The maximum bending moment due to a train of wheel loads on a simply supported girder
A. Always occurs at centre of span
B. Always occurs under a wheel load
C. Never occurs under a wheel load
D. None of the above
Answer: Option B
Solution(By Examveda Team)
1. Wheel Load: When a train of wheel loads moves over a simply supported girder, the bending moment changes depending on the position of the wheel loads.2. Influence Line: The influence line for bending moment indicates that the maximum bending moment occurs when the wheel load is at a specific point on the span.
3. Critical Position: For the maximum bending moment to occur, the critical position of the wheel load is generally at a distance from the support, calculated based on the span and the load distribution.
4. Conclusion: Hence, the maximum bending moment due to a train of wheel loads on a simply supported girder always occurs under a wheel load.
Therefore, the correct answer is Option B: Always occurs under a wheel load.
This Question Belongs to Civil Engineering >> Structural Analysis
B