Authors: Jagdish Prasad Sahoo Jyant Kumar
Publish Date: 2012/07/17
Volume: 30, Issue: 5, Pages: 1279-1287
Abstract
The horizontal pullout capacity of a group of two rigid strip plate anchors embedded along the same vertical plane in clays under undrained condition has been determined An increase of cohesion with depth has also been incorporated The analysis has been performed by using an upper bound finite element limit analysis in combination with linear optimization For different clear spacing S between the anchors the efficiency factor ηcγ has been determined to evaluate the group failure load for different values of 1 embedment ratio H/B 2 the normalized rate m which accounts for a linear increase of cohesion with depth and 3 normalized unit weight γH/co The magnitude of the group failure load 1 becomes maximum corresponding to a certain spacing Scr between the anchors and 2 increases with an increase in the γH/co up to a certain value before attaining a certain maximum magnitude The value of Scr/B has been found to vary generally between 07 and 12 The maximum magnitude of ηcγ associated with the critical spacing 1 increases generally with increases in H/B and 2 decreases with an increase in m For a greater spacing between the anchors the analysis reveals the development of a local shear zone around the lower anchor plate The numerical results developed are expected to be useful for purpose of design
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