Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.compgeo.2013.04.002
Title: Influence of overburden pressure and soil rigidity on uplift behavior of square plate anchor in uniform clay
Authors: Chen, Z.
Tho, K.K. 
Leung, C.F. 
Chow, Y.K. 
Keywords: Eulerian finite element method
Plate anchor
Pullout resistance
Uniform clay
Issue Date: Jul-2013
Citation: Chen, Z., Tho, K.K., Leung, C.F., Chow, Y.K. (2013-07). Influence of overburden pressure and soil rigidity on uplift behavior of square plate anchor in uniform clay. Computers and Geotechnics 52 : 71-81. ScholarBank@NUS Repository. https://doi.org/10.1016/j.compgeo.2013.04.002
Abstract: A numerical study incorporating three-dimensional Eulerian large deformation finite element analyses is performed to investigate the pullout process of horizontal square plate anchors in both hypothetical weightless soil and soil with self-weight. The validity of the numerical model is established through verification against published experimental and numerical results. The failure mechanisms during the pullout process under different conditions are then investigated. Three types of failure mechanism are observed; of which only two have been reported in the literature. The third mechanism identified in this study, which is a partially localized flow mechanism, is operative when the soil overburden ratio is not high enough to mobilize the full flow mechanism. The influence of soil self-weight is directly investigated by incorporating the density of the soil in the finite element model and maintaining the gravitational acceleration field throughout the analysis. The critical overburden ratio corresponding to the full transition to a localized plastic flow mechanism is identified in this study. The effect of the soil rigidity index (E/. su) on the anchor uplift capability has not been systematically investigated in earlier studies. Contrary to the general failure mechanism and the full flow mechanism described in the literature, the capacity factor corresponding to this new mechanism increases with increasing E/. su. The capacity factors for square plate anchors corresponding to different anchor embedment ratios, overburden ratios and E/. su are provided in the form of design charts. © 2013 Elsevier Ltd.
Source Title: Computers and Geotechnics
URI: http://scholarbank.nus.edu.sg/handle/10635/91026
ISSN: 0266352X
DOI: 10.1016/j.compgeo.2013.04.002
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