Modification of the Constant Coefficient Method for Horizontal Reaction of Foundation of Rigid Rock-Socketed Piles
With the continuous development of construction scale and the offshore engineering,the loads on pile foundations have been becoming more and more complicated and the effect of lateral loads on pile foun-dations have been becoming more and more notable.The calculation method for the horizontal reaction coef-ficient of foundation of rock-socketed piles,which is suggested by Specifications for Design of Foundation of Highway Bridges and Culverts JTC 3363-2019,is too simple,and the size effect of large-diameter rock-socketed piles is not well considered.According to the mechanical characteristics of rigid rock-socketed piles,considering the effect of vertical skin friction,a calculation method to determine the response of rigid rock-socketed piles under lateral loads was proposed based on the assumption of a constant coefficient of horizontal reaction of foundation.The calculation results were more accurate compared with the results with-out considering vertical skin friction.Based on field test data,the numerical models of rigid rock-socketed piles were constructed by a finite difference software,and the parameter analysis on various factors influen-cing the rock-pile interaction including the mechanical and physical parameters of rock and piles was per-formed.Eventually,a fitting formula for the horizontal reaction coefficient based on the assumption of a constant coefficient of horizontal reaction of foundation was proposed.
rock-socketed pilehorizontal bearing capacityconstant coefficient method for horizontal reac-tion of foundation
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