Page 205 - 《水资源与水工程学报》2024年第2期
P. 205

!35 "!2 #                         & ' ( ) & * + , -                               Vol.35No.2
               2024 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2024

            DOI:10.11705/j.issn.1672-643X.2024.02.23


                       ’“÷ø+@âùúûüýþøä…º»


                                                               1,2
                                                        678
               (1. =>%f1& ¯hLMÑ, ÿ! =? 10607;2. ÿó"@ÖABß+àÝ{LMß+à, 34 ŽÛ 110136)
                 A B: RS:;CWD~ÏÐEP–©mnKEF^&nÙPI^¾¿¼:;Peg킮·³þ<ýþ。
                 .þG{H’®Ã 1 I:;E'lRS¼†, JK:;E'm,‡ßŸ „ˆ, t»E·:D~ÏÐEÛE–©
                 ^、 EFÜ^.KJÏ/^‘E'nŽRS, Pn„ˆªÆj_`abªÆ.KGH+ÃßàªÆE·¼Ëˆê。
                 RSÇÈ: á^ÈAn¼:;D~ÏÐEEªý|¡¢“”, á^ÈA]nŽüõ, ®Eªý|üÒ; EFÜ
                 ^KÏ/^PåvȖúñòE¨©P$z5­$1ÁÛÒP¾¿, ™EFÿaëz{PÏ/^À1; ãGH
                 +ÃQßRIJPˆê, ‚»„ˆªÆ@ËY=¤Õ£Ò,3 •IJßàcƒúí£~µá²D~ÏÐEEFÜ
                 ^åv¾¿。RSªÆíl:;®¯ÁWPê*ê<ÂPþ<PGHGH。
                 CDE: :;E'; D~ÏÐE; –©„ˆ; Ü^; Ï/^
                 >FGHI:U443.15   JK<LM:A    JNOI:1672643X(2024)02020106

                    Bearingcharacteristicsofbridgefrictionpilesunderdifferentloads

                                                                 1,2
                                                      ZHAOLicai
                (1.DepartmentofCivilandConstructionEngineering,TaiwanUniversityofScienceandTechnology,Taipei10607,China;
                 2.TheThirdEngineeringBranchCo.,Ltd.ofChinaRailway19thBureauGroupCo.,Ltd.,Shenyang110136,China)
                 Abstract:Itisofgreatsignificancetostudythebearingcharacteristicsofcastinplacefrictionpilescon
                 structedbydrillinggroutingtechniqueandthedistributionlawofthepilemechanicalpropertiesforthe
                 safetyandstabilityofbridgeoperation.TakingthepilefoundationofChongqingSandianInterchange
                 Type1Bridgeastheresearchobject,thelaboratorytestwasdesignedaccordingtothecharacteristicsof
                 thebridgepilefoundation,andtheperformanceofthesinglepilebearingcapacity,pileaxialforceand
                 sidefrictionresistancewasstudiedsuccessively.Thenthetestresultswerecomparedwiththoseofthenu
                 mericalsimulationandtheoreticalformula.Theresultsshowthatthelithologyofthebearinglayeraffects
                 thetopdisplacementofthebridgepile ,thehigherthegeotechnicalperformanceofthebearinglayer,the
                 smallerthedisplacementamplitudeofthepiletop.Inaddition ,thevariationrangeofthepileaxialforce
                 andfrictionresistanceincreasesfirstandthendecreaseswiththeincreaseofthepiletopload ,andthe
                 frictionresistanceisthelargestinthemiddleofthepile.Accordingtotheverificationofthetheoretical
                 formulaandfiniteelementanalysis ,theoveralldeviationrateofthelaboratorytestissmall,itreflects
                 thatthevariationlawofthepileaxialforcearewellexpressedunderthesethreecalculationmethods.The
                 findingscanprovideanimportanttheoreticalsupportforthepreventionandcontrolofdamagestobridges
                 inthelaterperiodofoperation.
                 Keywords:bridgepilefoundation;castinplacefrictionpile;loadbearingtest;axialforce;frictional
                 resistance






                !"#$:20220803; %&#$:20231127
                '()*: 34ô“ ì3w$ß³” óR53$)*(XLYC2007146); ÿ!óh6žß+à%fRSÓ÷ß³)*
                        (2020C20)
                +,-.: Ð[7(1985—), X, 34893, 45, †õ‘LM:, RScÙl:;j‡±Žh&K;åê<GH。
   200   201   202   203   204   205   206   207   208   209   210