Optimizing the Design of High-Rise Steel Buildings

by Ali A. K. Haris, Moore & Assoc Inc, United States,



Document Type: Proceeding Paper

Part of: Computer Utilization in Structural Engineering

Abstract:

The approximate stiffness method is utilized for a proposed procedure to evaluate the stiffness of the various frames and the stiffness of the members within the frames to provide a drift-controlled building design with a minimum amount of steel. The procedure is applicable to steel buildings with rigid frames, braced frames, or a combined system. The displacement results at each floor from the approximate lateral load analysis are x-displacement, y-displacement, and the twisting displacement. Secondary effects due to P-delta are also included in the analysis. The optimization study provides the results of the efficiency of frames and members in drift control. Based on these efficiency results, the member's weight can be adjusted to provide maximum building stiffness with a minimum steel weight.

Subject Headings: Steel frames | Building design | Steel structures | Stiffening | Structural design | Lateral loads | Dynamic structural analysis

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