Thispaperdescribesaquasi-statictestprogramfeaturinglateralcyclicloadingonsinglepilesinsandysoil.Thetestswereconductedon18aluminummodelpileswithdifferentcrosssectionsandlateralloadeccentricityratios,e/d,(eisthelateralloadeccentricityanddisthediameterofpile)of0,4and8,embeddedinsandwitharelativedensityof30%and70%.Theexperimentalresultsincludelateralload-displacementhysteresisloops,skeletoncurvesandenergydissipationcurves.Lateralcapacity,ductilityandenergydissipationcapacityofsinglepilesunderseismicloadwereevaluatedindetail.Thelateralcapacitiesandtheenergydissipationcapacityofpilesindensesandweremuchhigherthaninloosesand.Whenembeddedinloosesand,themaximumlateralloadandthemaximumlateraldisplacementofpilesincreasedase/dincreased.Onthecontrary,whenembeddedindensesand,themaximumlateralloadofpilesdecreasedase/dincreased.Pileswithahigherloadeccentricityratioexperiencedhigherenergydissipationcapacitythanpileswithe/dof0inbothdenseandloosesand.Atagivenlevelofdisplacement,pileswithcircularcrosssectionsprovidedthebestenergydissipationcapacityinbothlooseanddensesand.
