\râã±²¤0bÛfKN/mn?)2050.5\ra(m)\r??i(mm)16\r??A(mn?)398\r¨©îïÑ8fq=P/(lxd)=687.45/(6x4)=28.644kN/m2\r48x2.8mm!"@O.5mxO.5mp&'()*+,-./012345\r6/74568&90:U<\rN=(NGK+1,4xNQK)xlaxIb=(28.644+1.4x2.5)xO.5xO.5=8.O36kN\r1 \r[N]=30>N=8.036kN\r!"#$%\r2&?'() \rS(\r T<X=lo/i=kgi(h+2a)/i=lx1.09lx(1.5+2x0.5)/0.016=170.469<[X]=210\r!"#$%\r^S(\r T<X=lo/i=kg2h/i=1x1.755x1.5/0.016=164.531W`=210\rabcde\rS(\r T<Xi=lo/i=kg1(h+2a)/i=1.155x1.091x(1.5+2x0.5)/0.016=196.891\r^S(\r T<f2=lo/i=kpi2h/i=1.155x1.755x1.5/0.016=190.034\rhf=196.891,ijkJGJ130-2011noA.0.6,h.=0.188\rf=N/((pA)=8036/(0.188x398)=107.399N/mm2<[f]=205N/mm2\rabcde\r*+,-./0!"#$%\rrstuvw<EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\rrswxu\rp?tuvw:EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r
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