苏通大桥24m跨水上钢栈桥万能杆件受力计算书（图文并茂）

苏通大桥项目总部B1标24M跨水上钢栈桥万能杆件受力计算书计算复核审核审批编制时间二OO三年十月八日水上栈桥24M跨万能杆件受力计算书一、结构形式架空栈桥总长1854M，宽7M，起于长江大堤，止于45墩中心线后约324M。桥中心线与苏通大桥引桥轴线一致。沿着引桥每隔约300M设车辆调头平台一座。栈桥两侧设栏杆，上部结构采用型钢结构。1946轴跨间有桥墩处，上部梁板自成一体，以便整体拆卸。水上栈桥深水区和浅水区采用，下横梁采用H600200，桥墩采用桩基排架，每榀排架下设2根、3根或4根8008MM钢管桩。通航孔处桩基设斜桩并在其上安装橡胶护弦起防撞作用。自下而上依次为8008MM钢管桩，H600200下横梁，长为68M；主纵梁采用万能杆件；I28B横向分配梁，布置间距20M，长度为7M；I16纵向分配梁，布置间距40CM；10桥面花纹钢板满铺。二、荷载布置1、上部结构恒重（7米宽计算）10钢板71001785105495KN/MI16纵向分配梁369KN/MI28B横向分配梁152KN/M万能杆件纵梁125KN/MH600200下横梁72KN/根2、活荷载30T砼车履带吊65T和吊重20T施工荷载及人群荷载4KN/M2考虑栈桥实际情况，同方向车辆间距不小于24米，即一跨内同方向最多只布置一辆重车。三、上部结构内力计算栈桥断面图如下B1标水上栈桥24M跨断面图审核日期复核设计苏通大桥项目总部图名单位钢管桩万能杆件纵梁T10M花纹钢板栏杆I28B20I1640M一万能杆件内力计算计算跨径为L计24M按简支计算。万能杆件自重分配在各个节点上，这里不计算自重。1、恒载作用时受力图示和计算结果见附表。2、工况一履带65布置在跨中时计算简图按四跨连续梁计算，求出各个支点的支座反力，即为作用在万能杆件节点上的力，如下图所示76584323343536371891012451671892012242789054万能杆件受力图示节点受力结果见附表。3、工况二履带65布置在端侧时计算简图16513422328211983734204538677617254353686910301792万能杆件受力图示节点受力结果见附表。4、工况三履带65布置在靠近端侧时计算简图24163214315276376383418942053521678369271037890123万能杆件受力图示节点受力结果见附表。荷载组合和选取杆件将三种工况的受力与恒载受力叠加，找出各种型号杆件的受力最大值。（1）N1杆件12512510履带65布置在跨中时和恒载组合，6号和7号杆件内力最大。NMAX532423888/41162KN选用4组合，A424373975CM213NMAX/A13116210/9751549MPA横向分配梁内力计算1、履带65作用横向跨中时如上图示所示，考虑三根横向分配梁受力。MMAX02557140724/340KNMQMAX1333KN2、砼罐车作用时按直接作用在一根横向分配梁上。（1）300KN砼罐车半边作用在跨中时MMAX025602436KNM300KN砼罐车半边作用在支点附近时QMAX6006/246075KN（2）300KN砼罐车和空载罐车错车时6030MMAX055/246024/2055/243024/2248KNMQMAX185/2460055/2430531KN选用I28B，A6105CM2WX53429CM3MMAX/WX40103/534291497MPA纵向分配梁计算1、履带65作用时40选其中一跨作为简支计算考虑2根纵向分配梁受力M1/875522/2188KNMQ057552/2378KN2、300KN砼运输车作用时40M1/460230KNMQ60KN选用I16，A261CM2WX141CM3MMAX/WX30103/151411418MPA桥面面板计算取1米宽板条,按单向板计算,当荷载为30T砼车时为最不利。跨中弯矩MOP01251000400882122KPA有效分布宽度A04M最大弯矩为MMOP/A122/04305KPAWBH2/610012/6167105M3M/W305103/1671051826MPA200KPA满足。1651343223282119837342045386776713725435368169103017912苏通大桥项目总部单位B1标水上栈桥24M跨受力图示图名审核设计复核日期2416万能杆件I32A0I126350MT10M花纹钢板7658432343536371234568910112341561718920212245227829035843213431521763768713189420535216783625927103782910123水上栈桥24M跨万能杆件结构受力验算表工况一作用在跨中时杆件编号12345678910111213141516171819202122232425262728293031323334353637P76KN0767615215222822815215276760053853805385380538538765385380538538053853803811419019011438P58KN06666134134144144969648480048148104814810481340343403434034340341021681207224P58KN04848969614414413413466660034340343403434034481048148104814810247212016810234P4KN05454108108828256563300383803838418180181801818018180278191653913P4KN03356568282108108545400181801818018180181843838038380133965918127合计01984198439843984532453243984398419841984001415141501415141541359538765381359414151415014151415010030049364936300100工况二作用在一端时杆件编号12345678910111213141516171819202122232425262728293031323334353637P38KN00000000000038000000000000000000000000P76KN0636350450437837825225212612600986890898908989089890898908989069756744131518963P713KN0119119952952714714476476238238008484713168168016816801681680168168016816805941071833595357119P16KN02424323224241616880017170175605656056560565605656012362820124合计0206206177617761332133288888844444403819969217138731303133130313313031331303133130141119981554111666222工况三靠近端侧时杆件编号12345678910111213141516171819202122232425262728293031323334353637P38KN032322562561921921281286464004924504545045450454504545045450348288224169632P76KN01266126610161016762762508508254254008958957618180181801818018180181806331143889635381127P713KN01071071424142410681068712712356356007567560756252025225202522520252252025225205351602124689534178P16KN0214214424424318318212212106106001511510151151167575075750757507575010732137126515953合计028728731231223423415615678780022941757766823261655255205525520552552055255201623335427319511739恒载作用时杆件编号12345678910111213141516171819202122232425262728293031323334353637P125KN000000000000125000000000000000000000000P216KN01818144144108108727236360028250252502525025250252502525019816212695418P216KN036362882882162161441447272002552552165151051510515105151051510183242521810836P216KN0324324432432324324216216108108002292290229760767607676076760767601624863782716254P216KN028828857657643243228828814414400204204020420421610210201021020102102010210201444325043621672P216KN0252252504504545436361818001781780178178017812701271270127127012712701263786354279P216KN02162164324326486484324322162160015315301531530153153216153153015315301531530108324648648324108P216KN0181836365454504504252252001271270127127012712701271780178178017817809275463378126P216KN014414428828843243257657628828800102102010210201021020102102216204204020420407221636504432144P216KN0108108216216324324432432324324007676076760767607676076229022922905416227378486162P216KN072721441442162162882883636005151051510515105151051512162552550361081825232418P2