Optimum Structural Design For Simultaneous Multicomponent Static And Dynamic Inputs


The method of optimality criterion and recursion precedure is employed for the design of braced and unbraced structural systems subject to various static and dynamic forces. The dynamic excitations can be applied forces, ground motions, or the equivalent seismic forces of the Uniform building Code (UBC). By using a sophisticated computer program developed, it has been found that: (1) for a set of given loads and constraints, the optimum braced system is lighter than an unbraced system, (2) the use of the natural period recommended by the code in the design yields lighter structure than that based on the period of eigensolution, (3) for seismic structural design, three to five fundamental modes are needed for adequate accuracy, and the P‐Δ effect, due to vertical ground motion and the gravity load, must be considerded because it demands heavier structural design, (4) the code does not provide an adequate structural design as the actual earthquake response spectrum requires, and (5) the interaction of three‐dimensional earthquake motions can significantly influence an optimum design and is currently under investigation. Copyright © 1978 John Wiley & Sons, Ltd


Civil, Architectural and Environmental Engineering

International Standard Serial Number (ISSN)

1097-0207; 0029-5981

Document Type

Article - Journal

Document Version


File Type





© 2023 Wiley, All rights reserved.

Publication Date

01 Jan 1978