Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing
In this research, the effects of the wraparound anchorage on the bearing capacity of a spread footing on sand reinforced by carbon fiber reinforced polymer strips were studied experimentally and numerically. A steel box with the dimensions of 100×100×70 cm was used as a test setup and the spread foo...
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| Format: | Article |
| Language: | fas |
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Sharif University of Technology
2022-02-01
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| Series: | مهندسی عمران شریف |
| Subjects: | |
| Online Access: | https://sjce.journals.sharif.edu/article_22515_264a652dab2c43c947a38efda03c2415.pdf |
| _version_ | 1827862119719108608 |
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| author | A. Ouria H. Sadeghpour |
| author_facet | A. Ouria H. Sadeghpour |
| author_sort | A. Ouria |
| collection | DOAJ |
| description | In this research, the effects of the wraparound anchorage on the bearing capacity of a spread footing on sand reinforced by carbon fiber reinforced polymer strips were studied experimentally and numerically. A steel box with the dimensions of 100×100×70 cm was used as a test setup and the spread footing was simulated using a steel plate with the dimensions of 20×20×2.5 cm. Also, a numerical model was developed by FLAC3D software to simulate the physical model for further investigations. Laboratory tests were conducted on unreinforced and reinforced models with and without wraparound anchors with different lengths. The results of these investigations indicated that the effect of the wraparound anchorage on the bearing capacity of the foundation was highly dependent on the return length of the anchor. Its effect on the improvement of the bearing capacity of the foundation was noticeable when the length of the anchor was long enough that the end of the reinforcement placed under the footing. Otherwise, the effect of the wraparound anchor on the improvement of the bearing capacity of the footing was negligible. Depending on the length of the return anchor, two distinct load-settlement behaviors were observed. When the length of the return anchor was not long enough, the bearing capacity of the footing showed some improvement in low settlement levels, but it approached the bearing capacity of the footing with unanchored reinforcements as the settlement was increasing. There was at least 10% improvement in the bearing capacity in this situation. For models with long return anchors, increasing the settlement of the footing increased the bearing capacity of the footing when compared to the behavior of reinforced model without wraparound anchor. The improvement of the bearing capacity of the footing was up to 27% for long anchors depending on the length of the wraparound anchor. The results of the numerical simulations indicated that the wraparound anchorage changed the stress distribution and increased the confinement of the soil elements located under the footing. Increasing the length of the return anchors led to a uniform distribution of the confining pressure under the footing. |
| first_indexed | 2024-03-12T13:48:42Z |
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| id | doaj.art-19b8ddd43dee4825a16ddd8503396294 |
| institution | Directory Open Access Journal |
| issn | 2676-4768 2676-4776 |
| language | fas |
| last_indexed | 2024-03-12T13:48:42Z |
| publishDate | 2022-02-01 |
| publisher | Sharif University of Technology |
| record_format | Article |
| series | مهندسی عمران شریف |
| spelling | doaj.art-19b8ddd43dee4825a16ddd85033962942023-08-23T07:35:09ZfasSharif University of Technologyمهندسی عمران شریف2676-47682676-47762022-02-0137.24.19310410.24200/j30.2021.57629.292222515Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footingA. Ouria0H. Sadeghpour1Dept. of Civil Engineering University of Mohaghegh ArdabiliDept. of Civil Engineering University of Mohaghegh ArdabiliIn this research, the effects of the wraparound anchorage on the bearing capacity of a spread footing on sand reinforced by carbon fiber reinforced polymer strips were studied experimentally and numerically. A steel box with the dimensions of 100×100×70 cm was used as a test setup and the spread footing was simulated using a steel plate with the dimensions of 20×20×2.5 cm. Also, a numerical model was developed by FLAC3D software to simulate the physical model for further investigations. Laboratory tests were conducted on unreinforced and reinforced models with and without wraparound anchors with different lengths. The results of these investigations indicated that the effect of the wraparound anchorage on the bearing capacity of the foundation was highly dependent on the return length of the anchor. Its effect on the improvement of the bearing capacity of the foundation was noticeable when the length of the anchor was long enough that the end of the reinforcement placed under the footing. Otherwise, the effect of the wraparound anchor on the improvement of the bearing capacity of the footing was negligible. Depending on the length of the return anchor, two distinct load-settlement behaviors were observed. When the length of the return anchor was not long enough, the bearing capacity of the footing showed some improvement in low settlement levels, but it approached the bearing capacity of the footing with unanchored reinforcements as the settlement was increasing. There was at least 10% improvement in the bearing capacity in this situation. For models with long return anchors, increasing the settlement of the footing increased the bearing capacity of the footing when compared to the behavior of reinforced model without wraparound anchor. The improvement of the bearing capacity of the footing was up to 27% for long anchors depending on the length of the wraparound anchor. The results of the numerical simulations indicated that the wraparound anchorage changed the stress distribution and increased the confinement of the soil elements located under the footing. Increasing the length of the return anchors led to a uniform distribution of the confining pressure under the footing.https://sjce.journals.sharif.edu/article_22515_264a652dab2c43c947a38efda03c2415.pdfspread footingreinforced soilcarbon fiberwraparound anchorbearing capacity |
| spellingShingle | A. Ouria H. Sadeghpour Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing مهندسی عمران شریف spread footing reinforced soil carbon fiber wraparound anchor bearing capacity |
| title | Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing |
| title_full | Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing |
| title_fullStr | Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing |
| title_full_unstemmed | Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing |
| title_short | Laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing |
| title_sort | laboratory and numerical simulation of the effect of wraparound anchorage of reinforcements on the bearing capacity of spread footing |
| topic | spread footing reinforced soil carbon fiber wraparound anchor bearing capacity |
| url | https://sjce.journals.sharif.edu/article_22515_264a652dab2c43c947a38efda03c2415.pdf |
| work_keys_str_mv | AT aouria laboratoryandnumericalsimulationoftheeffectofwraparoundanchorageofreinforcementsonthebearingcapacityofspreadfooting AT hsadeghpour laboratoryandnumericalsimulationoftheeffectofwraparoundanchorageofreinforcementsonthebearingcapacityofspreadfooting |