生命繩試驗方案

生命繩試驗方案TestPlanofLifeLine1.編制說明Introduction根據(jù)鋼結(jié)構(gòu)工程施工安全的需要，確保施工人員在高空作業(yè)行走安全，TeamA鋼結(jié)構(gòu)區(qū)域2M及2M以上施工區(qū)域需搭設(shè)生命線。生命線擬定每個節(jié)間范圍內(nèi)設(shè)兩名作業(yè)人員。每名作業(yè)人員按0.7KN計。Asperrequirementsofsafetyworkduringinstallationofsteel,lifelineshouldbefixedatworkingareasthatishigherthan2meters(included2meters)inTeamAtoensurethesafetyofworkmenatheight.Designatetwoworkmenineverysectionoflifeline.Takeeachworkmanfor0.7KNwhencalculating.2?技術(shù)要求TechnicalRequirement利用已有鋼柱、鋼梁，采用捆綁?？ōh(huán)固定在柱兩端，設(shè)置不高于1500M,19.3鋼絲繩。生命線的綁扎不得少于三個鎖扣，同時為了確保生命線處于拉緊狀態(tài)，一段必須安裝一個花籃螺絲，用來調(diào)節(jié)松緊度。為了減少鋼絲繩撓度并編制計算長度，沿線按不大于8000設(shè)置一個中間立桿。Usesteelcolumns,beamswhenbinding.Claspwillbefixedattheendsofcolumn.Steelwireof19.3,whichislowerthan1500meters,willbeequipped.Inordertoensurethelifelineisstressed,useatleastthreeturnbuckletoadjustthetightnesswhenbindingthelifeline.Todecreasethedeflectionofsteelwireandcalculatethelength,setanuprightpolewhichislessthan8000.搭設(shè)步驟StepsofFixing生命線：繩扣、花籃螺絲等材料必須用正規(guī)廠家并經(jīng)TOYO檢查合格后的產(chǎn)品。Lifeline:materialssuchascordlockandturnbucklemanufacturedbyqualifiedmanufacturersshouldgetinspectedandapprovedbyTOYO.生命線必須由持有有效證件的架子工搭設(shè)。Lifelineshouldbefixedbyscaffoldworkerswhohaseffectivecertificate.3） 生命線搭設(shè)完畢，必須經(jīng)TOYO檢驗，并在第一次使用前做沖擊試驗，合格后掛牌使用。Whenthelifelineisinstalled,inspectionshouldbeperformedbyTOYO.Executeimpactexperimentbeforeinitialusage.Hangtagifqualified.4） 在使用周期內(nèi)，必須經(jīng)常維護檢查。發(fā)現(xiàn)問題及時處理。Duringusingperiod,regularmaintenanceandinspectionshouldbecarriedout.Solveproblemtimely.5） 對重復(fù)搭設(shè)使用的生命線必須仔細檢查夾頭、鋼絲繩的磨損情況。如磨損情況超出規(guī)定標準，應(yīng)及時更換。Forrepeatedlyusedlifeline,checkthewearingconditionofcollets,steelwirescarefully.Ifwearingexceedstheallowablerangeofspecifications,changeshouldbemadeforwornparts.計算1）鋼絲繩計算根據(jù)立柱間距，考慮鋼柱頂部lkN的水平荷載，4kN豎向荷載，荷載示意如下圖所示（單位：kN）Accordingtothedistancebetweenposts,and1kNhorizontalloadand4kNverticalloadontopofpost,seebelow:q:■'1吋計算結(jié)果Calculationresult:應(yīng)力比及節(jié)點反力分另ij如下圖所示：Stressratioandreactionforceonconnectionseebelow:

ijiO-3.4□.785LQ應(yīng)力比圖節(jié)點反力圖StressratiodiagramReactionforcediagram由上圖可知，最大應(yīng)力比為0.91V1.0,ijiO-3.4□.785LQ應(yīng)力比圖節(jié)點反力圖StressratiodiagramReactionforcediagramFromtheabovefigure,weknowthattheMax.stressratiois0.91V1.0,whichmeetsthedesignrequirement.2)焊縫及螺栓驗算Calculationofweldseamsandbolt.焊縫驗算Calculationofweldseams由節(jié)點反力圖，得知最大節(jié)點反力X、Z方向分別為3.4kN、3.5kNFromthereactionforcediagram,weknowthattheMax.forceonXandZdirectionis3.4kN、3.5kN.L63x5角鋼與圓鋼柱角焊縫連接，采用雙面角焊縫，焊縫高度4mm,長度50mm,則35003400)+(hT)—35003400)+(hT)—$0.7X4X2X(63-4)x1.22上+(0.7x4x2x(63-4)上=13.5MPav160MPawhichmeetsthedesignrequirement.)designedbearingshearforceis14.7kN>=￡3.4designedbearingshearforceis14.7kN>=￡3.42+3.52=4.9kN,whichmeetsthe螺栓驗算Calculationofbolt.角鋼另一側(cè)加設(shè)一連接角鋼，連接角鋼與原角鋼間采用一個普通C級螺栓M12連接,其受剪承載力設(shè)計值為14.7kN>"N2+V2—卞3.42+3.52=4.9kN，滿足要求。ThetwoangleswillbeconnectedbyanotherangleandacommonCclassboltM12,thedesignrequirement.生命繩驗算Calculationoflifeline取生命繩直徑9.3mm,其抗拉強度為1670MPa,則生命繩承受拉力為(3.14x9.32)=4x1670=113384.07N=113.384kNThediameteroflifelineis9.3mm,andtensilestrengthis1670MPa,withthesafetycoefficientof3,sothebearingtensileforceis(3.14x9.32)=4x1670=113384.07N=113.384kN設(shè)懸掉重物時，鋼絲繩與水平方向夾角為3度，則其能承受的豎向重量為113.384x2xsin(3)=32kN，按一個操作工人1.5kN重量，取8倍安全系數(shù)，理論上可滿足2人施工安全32要求(計算式： 一-=2.6，取整數(shù)為2)。1.5x8Whenliftingaheavyload,andanangleof3withhorizontaldirection,thereforethevertical

bearingcapacitywouldbe113.384x2xsin(3)=32kN，suppose1.5kNforeachoperator,take3as

safetycoefficientand1.4asdynamicloadcoefficient,thebearingcapacitymeetsthedesign32

requirementwhen5workmenoperateatthesametime(calculationformula: =2.6,2.61.5x8means2operators).完驗方法InspectionMethod在現(xiàn)場實地進行試驗。具體方法為：Performexperimentatsite.Seethemethodbelow:1)準備2個1KN的沙袋，用吊機懸掛在高于3米高的部位(繩子打活結(jié))，在重物下方設(shè)置生命繩，并將沙袋用安全帶系在生命繩上，如下圖所示：Preparetwosandbags.Usecranehooktohangupthebagsattheheightofaboutthreemeters(tieslipknotforline),setbodyharnessunderheavyobject.Tiesandbagstolifelinewithbodyharness.Seetheillustrationbelow:

2）在進行試驗前，拉好警界繩，人員遠離試驗區(qū)域至少2）在進行試驗前，拉好警界繩，人員遠離試驗區(qū)域至少6米以上;-.J.)■HJ-X.cccL-z/Beforeexperiment,setwarningline.Personnelshouldbeatleast6metersawayfromexperimentarea.試驗時，地面人員牽引繩索，拉開活結(jié)，使其墜落，使之產(chǎn)生模擬沖擊力。試驗結(jié)果以兩端花籃螺栓不發(fā)生明顯變形，鋼絲繩不斷裂為合格。Whenperformingexperiment,personnelongroundpulltherope,releasetheslipknottocausethesandbagsfallfromheight.ThiswillsimulatetheImpactforce.Ifthetwoendsofturnbucklehasnoo