Question

. A uniformly distributed live load of 80 kN per metre runs of length 6 metres moves on a girder of span 16 m metres. Find the maximum bending moment and shear force at section 9 metres from the left end.

Answer 1

Answer:

Basically bending moment diagram is the integral of shear force diagram. Hence, area under the shear force diagram is the bending moment. For simply supported beam, maximum moment can be found by finding the area of shear force diagram from one end to the point where shear becomes zero.

Explanation:

For a simply supported beam, maximum bending moment is located at the point where shear is zero. This occurs because shear is the mathematical derivative of bending moment, and the maximum bending moment occurs when its derivative is zero.The greatest value of maximum bending moments calculated at various sections along the length of the span is called Absolute Maximum Bending Moment. i.e. when a train of loads is moving along a span, we can calculate maximum bending moment at a defined section by placing average load on LHS is equal to avg.

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