Question

a influence line question , use muller breslau principle

B Hinge 2 m 2 m 2m 4 m

CALCULATION KEY ORDINATES OF THE influence diagrams drawn.

Q1) Draw the influence line for reaction at A.   

Q2)Draw the influence line for shear D.

Q3)Draw the influence line for moment at D.   

Q4)Draw the influence line for moment at C.

Q)5The live load is 100kN/m. Calculate the maximum positive and moment that could be generated at point D to the uniform live load

Answer 1

A infelence line question quie 1 draw the infulance line for rection A que 3 dra the infulance line for moment D implies que 3 que 2 Draw the infulance line for snear D que 4 draw the infulance line for moment C ques the line load is 100 kn/m calculate the maximum positive and moment that could be generated point D to uniform live load Benallng moment = intensity of live load times area of I under line 100 times [1/2 (6 times 1.33) - 1/2 (4 times 1.33)] = 100 (3.99 - 2.66) = 100 times 1.33 = 133 kn/m^2