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Estimation of Uplift Capacity of Rapidly Loaded Plate Anchors in Soft Clay |
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| Authors: | S P Singh D P Tripathy S V Ramaswamy |
| Affiliation: | a Department of Civil Engineering, National Institute of Technology, Rourkela, Orissa, India b Department of Mining Engineering, National Institute of Technology, Rourkela, Orissa, India c Department of Civil Engineering, Anna University, Chennai, Tamil Nadu, India |
| Abstract: | Plate anchors are extensively used in civil engineering constructions as they provide an economical alternative to gravity and other embedded anchors. The rate of loading is one of the important factors that affects the magnitude of soil resistance as well as soil suction force. This article outlines the effect of pullout rate on uplift behavior of plate anchors (70 mm diameter) buried in soft saturated clay by varying the pullout rate from 1.4 mm/min to 21.0 mm/min. The variation of breakout force and suction force with embedment depth and rate of pull are presented. A correlation between the rate of increase of undrained strength of clay and anchor capacity with rate of strain has been established. Finally an empirical equation has been proposed that includes the rate of pull in the estimation of breakout capacity of anchors. |
| Keywords: | embedment ratio plate anchor soft clay strain rate suction force uplift capacity |
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