题 13-11 T形截面铸铁悬臂梁,尺寸及荷载如题图 13-11 所示。已知材料的许用拉-|||-应力 [ (sigma )_(1)] =40MPa ,许用压应力 [ (sigma )_(c)] =80MPa ,截面对形心轴的惯性矩 _(2)=101.8times (10)^6(mm)^4 。_(1)=-|||-96.4mm。求此梁的许可荷载P的值。-|||-P 50-|||-.4 2P ↑C-|||-B-|||-1400 600 =-|||-150-|||-题图 13-11