Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand
Geogrid reinforcements can effectively improve the pullout capacity of anchor plates, but the failure mechanism and influencing factors during the uplift process need to be further investigated. In this paper, a series of uplift tests was carried out on horizontal anchor plates in sand to investigat...
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| Format: | Article |
| Language: | English |
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SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717
2022-05-01
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| Series: | Rock and Soil Mechanics |
| Subjects: | |
| Online Access: | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6618 |
| _version_ | 1818523165048963072 |
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| author | ZHU Hong-hu GAO Yu-xin LI Yuan-hai NI Yu-fei |
| author_facet | ZHU Hong-hu GAO Yu-xin LI Yuan-hai NI Yu-fei |
| author_sort | ZHU Hong-hu |
| collection | DOAJ |
| description | Geogrid reinforcements can effectively improve the pullout capacity of anchor plates, but the failure mechanism and influencing factors during the uplift process need to be further investigated. In this paper, a series of uplift tests was carried out on horizontal anchor plates in sand to investigate their pullout characteristics, and the influence of various factors was analyzed, including sand density, anchor embedment depth, and number of geogrids and their locations. The particle image velocimetry (PIV) technology was used to explore the deformation and failure mechanism of the sand around anchor plates. The results show that for the pullout capacity of an anchor plate is significantly enhanced by one layer of contact-type geogrid, and the reinforcing effect is better than that with non-contact geogrid. This phenomenon is associated with mobilized friction of the geogrid and the increased weight of sand within the failure surface. When two layers of geogrids are installed, the lower geogrid plays a dominant role in restricting the lateral soil deformation and homogenizing the stress distribution, and the contribution of the upper geogrid is relatively low. Whether geogrids are applied or not will alter the deformation mechanism at the anchor-sand interface. With geogrid reinforcement, the failure surface converges inward, and the shear strain distribution is more uniform. |
| first_indexed | 2024-12-11T05:41:49Z |
| format | Article |
| id | doaj.art-b8d0b4d839574f54a84adcbfc38c75bb |
| institution | Directory Open Access Journal |
| issn | 1000-7598 |
| language | English |
| last_indexed | 2024-12-11T05:41:49Z |
| publishDate | 2022-05-01 |
| publisher | SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717 |
| record_format | Article |
| series | Rock and Soil Mechanics |
| spelling | doaj.art-b8d0b4d839574f54a84adcbfc38c75bb2022-12-22T01:19:07ZengSCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717Rock and Soil Mechanics1000-75982022-05-014351207121410.16285/j.rsm.2021.6618Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sandZHU Hong-hu0GAO Yu-xin 1LI Yuan-hai2NI Yu-fei31. School of Earth Science and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China 2. State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaSchool of Earth Science and Engineering, Nanjing University, Nanjing, Jiangsu 210023, ChinaState Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Ji angsu 221116, China School of Earth Science and Engineering, Nanjing University, Nanjing, Jiangsu 210023, ChinaGeogrid reinforcements can effectively improve the pullout capacity of anchor plates, but the failure mechanism and influencing factors during the uplift process need to be further investigated. In this paper, a series of uplift tests was carried out on horizontal anchor plates in sand to investigate their pullout characteristics, and the influence of various factors was analyzed, including sand density, anchor embedment depth, and number of geogrids and their locations. The particle image velocimetry (PIV) technology was used to explore the deformation and failure mechanism of the sand around anchor plates. The results show that for the pullout capacity of an anchor plate is significantly enhanced by one layer of contact-type geogrid, and the reinforcing effect is better than that with non-contact geogrid. This phenomenon is associated with mobilized friction of the geogrid and the increased weight of sand within the failure surface. When two layers of geogrids are installed, the lower geogrid plays a dominant role in restricting the lateral soil deformation and homogenizing the stress distribution, and the contribution of the upper geogrid is relatively low. Whether geogrids are applied or not will alter the deformation mechanism at the anchor-sand interface. With geogrid reinforcement, the failure surface converges inward, and the shear strain distribution is more uniform.http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6618geogrid reinforcementuplift of anchor platepullout capacityparticle image velocimetry (piv)interface behavior |
| spellingShingle | ZHU Hong-hu GAO Yu-xin LI Yuan-hai NI Yu-fei Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand Rock and Soil Mechanics geogrid reinforcement uplift of anchor plate pullout capacity particle image velocimetry (piv) interface behavior |
| title | Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand |
| title_full | Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand |
| title_fullStr | Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand |
| title_full_unstemmed | Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand |
| title_short | Experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand |
| title_sort | experimental study of pullout behavior of horizontal anchor plates in geogrid reinforced sand |
| topic | geogrid reinforcement uplift of anchor plate pullout capacity particle image velocimetry (piv) interface behavior |
| url | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2021.6618 |
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