, the depth of the ribs to the size of soil particle. The nail surface roughness coefficient is used to determine the apparent friction coefficient on the nail surface. In all tests, the pull-out force-displacement curve had distinct peak values, accompanied by a reduction in the pull-out force value. The results indicated that the minimum distance required for the full involvement of the pull-out resistance of the nails was strongly subservient to the roughness coefficient of the nail surface.https://civiljournal.semnan.ac.ir/article_5205_6ecf34e664390edceb6b010af5e63649.pdfsoil nailinggroup efficiencyapparent friction coefficientdouble nailspull-out resistant |
| spellingShingle | Sajad Tavakoli Mohammad Hosein Aminfar Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out Box Journal of Rehabilitation in Civil Engineering soil nailing group efficiency apparent friction coefficient double nails pull-out resistant |
| title | Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out Box |
| title_full | Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out Box |
| title_fullStr | Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out Box |
| title_full_unstemmed | Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out Box |
| title_short | Study of Nail Group Efficiency on Sandy Soil Using Large Scale Pull-out Box |
| title_sort | study of nail group efficiency on sandy soil using large scale pull out box |
| topic | soil nailing group efficiency apparent friction coefficient double nails pull-out resistant |
| url | https://civiljournal.semnan.ac.ir/article_5205_6ecf34e664390edceb6b010af5e63649.pdf |
| work_keys_str_mv | AT sajadtavakoli studyofnailgroupefficiencyonsandysoilusinglargescalepulloutbox AT mohammadhoseinaminfar studyofnailgroupefficiencyonsandysoilusinglargescalepulloutbox |