简介：Theeffectsofstabilizingpilesonthestabilityofanembankmentslopeareanalyzedbynumericalsimulation.Theshearstrengthreductionmethodisusedfortheanalysis,andthesoil-pileinteractionissimulatedwithzero-thicknesselasto-plasticinterfaceelements.Effectsofpilespacingandpilepositiononthesafetyfactorofslopeandthebehaviorofpilesundertheseconditionsaregiven.Thenumericalanalysisindicatesthatthepositionsofthepilehavesignificantinfluenceonthestabilityoftheslope,andthepileneedstobeinstalledinthemiddleoftheslopeformaximumsafetyfactors.Intheend,thesoilarchingeffectcloselyassociatedwiththespacebetweenstabilizingpilesisanalyzed.Theresultsarehelpfulfordesignandconstructionofstabilizingpiles.

简介：Purpose:Thisstudywasdesignedtocharacterizeandcomparethevertical(kvert)andleg(kleg)stiffnessmeasuredduringrunningintwodifferentfootwearconditionsonnegative,level,andpositiveslopes,usingkinematicdataonly.Methods:Fourteenmalerecreationalrunners(age23.44.4years,height177.55.2cm,andbodymass69.55.3kg)weretestedon2separatedayswithin1week.Ateachsession,subjectsranseven5-mintrialsonatreadmillat10km/h,interspersedwith5minofsittingpassiverecovery.Eachtrialwasperformedonadifferentslopegradient,rangingfrom8%(downhill)tot8%(uphill),assignedinarandomorder.Furthermore,eachsubjectranone5-mintrialwearingminimalshoes(MS)andthesubsequenttrialwearingtraditionalshoes(TS)inacounterbalancedrandomizedorderensuringthateachslopewasranonceinMSandonceinTS.Kinematicdatawerecollectedusingaphotocellmeasuringsystemandhigh-speedvideocamera,withkvertandklegstiffnessbeingcalculatedfromthesedata.Results:Legcompression,contacttimes,andverticaldisplacementofthecenterofmassduringrunningweresignificantlysmallerinMScomparedtoTSacrossallslopes.Inthetwofootwearconditions,stepfrequencysignificantlyincreasedwitha(positive)increaseinslope.KinematicanalysesindicatedthatklegwasgreaterwhenrunninginMSthanTSandthisbetween-footweardifferenceremainedsimilaracrossslopes.Onthecontrary,kvertdidnotchangeonthebasisoffootwear,butincreasedwithpositiveincreasesinslope.Conclusion:Thisstudyshowedthatkvertandklegduringrunningresponddifferentlytochangeinfootwearand/orslope.Thesetwostiffnessmeasurescanhenceprovideauniqueinsightonthebiomechanicaladaptationsofrunningundervaryingconditionsandtheirrespectivequantificationmayassistinfurtheringourunderstandingoftraining,performance,and/orinjuryinthissport.

简介：摘要近几年，随着我国大规模的基础建设发展，山区公路建设也经历跨越式发展，在公路建设中形成大量高边坡，存在产生滑动变形的隐患，因此根据相关勘察资料对高边坡稳定性进行正确分析，指导治理工程设计，确保边坡稳定具有重要意义。本文以某路堑高边坡为例，利用Geo-slope/W软件对削坡后边坡稳定性进行计算分析，并提出合理的削方及处治方案。