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Seismic Pullout Capacity of Inclined Anchor Plates in Sand

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Abstract

By using the lower bound finite elements limit analysis, the pullout capacity of an inclined strip anchor plate embedded in a cohesionless soil medium has been computed with an inclusion of pseudo-static horizontal earthquake body forces. The variation of the pullout capacity factor (F γ ) with changes in horizontal earthquake acceleration co-efficient (α h ) has been computed by varying the inclination angle (β) of the anchor plate between 0° and 90°. The results clearly reveal that the pullout capacity factor (F γ ) decreases significantly with an increase in the value of α h . The reduction in the pullout resistance due to seismic forces (1) becomes much more extensive for a vertical anchor plate as compared to the horizontal anchor, (2) decreases generally with increases in the soil friction angle (ϕ) and (3) increases with an increase in friction angle between soil and anchor plate (δ). The developments of the failure zone around the anchor plate were also examined by varying α h and β. The results obtained from the analysis compare well with the solutions reported in literature.

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Authors and Affiliations

  1. Civil Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India

    Paramita Bhattacharya

  2. Civil Engineering Department, Indian Institute of Science, Bangalore, Bangalore, 560012, India

    Jyant Kumar

Authors
  1. Paramita Bhattacharya
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  2. Jyant Kumar
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Correspondence to Paramita Bhattacharya.

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Bhattacharya, P., Kumar, J. Seismic Pullout Capacity of Inclined Anchor Plates in Sand. Geotech Geol Eng 35, 679–692 (2017). https://doi.org/10.1007/s10706-016-0133-4

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  • DOI: https://doi.org/10.1007/s10706-016-0133-4

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