【英文标准名称】:Petroleumandnaturalgasindustries-Specificrequirementsforoffshorestructures-Seismicdesignproceduresandcriteria
【原文标准名称】:石油和天然气工业.海上建筑物的特殊要求.地震设计规程和标准
【标准号】:BSENISO19901-2-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-04-07
【实施或试行日期】:2005-04-07
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:天然气工业;平台;天然气;地震;海上平台;试验;石油工业;定义;土工学;方法;基础;稳定性;近海建设工程;工业;土壤普查;石油;设计;地震荷载
【英文主题词】:
【摘要】:ISO19901-2:2004containsrequirementsfordefiningtheseismicdesignproceduresandcriteriaforoffshorestructures;guidanceontherequirementsisincluded.Therequirementsareapplicabletofixedsteelstructuresandfixedconcretestructures.Theeffectsofseismiceventsonfloatingstructuresandpartiallybuoyantstructuresarealsobrieflydiscussed.Thesite-specificassessmentofjack-upsinelevatedconditionisonlycoveredinISO19901-2:2004totheextentthattherequirementsareapplicable.Onlyearthquake-inducedgroundmotionsareaddressedindetail.Othergeologically-inducedhazardssuchasliquefaction,slopeinstability,faults,tsunamis,mudvolcanoesandshockwavesarementionedandbrieflydiscussed.Therequirementsareintendedtoreduceriskstopersons,theenvironment,andassetstothelowestlevelsthatarereasonablypracticable.Thisintentisachievedbyusingseismicdesignprocedureswhicharedependentontheplatform'sexposurelevelandtheexpectedintensityofseismiceventsandatwo-levelseismicdesigncheckinwhichthestructureisdesignedtotheultimatelimitstate(ULS)forstrengthandstiffnessandthencheckedtoabnormalenvironmentaleventsortheaccidentallimitstate(ALS)toensurethatitmeetsreservestrengthandenergydissipationrequirements.Forhighseismicareasand/orhighexposurelevelfixedstructures,asite-specificseismichazardassessmentisrequired;forsuchcases,theproceduresandrequirementsforasite-specificprobabilisticseismichazardanalysis(PSHA)areaddressed.However,athoroughexplanationofPSHAproceduresisnotincluded.Whereasimplifieddesignapproachisallowed,worldwideoffshoremapsareincludedthatshowtheintensityofgroundshakingcorrespondingtoareturnperiodof1000years.Insuchcases,thesemapsmaybeusedwithcorrespondingscalefactorstodetermineappropriateseismicactionsforthedesignofastructure.
【中国标准分类号】:E94
【国际标准分类号】:75_180_20;91_120_25
【页数】:58P;A4
【正文语种】:英语