Seismic uplift capacity of strip anchors in soil |
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Authors: | Deepankar Choudhury Kanakapura S Subba Rao |
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Institution: | (1) Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India;(2) Department of Civil Engineering, Indian Institute of Science, Bangalore, 560 012, India |
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Abstract: | Uplift capacity of horizontal strip anchors in soil embedded under an inclined ground surface has been obtained under seismic
conditions. Limit equilibrium approach with logspiral failure surface together with pseudo-static seismic forces has been
adopted. The results have been presented in the form of seismic uplift capacity factors as functions of ground inclination,
embedment ratio, angle of internal friction of the soil and seismic acceleration coefficients. The uplift capacity factors
have been worked out separately for cohesion, surcharge and density components. Effect of the vertical seismic acceleration
coefficient has been found to always reduce the uplift capacity whereas the effect of horizontal seismic acceleration coefficient
has been found to reduce the uplift capacity in most of the cases. The obtained results of seismic uplift capacity factors
are found to be the minimum when compared with the results available in literature on the basis of planar failure surface.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | horizontal strip anchors limit equilibrium pseudo-static analysis seismic passive earth pressure uplift capacity |
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