A?65?1?32?1.2?2?141.8cm2 Ix?1?(32?67.43?31?653)?107037cm3 121Iy??1.2?323?2?6554cm3
12W1x?Ix107037?2??3176.17cm3 h/267.4ix?Ix107037??27.47cm A141.8Lox800??29.12查表?x?0.9386 ix27.47M290?0.65?0.35??0.883 M1135?x??mx?0.65?0.35N'Ex?2EA?2?206000?141.8?102???30876.45KN 221.1?x1.1?29.12?mxMx?xW1x(1?0.8N)'NEx0.883?135?106
N??xA900?103??20.9386?141.8?109001.05?3176.17?103(1?0.8)30876.45?104.2N/mm2?f?215Nmm2
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