含软弱夹层锚框支护边坡的地震动响应与动力稳定性研究

含软弱夹层锚框支护边坡的地震动响应与动力稳定性研究摘要：含软弱夹层锚框支护边坡是一种常见的边坡支护措施，具有结构简单、施工方便、经济实惠等优点。然而，在地震作用下，边坡的动力稳定性和变形性能容易受到影响。本文通过数值模拟和现场振动台试验研究了含软弱夹层锚框支护边坡的地震动响应和动力稳定性。结果显示，在不同地震动作用下，边坡的变形和损伤主要集中在软弱夹层附近，锚框的损伤程度较轻。此外，在锚杆布置和锚杆间距合理的情况下，锚固体系的动力稳定性较好，并且在地震作用下有较好的抗震性能。

关键词：含软弱夹层锚框支护边坡；地震动响应；动力稳定性；数值模拟；现场试验

Abstract:Theanchorsupportwithsoftweakinterlayerisacommonslopesupportmeasure,whichhastheadvantagesofsimplestructure,convenientconstructionandeconomicbenefits.However,undertheactionofearthquake,thedynamicstabilityanddeformationperformanceoftheslopeareeasilyaffected.Inthispaper,numericalsimulationandon-sitevibrationtabletestwereusedtostudytheseismicresponseanddynamicstabilityoftheanchorsupportwithsoftweakinterlayer.Theresultsshowedthat,underdifferentearthquakeactions,thedeformationanddamageoftheslopeweremainlyconcentratednearthesoftweakinterlayer,andthedamageoftheanchorframewasrelativelylight.Inaddition,thedynamicstabilityoftheanchoringsystemwasgoodandhadgoodseismicperformanceunderthereasonablearrangementofanchorbarsandanchorbarspacing.

Keywords:anchorsupportwithsoftweakinterlayer;seismicresponse;dynamicstability;numericalsimulation;on-sitetesTheresultsofthenumericalsimulationandon-sitetestingdemonstratedtheeffectivenessoftheanchorsupportsystemwithsoftweakinterlayerunderseismicactions.Thedeformationanddamageoftheslopeweremainlyconcentratednearthesoftweakinterlayer,whichindicatedthattheanchorsupportsystemcouldeffectivelyreinforceandstabilizetheweakzoneoftheslope.Meanwhile,thedamageoftheanchorframewasrelativelylight,whichindicatedthattheanchorframehadgoodseismicresistance.

Moreover,thedynamicstabilityoftheanchorsupportsystemwasgood,asthereasonablearrangementofanchorbarsandanchorbarspacingcouldeffectivelycontrolthedeformationanddisplacementoftheslopeunderearthquakeactions.Thisdemonstratedthattheanchorsupportsystemhadgoodseismicperformance,whichcouldeffectivelyreducetheriskofslopeinstabilityandprotectthesafetyofadjacentbuildingsandfacilities.

Inconclusion,theanchorsupportsystemwithsoftweakinterlayerisaneffectiveandreliablemethodforslopereinforcementandstabilizationunderseismicactions.Theresultsofthisstudyprovideabasisforthedesignandconstructionofsimilaranchorsupportsystemsinearthquake-proneareasMoreover,thedesignandconstructionofanchorsupportsystemswithsoftweakinterlayershouldconsiderthefollowingfactors:

1.Soilparameters:Thepropertiesofthesoilsuchasshearstrength,deformationmodulus,andPoisson'sratioshouldbedeterminedaccuratelytoensurethestabilityandsafetyoftheslope.

2.Anchorparameters:Thelength,diameter,andspacingoftheanchorshouldbedesignedcarefullyaccordingtothesoilpropertiesandtheslopegeometry.

3.Interlayerparameters:Thethickness,strength,anddeformationcharacteristicsoftheinterlayershouldbeselectedbasedonthegeologicalconditionsoftheslope.

4.Seismicintensity:Theseismicintensityoftheslopeshouldbeassessedtodeterminetheappropriatelevelofreinforcementrequiredfortheanchorsupportsystem.

5.Constructionqualitycontrol:Theconstructionoftheanchorsupportsystemshouldbeconductedbyaqualifiedteamwithappropriatequalitycontrolmeasuresinplace.

Overall,theanchorsupportsystemwithsoftweakinterlayerisapromisingsolutionforslopestabilizationinearthquake-proneareas.However,furtherinvestigationsareneededtoassessthelong-termperformanceanddurabilityofthesystem,andtooptimizeitsdesignandconstructiontoensuremaximumeffectivenessandsafetyInordertoensurethesuccessoftheanchorsupportsystem,properqualitycontrolmeasuresmustbetakenduringtheconstructionprocess.Thisincludesmakingsuretheteamresponsibleforbuildingthesystemisqualifiedandexperiencedinthistypeofwork.Theyshouldfollowestablishedconstructionproceduresandindustrystandardstoensureconsistencyandreliability.

Additionally,itisimportantfortheteamtoperformregularqualitycontrolcheckstomonitortheprogressandqualityofthework.Thiscouldincludereviewingthedesignplans,inspectingmaterialsandequipment,andperformingteststoensurethesystemisfunctioningasintended.

Qualitycontrolalsoinvolvesproperdocumentationandrecordkeepingthroughouttheconstructionprocess.Thisinformationcanbeusedtotrackprogress,identifyanyissuesorareasthatneedimprovement,andensureaccountabilityfortheworkthatisbeingdone.

Whilequalitycontrolmeasuresareimportantinanyconstructionproject,theyareespeciallycriticalwhenitcomestobuildingaslopestabilizationsysteminanearthquake-pronearea.Thesafetyofeveryoneinvolved–fromtheconstructionworkerstotheresidents–reliesontheeffectivenessandreliabilityoftheanchorsupportsystem.

Inordertoaddressthisissue,engineersandconstructionprofessionalsshouldworktogethertoestablishbestpracticesandguidelinesforbuildingthesetypesofsystemsinearthquake-proneareas.Thiscouldinvolveresearch,testing,andcollaborationwithindustryexpertstoidentifythemosteffectiveandrobustdesignsandmaterialstouse.

Inconclusion,theanchorsupportsystemwithsoftweakinterlayerholdsgreatpromiseasasolutionforstabilizingslopesinearthquake-proneareas.However,itisimportantto