Evaluate Variations of Deflections of Fixed Headed Pile from Non-Linear Load - Deflection Curve under Lateral Loading

Md. Foisal Haque

doi:10.37591/joge.v9i1.6231

Abstract

Lateral stability is the vital issue when the pile stands in several soft clay either sand layers. In reality, structure and soil both are show non-linear behaviors. Proper evaluation of non-linear behavior has not so essay in theory. However, slight non-linear effects are included in pile deflection from load-deflection curve of pressuremeter test in laboratory. Pressuremeter modulus is influenced deflection of fixed headed piles. Predicting the variations of non-linear load deflection curve with the successive incremental lateral loading is the main scope of the present research. Variable parameters are diameter of pile, lateral load and length of pile. After a certain length of piles, deflection difference between any of two diameters piles is very low. Maximum deflection occurs at pile head for lowest diameter pile and this value is very low. Lower value of deflection indicates non-linear effects. For larger diameter pile, deflection variation shows like as exponential curve. In the present study, maximum deflection has been found to be approximately 1.6μm for 400mm diameter pile and 20000kN lateral load. Diameter increment is the major reason of deflection reduction at constant lateral load.