Page 196 - 《水资源与水工程学报》2022年第4期
P. 196

!33 " ! 4 #                       & ' ( ) & * + , -                               Vol.33No.4
               2022 $ 8 %               JournalofWaterResources&WaterEngineering                 Aug.,2022

            DOI:10.11705/j.issn.1672-643X.2022.04.26


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                 FGHIJ:U456.31   KLMNO:A    KPQJ:1672643X(2022)04019210
                      Correctedsolutionofcomplexfunctionforgrounddisplacement

                                       causedbyshieldtunnelconstruction

                                                  YANLi,YANGHaitao
                      (SchoolofCivilEngineering,ChangshaUniversityofScienceandTechnology,Changsha410114,China)
                 Abstract:Inordertoobtainthegrounddisplacementvariationcausedbyshieldtunnelconstruction,the
                 complexfunctionisusedtoobtaintheanalyticalsolutionofthetunnelaftershieldexcavationbasedon
                 displacementcontrolledboundaryconditions.Inthecalculationandanalysisprocess ,thedisplacement
                 releasecoefficientisintroduced ,andthedisplacementprocessoflininglaggingbehindtheexcavation
                 surfaceisfullyconsidered.Thetheoreticalcalculationsolutioniscorrectedbysettingthedisplacement
                 constraintpoint ,inordertoobtainamoreaccuratesurfacerelativedisplacement.Then,fouractual
                 shieldtunnelprojectsareselectedforthecasestudywiththeconsiderationoffourtypicalcaverndisplace
                 mentboundaryconditions.Theinitialsolutionofthesurfacedisplacementobtainedbythetheoreticalcal
                 culationiscomparedwiththecorrectedsolutionandthefieldmeasureddata.Theresultsshowthatno
                 matterwhichkindofcaverndisplacementboundaryconditionisselected ,theconsistencybetweenthe
                 correctedsurfacedisplacementvalueandthemeasuredvalueissignificantlyimprovedcomparedwiththe
                 initialsolution,amongwhichthecorrectedsurfacedisplacementsolutioncalculatedbythefourthdis
                 placementboundaryconditionhasthehighestconsistencywiththemeasuredvalue.Finally,theinfluence
                 ofdifferentdisplacementreleasecoefficients ,burieddepthsandradiionsurfacedisplacementisanalyzed
                 usingthefourthcaverndisplacementastheboundarycondition.Theresultsshowthatthesurfacesettle
                 mentandinfluencerangedecreasewiththeincreaseofthedisplacementreleasecoefficient;withthein
                 creaseoftheburieddepth ,thesurfacesettlementdecreasesbutthewidthofthesettlementtroughandthe

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                ÑÒ+,: Ãüé(1995-), +, e,1., .045, ¦§Ì§Ð÷MàCGW45。
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