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Automated Design of Earthquake Resistant Multistory Steel Building Frames.
Walker, N. D.
National Science Foundation, Washington, D.C., May 1977, 184 p.
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This report presents a methodology for automating the design process for earthquake-resistant multistory steel building frames. The design process is viewed as a complex collection of interrelated decision processes, the conduct of which requires specification of the motivation for making the decisions and identification of the decision constraints. Total cost, including both construction-related expenses as well as cost of expected future damage, is adopted as the basic decision motivator. Decision constraints are composed essentially of standard and projected building code restrictions. The design process as a whole is explored first, followed by a detailed investigation of the 'frame-sizing' portion of this process. Static loading, in the form of dead/live load on the beams, and earthquake generated horizontal ground motion are considered in evaluating structural system response. Linear and approximate nonlinear analyses are employed. Expressions describing the frame-sizing process are introduced. In addition an automating algorithm is presented. These procedures are then employed on two example problems which serve to develop insight into the design philosophy under study and into the operating characteristics of the proposed automated design procedure. (Portions of this document are not fully legible)
Damage assessment; Static loads; Earthquake resistant structures; Computer programs; Construction costs; Computer applications; Automation; Design criteria; Dynamic loads; Multistory buildings; Design; Computer aided design