【单选题】Taiwan—born film-- maker Ang Lee won the Oscar for best Director at the 78 th Academy Awards, _______ the highest honour in American movie fields.
【简答题】混凝土简支T梁,计算跨径24.3m,跨中截面尺寸如图2-13-2所示,承受结构自重弯矩M GK =1233.9kN·m,汽车荷载产生的弯矩M Q1K =836.7kN·m。采用C40混凝土,配置非预应力钢筋6根直径为25mm的HRB335级钢筋,A s =2945mm 2 ,a s =53.7mm;配置预应力钢筋为4束18 5的钢丝,A p =1413.36mm 2 ,a p =137.5mm。为...
【简答题】已知安全等级为Ⅱ级的装配预应力混凝土简支T梁,截面尺寸及配筋如图2-12-10所示,计算跨径为29.14m。跨中截面承受计算弯矩M d =7600kN·m;C50混凝土;预应力钢筋采用8束24 5消除应力光面钢丝束,A p =3768mm 2 ;f pk =1670MPa。不计非预应力钢筋。验算跨中正截面抗弯承载力。