Effect of pile spacing and pile arrangement on the stress of micropile supporting system
LI Xin
LI Changlong
BAI Mingzhou
LONG Wanxue
QIU Shumao
YU Ning
Abstract：The models of independent micropile,micropile with coupling beams and micropile with pile cap are built up,and the mechanical characteristics of all these three types of micropile supporting systems are analyzed under the condition of different pile arrangements and pile spacings.The results show that the anti-slide effect of micropile with pile cap is better under the same load condition,whose maximum bending moment is 1.36 and 1.35 times as that of independent micropile and micropile with coupling beams respectively.The maximum bending moment of micropiles with plum blossom shape arrangement is almost 1.02 times as that of micropiles with rectangular symmetry arrangement.The pile spacing of 1.5～2.0 m is in favor of fully exerting of the anti-slide effect of micropiles.Thus,it is concluded that the best pile arrangement form is the micropile with pile cap with the arrangement of plum blossom shape,and the recommended pile spacing is 1.5～2.0 m.
Keywords：slope reinforcementmicropile supporting systempile arrangementpile spacingstress mechanism
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 47-54 )