CE767 HW1 – Solution March 2015
Mid-span moments are determined based on a moving vehicle model along the 30 meter span. In
analysis, the multiple presence factors, impact factors and alpha factors are not included. The results
are modified at the later stage of analysis.
H30S24 Truck
Impact Factor : 1.22
Multiple Presence Factor : 1.0
Moment : 3415 x 1.22 = 4166 kN-m (417 ton-m)
KMG45
Impact Factor : 1.33
Multiple Presence Factor : 1.2
Moment : 3965 x 1.33 x 1.2 = 6328 kN-m (633 ton-m)
Cooper Train
Impact Factor : 1.22
Multiple Presence Factor : 1.0
Moment : 17211 x 1.22 x 1.0 = 20997 kN-m (2100 ton-m)
LM71 Train
Impact Factor : 1.14
Multiple Presence Factor : 1.0
Moment : 12195 x 1.14 x 1.0 = 13902 kN-m (1390 ton-m)
İf alpha = 1.4 Moment = 19463 kN-m (1946 ton-m)