In the slope-deflection analysis of a sway frame, which additional nodal quantity is generally included besides joint rotations?
Correct answer: C. The lateral translation of a joint or storey
- A. The elastic modulus of each member
- B. The density of the applied load
- C. The lateral translation of a joint or storey
- D. The plastic moment of each support
Explanation
A sway frame allows lateral joint translation, so the slope-deflection equations include displacement terms in addition to end rotations. A nonsway frame normally assumes these lateral translations are restrained or otherwise zero.
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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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