Finite Element Analysis of Shear Performance of Transmission Line Micro-pile in Rocky Mountainous Area
Due to the advantages of simple structure,short construction period and green environmental protection,micro-pile has an extensive application prospect in transmission line engineering of rocky mountainous area,which also conforms to the mechanized construction direction of State Grid Corporation of China.Using finite element analysis,a shear mechanical model for micro-piles in rocky mountainous areas for power transmission lines was developed.The bearing capacity of micro-piles under horizontal loads was explored,and then the effects of different pile diameters,elastic moduli of the pile bodies,and geological pa-rameters of the rock on the shear performance of the micro-piles were discussed.The results indicate that,in addition to geolog-ical parameters,the shear performance of micro-piles in mountainous power transmission lines is also influenced by the geomet-ric parameters of the pile body.With the increase in pile diameter and elastic modulus of the pile body,the shear performance of the micro-piles correspondingly improves,and pile diameter has the most significant influence on horizontal bearing capacity.With the increase of the elasticity modulus,friction angle and cohesion force of the soil,the displacement of the pile body decrea-ses nonlinearly.The friction angle has the greatest effect on the horizontal displacement,while the elasticity modulus of the soil has the least effect.
transmission linemicro-pileshear performancebearing capacityfinite element analysis
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