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[单选题]
某水电站风罩为圆筒式结构,已知风罩外直径为1380cm,风罩内直径为1260cm,风罩高为4.45m,风罩内未设置千斤顶,风罩顶部所受的弯矩值为M0=175kN·m,又知风罩内部与外部的温度差△t=25℃。混凝土骨料为安山岩,混凝土温度线膨胀系数αt=1×10-5℃-1,则该圆筒式风罩结构所受的最大竖向弯矩Mx为( )kN·m。
A.-260.2
B.-270.2
C.-275.2
D.-281.2
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.-260.2
B.-270.2
C.-275.2
D.-281.2
A.1282
B.1284
C.1286
D.1288
A.错误
B.正确