Page 156 - 《水资源与水工程学报》2022年第2期
P. 156

!33 " ! 2 #                       & ' ( ) & * + , -                               Vol.33No.2
               2022 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2022

            DOI:10.11705/j.issn.1672-643X.2022.02.20


                   Ù+:6À5”;‹oia<=ç%‚ST


                                            1         1         2        1         1
                                     Z¾- , Z-3 , Z¿À , # Á , #ÂÃ
                  (1. ~±3% U/Uú%j, È) q8 210098;2. q8ûûy-;4Fjob=±Üx, È) q8 210008)
                 C D: ÖV:•¹, mUàga:W、 U、 Ö+p¼þ:•ßà。ÙÚ¾éà7¦ i - 3âäÀ - a:
                 W - Ö+ - U¥¦obºš›, +‹«A¦Žšì igUp¼þ:•, þ•LQëOa˜ÂšMÖ+‘
                 ’Â], 4F igU、 a:WwÖ+p¸Þ¼þ:•œmU०¦µìÙTëwÖV¸ÞsØprs。 
                 ¡¢£: kÃÂÐU„¹, a:WpÊk'šmUà ipIAS„f±3sÒ 25.15%, Ûøž±3sÒ
                14.33%, mUàHÒC±3«ØÞºƒ*Á 12.0%4¨; šMÖ+p‘’Â]pØr, mUà ip¸ÞsØ£
                 ËsÒ, ¬HÒCp±3«ØÞºƒ*Á 40%4¨。¼œa:W, Ö+‘’Â]p؜mUàÖV:•¹¸UO
                 Þ、 Ûøž、 „fwØÞsØprsÛËÌ。
                 EFG: mUà; ðVëI; a:W; «A¦; ¸UOÞ; LQëOa˜Â
                 HIAJK:TV312   LMNOP:A    LQRK:1672643X(2022)02015206

                            Influenceofworkingbridgeonseismicperformanceof
                                         integralsystem ofintaketowers

                                  1
                                                                       2
                                                                                                      1
                                                                                     1
                                                    1
                   ZHANGHanyun,ZHANGYunjuan,ZHANGShengtai,WANGChen,WANGYingjie
                      (1.CollegeofWaterConservancyandHydropowerEngineering,HohaiUniversity,Nanjing210098,China;
                            2.NanjingMunicipalDesignandResearchInstituteCo.,Ltd.,Nanjing210008,China)
                 Abstract:Theinteractionbetweentheintaketower,workingbridge,reservoirwaterandfoundationis
                 complexunderseismicactions.Theintegralfiniteelementmodelofthetowerbody-hoistchamber-
                 workingbridge-foundation -reservoirwaterwasestablished ,withwhichtheinteractionbetweenthe
                 structureandreservoirwaterwassimulatedbasedonthepotentialfluidtheory,andthefoundationradia
                 tiondampingeffectwasinvestigatedusingtheviscoelasticartificialboundary.Inturn,theeffectofdy
                 namicinteractionsbetweenstructure,reservoirwater,workingbridgeandfoundationonthenaturalvibra
                 tioncharacteristicsandseismicresponseoftheintegralintaketowersystemwasstudied.Theresultsshow
                 thatthedownstreamdisplacementandaccelerationoftheintaketowercanbereducedby25.15% and
                14.33% respectively ,andthemaximumtensilestressofkeypointsoftheintaketowercanbereducedby
                 morethan12.0%,withthepresenceoftheworkingbridgeatnormalwaterlevel.Thedynamicresponse
                 oftheintaketowerstructureisobviouslyreducedwhenconsideringthefoundationradiationdamping
                 effect ,andthemaximumtensilestressofthekeypointcanbereducedbymorethan40%.Compared
                 withtheworkingbridge ,thefoundationradiationdampingeffecthasamoresignificantinfluenceonthe
                 hydrodynamicpressure ,acceleration,displacementandstressresponseoftheintaketowerunderseismic
                 actions.
                 Keywords:intaketower;seismicperformance;workingbridge;potentialflow;hydrodynamicpressure;
                 viscoelasticartificialboundary






                !"#$:20210606; %&#$:20211230
                '()*: öwìí(%+,-.(51709090); È)#ìí(%+,-.(BK20170884)
                +,-.: ã80(1984-), L, 0q¬O, PQ, y<`, uQGab, 4FRSTUa iðVsÙ4F。
   151   152   153   154   155   156   157   158   159   160   161