In the conjugate-beam method, what does the bending moment at a section of the conjugate beam represent?
Correct answer: A. The deflection of the real beam
- A. The deflection of the real beam
- B. The slope of the real beam
- C. The shear force in the real beam
- D. The curvature of the real beam
Explanation
For a correctly formed conjugate beam, its shear represents the slope of the real beam and its bending moment represents the deflection. The conjugate loading is based on the real beam's M/EI diagram.
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Structural analysis determines how beams, frames, trusses and arches carry loads through reactions, shear forces, bending moments, axial forces and deflections. It covers free-body diagrams, equilibrium equations, determinacy, influence lines and methods such as slope deflection, moment distribution and virtual work, while distinguishing analysis of a structure from its design.
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