A、M=30kN·m,N=200kN
B、M=50kN·m,N=300kN
C、M一30kN·m,N=205kN
D、M=50kN·m,N=305kN
正确答案:B
答案解析:ξb=0.55,则Nb=a1fcbh0ξb=1.0×9.6×400×365×0.55=770.88kN,N

A、M=30kN·m,N=200kN
B、M=50kN·m,N=300kN
C、M一30kN·m,N=205kN
D、M=50kN·m,N=305kN
正确答案:B
答案解析:ξb=0.55,则Nb=a1fcbh0ξb=1.0×9.6×400×365×0.55=770.88kN,N