Pullout Resistance of Buried Anchor in Sand

Abstract

This paper offers the estimation formulas of the pullout resistance of plate anchor in medium-to-dense sandy soil. The soil failure mechanism of anchor pullout can be divided into shallow and deep mechanisms. The solution of shallow anchor by Meyerhof (1973) and the formula of deep horizontal anchor by the theory of plasticity with the concept of cavity expansion will be introduced, and compared with the results of centrifuge model tests and the results of elastoplastic finite element analyses. The main conclusions are as follows: (1) The solutions of the shallow anchor in arbitrary inclination and the deep horizontal anchor, the results of centrifuge model tests, and the results of finite element analyses showed good agreement; (2) The shape factor of finite length anchor has been clarified experimentally ; (3) The critical relative depth from shallow anchor to deep anchor is 6-8 in the case of medium-to-dense dry sand having the angle of shear resistance of 32°-42°.