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Experimental study on uplift behavior of shallow anchor plates in geogrid-reinforced soil
https://orcid.org/0000-0002-1312-0410
Abstract Geogrid reinforcement can significantly improve the uplift bearing capacity of anchor plates. However, the failure mechanism of anchor plates in reinforced soil and the contribution of geogrids need further investigation. This paper presents an experimental study on the anchor uplift behavior in geogrid-reinforced soil using particle image velocimetry (PIV) and the high-resolution optical frequency domain reflectometry (OFDR). A series of model tests were performed to identify the relationship between the failure mechanism and various factors, such as anchor embedment ratio, number of geogrid layers, and their location. The test results indicate that soil deformation and the uplift resistance of anchor plates are substantially influenced by anchor embedment ratio and location of geogrids, whereas the number of geogrid layers has limited influence. In reinforced soil, increasing the embedment ratio greatly improves the ultimate bearing capacities of anchor plates and affects the interlock between the soil and geogrids. As the embedment depth increases, the failure surfaces gradually change from a vertical slip surface to a bulb-shaped surface that is limited within the soil. The strain monitoring data shows that the deformations of geogrids are symmetrical, and the peak strains of geogrids can characterize the reinforcing effects.
Highlights Particle image velocimetry is used to analyze the uplift behavior plate anchors in geogrid-reinforced soil. The fiber optic strain sensing technique is employed to measure geogrid strains during the uplift tests. The geogrid in contact with the anchor plate can effectively improve the uplift capacity. An analytical model linking the peak strain of geogrids to the improvement factor is given.
Experimental study on uplift behavior of shallow anchor plates in geogrid-reinforced soil
https://orcid.org/0000-0002-1312-0410
Abstract Geogrid reinforcement can significantly improve the uplift bearing capacity of anchor plates. However, the failure mechanism of anchor plates in reinforced soil and the contribution of geogrids need further investigation. This paper presents an experimental study on the anchor uplift behavior in geogrid-reinforced soil using particle image velocimetry (PIV) and the high-resolution optical frequency domain reflectometry (OFDR). A series of model tests were performed to identify the relationship between the failure mechanism and various factors, such as anchor embedment ratio, number of geogrid layers, and their location. The test results indicate that soil deformation and the uplift resistance of anchor plates are substantially influenced by anchor embedment ratio and location of geogrids, whereas the number of geogrid layers has limited influence. In reinforced soil, increasing the embedment ratio greatly improves the ultimate bearing capacities of anchor plates and affects the interlock between the soil and geogrids. As the embedment depth increases, the failure surfaces gradually change from a vertical slip surface to a bulb-shaped surface that is limited within the soil. The strain monitoring data shows that the deformations of geogrids are symmetrical, and the peak strains of geogrids can characterize the reinforcing effects.
Highlights Particle image velocimetry is used to analyze the uplift behavior plate anchors in geogrid-reinforced soil. The fiber optic strain sensing technique is employed to measure geogrid strains during the uplift tests. The geogrid in contact with the anchor plate can effectively improve the uplift capacity. An analytical model linking the peak strain of geogrids to the improvement factor is given.
Experimental study on uplift behavior of shallow anchor plates in geogrid-reinforced soil
https://orcid.org/0000-0002-1312-0410
Abstract Geogrid reinforcement can significantly improve the uplift bearing capacity of anchor plates. However, the failure mechanism of anchor plates in reinforced soil and the contribution of geogrids need further investigation. This paper presents an experimental study on the anchor uplift behavior in geogrid-reinforced soil using particle image velocimetry (PIV) and the high-resolution optical frequency domain reflectometry (OFDR). A series of model tests were performed to identify the relationship between the failure mechanism and various factors, such as anchor embedment ratio, number of geogrid layers, and their location. The test results indicate that soil deformation and the uplift resistance of anchor plates are substantially influenced by anchor embedment ratio and location of geogrids, whereas the number of geogrid layers has limited influence. In reinforced soil, increasing the embedment ratio greatly improves the ultimate bearing capacities of anchor plates and affects the interlock between the soil and geogrids. As the embedment depth increases, the failure surfaces gradually change from a vertical slip surface to a bulb-shaped surface that is limited within the soil. The strain monitoring data shows that the deformations of geogrids are symmetrical, and the peak strains of geogrids can characterize the reinforcing effects.
Highlights Particle image velocimetry is used to analyze the uplift behavior plate anchors in geogrid-reinforced soil. The fiber optic strain sensing technique is employed to measure geogrid strains during the uplift tests. The geogrid in contact with the anchor plate can effectively improve the uplift capacity. An analytical model linking the peak strain of geogrids to the improvement factor is given.
Experimental study on uplift behavior of shallow anchor plates in geogrid-reinforced soil
Gao, Yu-Xin (author) / Zhu, Hong-Hu (author) / Ni, Yu-Fei (author) / Wei, Chao (author) / Shi, Bin (author)
Geotextiles and Geomembranes ; 50 ; 994-1003
2022-06-27
10 pages
Article (Journal)
Electronic Resource
English
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