不同返包型式加筋黄土边坡振动台模型试验研究

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中图分类号：TU476.4 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202508050

Abstract：Invieoftelackofresearchotheseismicinfluencedegreeoftheback-wrappedpaneltypeontereiforcedlosslopethee setsofshakingtablemodeltestsoftebckwrapedefoedoiloewerecadoutTsposedieresofdiferetbckacking processes （Cshapedwa-aroundfacing，Secondaryeiforement wrap-aroundfcingandSelf-wrap-facing）toeiforcedosloswere explored.TheexperimentalresultsdemostratethatesloereifocedwithC-shapedwrap-aroundfacingexhibitedteighestintegral seismicesistaeceleratioampicatifctoslogesoighticeadliearlydpakedatstaoslldels. TheC-shapedwrap-aroudfacingprovidedtheosteffetiemitigatonofacelerationamplification，rducigthecrestamplificatiofactor byapproximately 3%～8% compared to theothertwo types.The failure paterns consistently combinedoutward deformation of the slope face andcrestselementTeC-shapedconfigurationdisplayedanotablysmallefilurezoneandsuperioroverallseismicperformaneCrest setlementsfollowedanonlieardistibutionwithgeatervaluesatbothndandmialdeformationinthecentralegion.Teself-apfacingsystemduetoeativelyeakrestraintinthetopwrap-aroundsectio，showedapronouedtendecyforeiforemntpout underintenseshaking，leadingtothemost severedamage.Thismodel recordedthelargest totalpermanent displacement （25.9mm ， representing 2.59% of the slope height H ）and maximum cumulative settlement （ 39.9mm ，or 3.99% of H ）at the crest. Regarding reinforcementstrainpeaktensilestrainicreasedwithringPGA，withlowerstrainsmeasuredintebotomgeogidlayers.TeCshaped

Wrap-around facing registered the lowest overall strain levels，with a maximum peak strain of 0.10% ，equivalent to 83.3% of those in the secondaryreiforcementandself-wrap-facingmodels.Thesecondaryreinforcementtypeperformedmostefectivelyinreducinginteal backfllsettent，tougtrsatioasbseedeartofce.Tsendingsofvableisihtsforteoptiddesi and typological selection of reinforced loess slopes in seismic regions.

Keywords： reinforced slopes;wrap-around facing types;seismic response;shaking table model test

中国国土面积的 6.6% 为黄土地区[]。（剩余13962字）