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【英文标准名称】:StandardPracticeforEstablishingAllowableStressesforRoundTimbersforPilesfromTestsofFull-SizeMaterial
【原文标准名称】:标准材料试验中桩用圆木允许应力的建立用标准实施规程
【标准号】:ASTMD7381-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D07.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:允许;桩;锯成木材;应力;试验;木料;木材
【英文主题词】:design;piles;stresses;timber
【摘要】:Thispracticeisprimarilyintendedforusebyassociations,third-partygradingagencies,technicalsocietiesandothergroupsthatdevelopnationaldesignstandardsanduserecommendationsforroundtimberpiles.Thispracticeprovidesproceduresforestablishingcompressionparalleltograinandbendingstressesforroundtimberpilesincluding:samplingofmaterialfortesting;methodsoftestandpropertycalculationprocedures;distributionanalysisoftestdata;proceduresfordeterminingadjustmentsforcriticalsectionlocation;pileoversize,loadsharingandtreatment;andproceduresforderivingallowablestresses.Inusingallowablestressesestablishedunderthispractice,factorsspecifictoeachendusewhichmayaffecttheperformanceofthepilesystemshallbeconsideredbythedesigner.Suchfactorsincludethelocationofthecriticalsection,thebearingcapacityofthesoil,theabilityofthepiletowithstanddrivingforces,thepropertiesofthecaporloaddistributiveelementtyingpilestogetherandtheloadingandconditionsofservice.1.1Thispracticecontainsproceduresforestablishingallowablecompressionparalleltograinandbendingstressesforroundtimbersusedforpiling,basedonresultsfromfull-sizetests.Note1AllowablestressesforcompressionperpendiculartograinandshearpropertiesareestablishedinaccordancewiththeprovisionsofPracticeD2899.1.2Stressesestablishedunderthispracticeareapplicabletopilesconformingtothesize,quality,straightness,spiralgrain,knot,shakeandsplitprovisionsofSpecificationD25.1.3AcommentaryonthepracticeisavailablefromASTMInternational.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B68
【国际标准分类号】:79_040
【页数】:6P.;A4
【正文语种】: