ASTM D7258-2009 聚合物桩木的标准规范

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【英文标准名称】:StandardSpecificationforPolymericPiles
【原文标准名称】:聚合物桩木的标准规范
【标准号】:ASTMD7258-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.20
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:axialload-bearingpile;composite;fenderpile;lateralload-bearingpile;piles;polymeric
【摘要】:1.1Thisspecificationaddressestheuseofroundandrectangularcross-sectionpolymericpilesinaxialandlateralload-bearingapplications,includingbutnotlimitedtomarine,waterfront,andcorrosiveenvironments.1.2Thisspecificationisonlyapplicabletoindividualpolymericpileproducts.Sheetpileandothermechanicallyconnectedpolymericpileproductsusinginter-lockingsystems,arenotpartofthisspecification.1.3Thepilingproductsconsideredhereinarecharacterizedbytheuseofpolymers,whereby(1)thepilestrengthorstiffnessrequirestheinclusionofthepolymer,or(2)aminimumoffiftypercent(50%)oftheweightorvolumeisderivedfromthepolymer.ThetypeclassificationsofpolymericpilesdescribedinSection4showhowtheycanbereinforcedbycompositedesignforincreasedstiffnessorstrength.1.4Thisspecificationcoverspolymericpilesfabricatedfrommaterialsthatarevirgin,recycled,orboth,aslongasthefinishedproductmeetsallofthecriteriaspecifiedherein.Diversetypesandcombinationsofinorganicfillersystemsarepermittedinthemanufacturingofpolymericpilingproducts.Inorganicfillersincludesuchmaterialsastalc,mica,silica,wollastonite,calciumcarbonate,etc.Pilingsareoftenplacedinservicewheretheywillbesubjectedtocontinuousdamporwetexposureconditions.Duetoconcernsofwatersensitivityandpossibleaffectsonmechanicalpropertiesinsuchserviceconditions,organicfillers,includinglignocellulosicmaterialssuchasthosemadeorderivedfromwood,woodflour,flaxshive,ricehulls,wheatstraw,andcombinationsthereof,arenotpermittedinthemanufacturingofpolymericpilingproducts.1.5Thevaluesarestatedininch-poundunitsasthesearecurrentlythemostcommonunitsusedbytheconstructionindustry.1.6PolymericpilesunderthisspecificationaredesignedusingdesignstressesdeterminedinaccordancewithTestMethodsD6108,D6109,andD6112andprocedurescontainedwithinthisspecificationunlessotherwisespecified.1.7Althoughinsomeinstancesitwillbeanimportantcomponentofthepiledesign,frictionalpropertiesarecurrentlybeyondthescopeofthisdocument.1.8Criteriafordesignareincludedaspartofthisspecificationforpolymericpiles.CertainTypesandsizesofpolymericpileswillbebettersuitedforsomeapplicationsthanothers.PolymericpilesdesignedandmanufacturedunderthedifferentTypeclassificationsasdefinedwithinthisspecificationwill,asawhole,exhibitawide-rangeofmechanicalproperties.Forexample,a10-in.diameterTypeII,choppedglassfiberreinforcedhigh-densitypolyethylene(HDPE)pilewilllikelyhaveanapparentstiffnessmuchdifferentthana10-in.diameterTypeV,glassfiberreinforcedcompositetubefilledwithconcrete.Similarly,theultimatemomentcapacityofthesetwoexamplepileswillalsolikelybesignificantlydifferentfromeachother.UseofalicensedProfessionalEngineeris,therefore,highlyrecommendedfordesigningandselectingpolymericpilesinaccordancewiththisspecification.1.9Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoknownISOequivalenttothisspecification.
【中国标准分类号】:G33
【国际标准分类号】:83_140_99
【页数】:17P.;A4
【正文语种】:英语