INFLUENCE OF ANCHORAGE DEPTH ON MECHANICAL BEHAVIOUR OF DOUBLE-ROW ANTI-SLIDE PILES
YU Yang1,SUN Hongyue2,SHANG Yuequan1
(1. College of Civil Engineering and Architecture,Zhejiang University,Hangzhou,Zhejiang 310058,China;
2. Ocean College,Zhejiang University,Hangzhou,Zhejiang 310058,China)
Abstract:According to the problem of selection of anchorage depths of front-row and back-row piles in double-row anti-slide piles in Hongyan landslide project,a simplified calculation model is built based on the FLAC3D program. In this model,pile-soil interaction is considered by applying displacement on the boundary of sliding mass to simulate the horizontal thrust force acting on anti-slide piles. Based on this numerical model,variations of deflection,bending moment,shear force and sliding resistance of the double-row anti-slide piles are studied under different anchorage depths of the front-row and back-row anti-slide piles. It is found that the deflection,bending moment,shear force and sliding resistance are affected by the anchorage depths of the front-row and back-row anti-slide piles;what?s more,the affected degree is related to the values of displacement applied on the boundary of sliding mass.
KANAGASABAI S,SMETHURST J A,POWRIE W. Three-dimensional numerical modelling of discrete piles used to stabilize landslides[J]. Canadian Geotechnical Journal,2011,48(9):1 393-1 411.
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