written 8.2 years ago by | modified 3.2 years ago by |
Mumbai University > Civil Engineering > Sem 5 > Structural Analysis – II
Marks: 6 Marks
Year: May 2016
written 8.2 years ago by | modified 3.2 years ago by |
Mumbai University > Civil Engineering > Sem 5 > Structural Analysis – II
Marks: 6 Marks
Year: May 2016
written 8.2 years ago by | • modified 8.2 years ago |
For AB , A=(2/3)∗31.25∗5=104.68m²X=5/2=2.5m
For BC , A=26.67∗6−2∗½∗26.67∗2=106.68m²X=6/2=3.5m
Use 3 – Moment Theorem
Assume imaginary span A’A on left side of fixed support
For span A’AB ,
MA’ * L’ + 2 MA (L’ + L1 ) + MB * L1 = 6 A’X’ / L’ + 6 A1 X1 / L1
0 + 2 MB ( 0 + 5 ) + 5 * MB = 0 + 6 * 104.68 * 2.5 / 5
10 MA + 5 MB = 314.04 ……………………………….. (1)
For span ABC ,
MA * L1 + 2 MB (L1 + L2 ) + MC * L2 = 6 A1 L1 / L1 + 6 A2 X2 / L2
5 MA + 2 MB ( 5 + 6 ) + 0 * 6 = 6 * 104.68 * 2.5 / 5 + 6 * 106.68 * 3.5 / 6
5 MA + 22 MB = 687.42 …………………………....… (2)
By solving (1) & (2) ,
MA = 17.80 KN-m
MB = 27.2 KN-m