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4.2 (A) Md. Al - Munim 08.01.03.068
CE.416 ( pre-stressed concrete lab)
Objective
Influence line of shear for determinate structure : Determinate max/min shear due to moving load.
The structure which can be completely analyzed by static equilibrium equation are called determinate structure.
Determinate structure :
Definition : An influence line is a plot of the magnitude of the resulting reaction/axial force/shear/moment generated in a beam or structure as a unit load travels across its length. Influence lines can be generated for any of these actions (reactions, axial forces, shears, or moments) in a structure.
Introduction to Influence Lines
Influence lines are used to determine where to place moving loads on a structure to obtain maximum results (reactions, shears, moments, axial forces), and to compute these reactions or other actions (shears/moments/axial forces) once the loads are placed in critical positions.
why we use Influence Lines
A typical influence line
A typical influence line
A typical influence line
Influence line of moving load
Influence line of moving load
Influence line of moving load
Influence line of moving load
Shear due to moving load
Shear due to moving load
Shear due to moving load
Shear due to moving load