Given the following wheel loads as shown, determine the following
a. Maximum support reaction at B
b. Maximum support reaction at D
c. Maximum shearing force
d. Maximum bending moment
10 KN 20 kN 40 KN 1.5m 3.0m A B с D
by using influence line diagram,
1) maximum support reaction at B= 10×1=10 kN
2) maximum support reaction at D = 1×40 = 40 kN
3) maximum shear force= support reaction at D= 40 kN
4) maximum bending moment at B=0
Maximum bending moment at D=0 ( here wheel loads are fixed in supports B,C and D . That’s why moment becomes zero.
Note: if the wheel loads are moving
For maximum support reaction at B is obtained by placing 40kN at B.
For rection D place 40 kN at D
Like that we want adjust the load,
Problem I have done like this because span lengths are not fully given.