单项选择题
钢筋混凝土单跨梁,截面及配筋如图1-5-1所示。采用(;40混凝土,纵向受力钢筋为HRB400钢筋,箍筋以及两侧纵向构造钢筋为HRB335。已知该梁跨中弯矩设计值M=1460kN·m,轴向拉力设计值N=3800kN,α=as=70mm。
A.1012 B.1014 C.1116 D.1118
A.0.07,0.16 B.0.07,0.12 C.0.08,0.12 D.0.16,0.07
A.104 B.120 C.135 D.142