doi:10.3963/j.issn.1674-6066.2023.03.023横竖向地震动对滑体运动特性的影响罗平杰(中铁第四勘察设计院集团有限公司,武汉430063)摘要:采用非连续变形分析(DDA)方法,模拟边坡在横竖向地震动作用下的灾变过程,得出以下结论:(1)通过DDA方法可以有效模拟地震边坡灾变过程,获得的滑坡状态、堆积体形状、滑动速度和距离等重要信息对边坡支护设计及治理具有重大意义;(2)RSN879地震记录中,在竖向地震动作用下边坡保持稳定,无明显失稳现象;横向地震动作用下边坡失稳现象明显,其破坏程度远大于双向地震动和竖向地震动。关键词:地震边坡;非连续变形分析;运动特性;横竖向地震动InfluenceofHorizontalandVerticalGroundMotionontheMovementCharacteristicsofLandslidesLUOPing-jie(ChinaRailwaySiYuanSurveyandDesignGroupCorporation,Wuhan430063,China)Abstract:Thispaperusedthediscontinuousdeformationanalysis(DDA)methodtosimulatethedisasterprocessofslopesunderearthquakes,anddrewthefollowingconclusions:(1)Theearthquakeslopefailureprocessescouldbeef-fectivelysimulatedbytheDDAmethod,andtheimportantinformationobtained,suchaslandslidestate,moundshape,slidingspeedanddistance,wasofgreatsignificanceforslopesupportdesignandmanagement;(2)IntheRSN879seis-micrecord,thesloperemainsstableunderverticalgroundmotionwithoutobviousinstability,whiletheslopewassig-nificantlyunstableunderhorizo...