1.(单选题)如下图所示单跨简支梁,其跨中最大弯矩值是多少?

A. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563394635884.jpeg">

B. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563394688317.jpeg">

C. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563394726596.jpeg">

D. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563394783105.jpeg">

A.Q1=10kN、M1=10kN·m，Q2=0、M2=20kN·m

B.Q1=15kN、M1=10kN·m，Q2=0、M2=22kN·m

C.Q1=20kN、M1=15kN·m，Q2=5、M2=30kN·m

D.Q1=10kN、M1=20kN·m，Q2=0、M2=25kN·m

A.Q1=0.75P、M₁=3.5Pa

B.Q1=P、M1=3Pa

C.Q1=1.25P、M₁=4Pa

D.Q1=1.5P、M₁=5.5Pa

A.左支座处

B.跨中处

C.右支座处

D.全梁

A.Q2=-25kN、M2=31kN·m

B.Q2=-11kN、M2=35kN·m

C.Q2=12kN、M2=33kN·m

D.Q2=-11kN、M2=30kN·m

A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829318998.png">

B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829341277.png">

C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829400149.png">

D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829417864.png">

A.Q1=7kN、M1=26kN·m

B.Q1=8kN、M1=30kN·m

C.Q1=11kN、M1=36kN·m

D.Q1=6kN、M1=20kN·m

A.Q2=5、M2=25kN·m，Q3=-20kN、m3 =10kN·m

B.Q2=0、M2=20kN·m，Q3=-10kN、m3 =10kN·m

C.Q2=0、M2=40kN·m，Q3=-15kN、m3 =10kN·m

D.Q2=0、M2=25kN·m，Q3=10kN、m3 =15kN·m

A.σmax=1.33Mpa

B.σmax=1.53MPa

C.σmax=1.64MPa

D.σmax=1.83MPa