生命绳试验方案

生命绳试验方案TestPlanofLifeLine1.编制说明Introduction根据钢结构工程施工安全的需要，确保施工人员在高空作业行走安全，TeamA钢结构区域2M及2M以上施工区域需搭设生命线。生命线拟定每个节间范围内设两名作业人员。每名作业人员按0.7KN计。Asperrequirementsofsafetyworkduringinstallationofsteel,lifelineshouldbefixedatworkingareasthatishigherthan2meters(included2meters)inTeamAtoensurethesafetyofworkmenatheight.Designatetwoworkmenineverysectionoflifeline.Takeeachworkmanfor0.7KNwhencalculating.2・技术要求TechnicalRequirement利用已有钢柱、钢梁，采用捆绑。卡环固定在柱两端，设置不高于1500M,19.3钢丝绳。生命线的绑扎不得少于三个锁扣，同时为了确保生命线处于拉紧状态，一段必须安装一个花篮螺丝，用来调节松紧度。为了减少钢丝绳挠度并编制计算长度，沿线按不大于8000设置一个中间立杆。Usesteelcolumns,beamswhenbinding.Claspwillbefixedattheendsofcolumn.Steelwireof19.3,whichislowerthan1500meters,willbeequipped.Inordertoensurethelifelineisstressed,useatleastthreeturnbuckletoadjustthetightnesswhenbindingthelifeline.Todecreasethedeflectionofsteelwireandcalculatethelength,setanuprightpolewhichislessthan8000.搭设步骤StepsofFixing生命线：绳扣、花篮螺丝等材料必须用正规厂家并经TOYO检查合格后的产品。Lifeline:materialssuchascordlockandturnbucklemanufacturedbyqualifiedmanufacturersshouldgetinspectedandapprovedbyTOYO.生命线必须由持有有效证件的架子工搭设。Lifelineshouldbefixedbyscaffoldworkerswhohaseffectivecertificate.3） 生命线搭设完毕，必须经TOYO检验，并在第一次使用前做冲击试验，合格后挂牌使用。Whenthelifelineisinstalled,inspectionshouldbeperformedbyTOYO.Executeimpactexperimentbeforeinitialusage.Hangtagifqualified.4） 在使用周期内，必须经常维护检查。发现问题及时处理。Duringusingperiod,regularmaintenanceandinspectionshouldbecarriedout.Solveproblemtimely.5） 对重复搭设使用的生命线必须仔细检查夹头、钢丝绳的磨损情况。如磨损情况超出规定标准，应及时更换。Forrepeatedlyusedlifeline,checkthewearingconditionofcollets,steelwirescarefully.Ifwearingexceedstheallowablerangeofspecifications,changeshouldbemadeforwornparts.计算1）钢丝绳计算根据立柱间距，考虑钢柱顶部lkN的水平荷载，4kN竖向荷载，荷载示意如下图所示（单位：kN）Accordingtothedistancebetweenposts,and1kNhorizontalloadand4kNverticalloadontopofpost,seebelow:q:■'1吋计算结果Calculationresult:应力比及节点反力分另ij如下图所示：Stressratioandreactionforceonconnectionseebelow:

ijiO-3.4□.785LQ应力比图节点反力图StressratiodiagramReactionforcediagram由上图可知，最大应力比为0.91V1.0,ijiO-3.4□.785LQ应力比图节点反力图StressratiodiagramReactionforcediagramFromtheabovefigure,weknowthattheMax.stressratiois0.91V1.0,whichmeetsthedesignrequirement.2)焊缝及螺栓验算Calculationofweldseamsandbolt.焊缝验算Calculationofweldseams由节点反力图，得知最大节点反力X、Z方向分别为3.4kN、3.5kNFromthereactionforcediagram,weknowthattheMax.forceonXandZdirectionis3.4kN、3.5kN.L63x5角钢与圆钢柱角焊缝连接，采用双面角焊缝，焊缝高度4mm,长度50mm,则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螺栓验算Calculationofbolt.角钢另一侧加设一连接角钢，连接角钢与原角钢间采用一个普通C级螺栓M12连接,其受剪承载力设计值为14.7kN>"N2+V2—卞3.42+3.52=4.9kN，满足要求。ThetwoangleswillbeconnectedbyanotherangleandacommonCclassboltM12,thedesignrequirement.生命绳验算Calculationoflifeline取生命绳直径9.3mm,其抗拉强度为1670MPa,则生命绳承受拉力为(3.14x9.32)=4x1670=113384.07N=113.384kNThediameteroflifelineis9.3mm,andtensilestrengthis1670MPa,withthesafetycoefficientof3,sothebearingtensileforceis(3.14x9.32)=4x1670=113384.07N=113.384kN设悬掉重物时，钢丝绳与水平方向夹角为3度，则其能承受的竖向重量为113.384x2xsin(3)=32kN，按一个操作工人1.5kN重量，取8倍安全系数，理论上可满足2人施工安全32要求(计算式： 一-=2.6，取整数为2)。1.5x8Whenliftingaheavyload,andanangleof3withhorizontaldirection,thereforethevertical

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

safetycoefficientand1.4asdynamicloadcoefficient,thebearingcapacitymeetsthedesign32

requirementwhen5workmenoperateatthesametime(calculationformula: =2.6,2.61.5x8means2operators).完验方法InspectionMethod在现场实地进行试验。具体方法为：Performexperimentatsite.Seethemethodbelow:1)准备2个1KN的沙袋，用吊机悬挂在高于3米高的部位(绳子打活结)，在重物下方设置生命绳，并将沙袋用安全带系在生命绳上，如下图所示：Preparetwosandbags.Usecranehooktohangupthebagsattheheightofaboutthreemeters(tieslipknotforline),setbodyharnessunderheavyobject.Tiesandbagstolifelinewithbodyharness.Seetheillustrationbelow:

2）在进行试验前，拉好警界绳，人员远离试验区域至少2）在进行试验前，拉好警界绳，人员远离试验区域至少6米以上;-.J.)■HJ-X.cccL-z/Beforeexperiment,setwarningline.Personnelshouldbeatleast6metersawayfromexperimentarea.试验时，地面人员牵引绳索，拉开活结，使其坠落，使之产生模拟冲击力。试验结果以两端花篮螺栓不发生明显变形，钢丝绳不断裂为合格。Whenperformingexperiment,personnelongroundpulltherope,releasetheslipknottocausethesandbagsfallfromheight.ThiswillsimulatetheImpactforce.Ifthetwoendsofturnbucklehasnoo