1、BRITISH STANDARD BS EN 13331-2:2002 Trench lining systems Part 2: Assessment by calculation or test The European Standard EN 13331-2:2002 has the status of a British Standard ICS 93.020 BS EN 13331-2:2002 This British Standard, having been prepared under the direction of the Building and Civil Engin
2、eering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 9 September 2002 BSI 9 September 2002 ISBN 0 580 40368 8 National foreword This British Standard is the official English language version of EN 13331-2:2002. The UK partic
3、ipation in its preparation was entrusted by Technical Committee B/514, Access and support equipment, to Subcommittee B/514/WG29, Trench support systems, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-refere
4、nces The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British
5、Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to
6、 the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside
7、 front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN133312 August2002 ICS93.020 Englis
8、hversion TrenchliningsystemsPart2:Assessmentbycalculationor test DispositifsdeblindagedetranchesPartie2:Evaluation parcalculsouessais GrabenverbaugerteTeil2:NachweisdurchBerechnung oderPrfung ThisEuropeanStandardwasapprovedbyCENon6July2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulat
9、ionswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(
10、English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greec
11、e, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanym
12、eansreserved worldwideforCENnationalMembers. Ref.No.EN133312:2002EEN133312:2002(E) 2 Contents page Foreword3 Introduction .4 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Symbols 4 5 General5 6 Assessmentbycalculation. 5 7 Assessmentbytesting. .6 Bibliography 7EN133312:2002(E) 3 Fore
13、word Thisdocument(EN133312:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC53“Temporaryworks equipment“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyFebruary2003,andconflictingnationalst
14、andardsshallbewithdrawnatthelatest byFebruary2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta
15、,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom. EN13331 Trenchliningsystems consistsofthefollowingparts: Part1:Productspecifications. Part2:Assessmentbycalculationortest. ThesestandardsaretobereadinconjunctionwithprEN1 28112 andprEN128113.EN133312:2002(E) 4 Introduction Tr
16、enchliningsystemsareintendedtoensurethestabilityofverticaltrenchwallsandtoprotectworkersfromthe effectsofcollapseoftrenches. Part1oftheseriesdealswithmaterialsandspecificationsonthemanufactureoftrenchliningsystems. Part2oftheseriesdealswiththeevaluationmethodsusingbothcalculationsandtestsforthetrenc
17、hlining systems. Atrenchliningsystemcomprisesavarietyofcomponents,which,whenassembled,createtrenchsupport.The instructionmanualprovidesallthenecessaryinformationonthesafeuseoftrenchliningsystems. 1Scope ThisEuropeanStandardspecifiesmethodsofcalculationandteststoassesstheconformityoftrenchlining syst
18、emswiththerequirementsofEN133311. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevision
19、sofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN100021, MetallicmaterialsTensiletestingPart1:Methodoftestatambienttemperature. EN100031, Metallicmaterials
20、BrinellhardnesstestPart1:Testmethod . EN10204, MetallicproductsTypesofinspectiondocuments. prEN128113:2001, TemporaryworksequipmentScaffoldsPart3:Loadtesting . EN133311:2002, TrenchliningsystemsPart1:Productspecifications . ENV199311:1992, Eurocode3:DesignofsteelstructuresPart11:Generalrulesandrules
21、forbuildings. ENV199911, Eurocode9:DesignofaluminiumstructuresPart11:GeneralrulesGeneralrulesandrulesfor buildings. 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninEN133311:2002apply. 4Symbols ForthepurposesofthisEuropeanStandard,thesymbolsgiveninEN1 33311:200
22、2apply.EN133312:2002(E) 5 5General 5.1 Structuralconfigurationtobeassessed Atrenchliningsystemshallbeassessedunderthestructuralconfigurationwhichwillinducethemostsevere loadingeffectsinthesystemcomponents.Alloptionsfortheassemblyofcomponentsindicatedintheinstruction manualshallbeassessed. Forslidera
23、ilsystemstwoconfigurationsshallbeconsidered: withpanelsonbothsides; withpanelsononesideonly. 5.2 Loadingconfigurationstobeconsidered AtrenchliningsystemshallbeassessedundertheconfigurationsspecifiedinEN133311:2002,7.1.1. 5.3 Choiceoftestingorcalculation 5.3.1 Assessmentshallbecarriedoutbycalculation
24、inaccordancewithENV1 993forthebendingresistanceof allpanels,sliderails,soldiersandsupportingframesandthestructuralcapacityofthefrontpullingstrutorpulling pointsofadragbox. 5.3.2 Assessmentshallbecarriedoutbystructuraltestingfortheestablishmentofthecompressiveresistanceof strutswithvariablelengthadju
25、stment. 5.3.3 Assessmentshallbecarriedoutbycalculationorstructuraltestingforallothercases,i.e.: a) thetensileresistanceofstruts; b) thecompressiveresistanceofstrutswithincrementallengthadjustmentandnonadjustablestruts; c) deflectionsofpanelsandsliderailsgiveninEN133311:2002,7.3; d) themomentsofstrut
26、topanelorsliderailconnectionsrequiredtobedeclaredinEN133311:2002,7.6.4; e)theresistanceofextracting,verticalconnectingpointsandpanelconnectorsinaccordancewith EN133311:2002,7.4.16. WherefiguresaredeclaredthatarebasedontestsnotdescribedineitherprEN128113orthisstandard,the methodusedshallbefullydocume
27、ntedinaccordancewithprEN1 28113. 6 Assessmentbycalculation AssessmentbycalculationoftherequirementsofEN133311shallbecarriedoutasfollows.Forsteelitshallbein accordancewithENV199311andforaluminiumwithENV199911.Forcastiron,ENV199311shallbeused providedthattherequirementsofENV199311:1992,3.2.2.2arefulfi
28、lled. Theinternalforcesandmomentsshallbecalculatedusingelasticanalysismethods,i.e.noplasticredistributionof momentsandforcesarepermitted. Theinfluenceofthedeflectionontheinternalforcesandmomentsshallbedeterminedeitherbyusingsecond orderanalysisorbyfirstorderanalysiscombinedwithanindirectprovisionfor
29、secondordereffects.EN133312:2002(E) 6 7 Assessmentbytesting 7.1 General Unlessotherwisestatedin7.2and7.3structuraltestingshallfollowthespecificationsgiveninprEN128113. 7.2 Examinationofmaterialproperties Therelevantmaterialspropertiesshallbetakenfrom3.1.Bcertificateswhenavailable(inaccordancewith EN
30、10204).HardnesstestsinaccordancewithEN100031shallbeperformedon20%ofthecomponentsunder testinordertoconfirmthetypeofmaterialdeclaredinthe3.1.Bcertificate. If3.1.Bcertificatesarenotavailable,yieldstrength,tensilestrengthandfractureelongationshallbecheckedin tensiletestsofrelevantmaterialsinaccordancew
31、ithEN100021. 7.3 Testprocedureforstrutswithvariablelengthadjustment 7.3.1 Principle Thestrutsamplesarelocatedinthetestapparatusandforceapplieduntilfailureoccurs.Loadanddeflectiondata isrecordedduringthetesttoenablecharacteristiccompressiveresistancetobedeterminedfromstatistical analysis. 7.3.2 Appar
32、atus Thetestapparatuscanbeanycalibrateduniversalhydraulictestingmachineofappropriatedimensionscapableof deliveringinexcessofthepredictedfailureforce. 7.3.3 Procedure a) Priortoanytest,aforceequaltotheestimatedcharacteristicresistancedividedby2shallbeappliedandthen removedinordertobeddownthetestspeci
33、menontotheendplatesofthetestapparatus. b) Ideallystrutsshouldbemountedhorizontallyinthetestapparatus,andplacedontheappropriatesectionsof panelsoldiersorsliderails. c) Wherestrutsaretestedinverticalposition,ahorizontalforcerepresentinghalftheweightofthestrutshallbe appliedinthecentreofthestrutbeforea
34、ndduringthetest. d) Foreachstrutlength,aminimumofthreeseparatetestsshallbecarriedout.Forstrutswithmorethanfour extensionsbarsaminimumofthreeseparatetestsforfourdifferentlengthsshallbeconducted.Testsshallbe conductedonthelongestandtheshorteststrutlengths.Whereonlyonecharacteristicstrutresistancefora
35、systemisdeclaredthetestsshallbecarriedoutonthelongeststrutlengthonly. e) Structuraltestsshallbecarriedoutwiththethreadedbarsextendedtotheirmaximumlength,anymoving partsbeingturnedbackbyaquarterofaturn.Nutsshallbeplacedinthemostunfavourablepositioninwhich theycanbeusedinthestruts. f) Onlyfastenersand
36、pinsspecifiedintheinstructionmanualshallbeusedtoconnectextensionbarsinthe tests.Thetighteningtorquespecifiedintheinstructionmanualshallbeapplied. 7.4 Evaluationofcharacteristicresistancefromtestresults CalculationsshallbeinaccordancewithprEN128113:2001,10.2,10.3,10.6,10.7,10.8and10.9. NOTE Aworkedex
37、ampleisgiveninprEN128113:2001,annexB.EN133312:2002(E) 7 Bibliography prEN128112, TemporaryworksequipmentScaffoldsPart2:Informationonmaterials.BS EN 13331-2:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing B
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