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1、EuropeanJournalofEnvironmentalandCivilEngineering,2015Vol.19,No.7,773–788,http://dx.doi.org/10.1080/19648189.2014.970703Relationshipbetweencell-indicatedearthpressuresandfieldearthpressuresinbackfillsa,bacaJi-chengWang*,Jian-linYu,Shi-guoMaandXiao-nanGongaRes
2、earchCenterofCoastalandUrbanGeotechnicalEngineering,ZhejiangUniversity,bcHangzhou,China;TaizhouVocationalandTechnicalCollege,Taizhou,Zhejiang,China;NingboUrbanConstructionInvestmentHoldingCompanyLimited,Ningbo,Zhejiang,China(Received22February2014;accepted2
3、3September2014)PressurerCindicatedbyearthpressurecell(EPC)oftendeviatesfromfieldearthpressurerS.EPCinnormallyconsolidatedsoilwasanalysedwithTaylor’sindenta-tionmethod.ItisfoundthatrS=rCassumesalinearrelationshipwithsoil’scompres-sionmodulusESandrC[rS.Whenpre
4、consolidationpressureimposedonoverconsolidatedsoilisunloaded,soil’sreboundstrainisgreaterthanEPC’s,andagapbetweenEPC’ssensingplateandsoilappears.Uponreloading,contactbetweensensingplateandsoilresemblessphericalcontact.ThiscontactwasanalysedwithHertz’ssoluti
5、onanditisfoundthatrisindirectratiowithr1:5,andrislessCSCthanrSforarelativelylowearthpressureandrCisgreaterthanrSforarelativelyhighearthpressure.Earthpressuremeasurementexperimentswereconductedwithriversand.Experimentalresultsconformtothetheoreticalanalysish
6、ereinforarelativelylowearthpressuremadeinthispaper.Keywords:earthpressurecell;normallyconsolidatedsoil;overconsolidatedsoil;EPC-indicatedpressure;fieldearthpressure;backfill1.IntroductionEarthpressurecell(EPC)isdifferentfromsurroundingsoilintermsofmodulus,Poi
7、sson’sratio,etc.Asan“inclusion”,EPCchangessoil’sstressfield.EPC-indicatedpressurerCdeviatesfromfieldearthpressurerS.Soil’smodulusisusuallysmallerthanEPC’smodulusand,whenloaded,thestresssoilreceivesislowerthanthestressEPCreceives.Taylor(1945)conductedatheoreti
8、calresearchintothisissueandproposedTaylor’sindentationapproach.Ifsoiliscompressed,EPC’sstrainissmallerthansoilandDownloadedby[UniversityofWesternOntario]at10:0808July2015itsupperandlowersurfacespenetra
