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|Optimization design of tall buildings under multiple design criteria
|International Journal of Applied Mathematics and Mechanics, 2005; 1(4):35-48
|GBS Publishers & Distributors
|C. T. Ng and H. F. Lam
|Due to the complexity of modern tall building structures, structural design following the traditional trial-and-error approach makes the design process extremely time-consuming and the resultant design uneconomic. This paper studies the feasibility in formulating the structural design problem as a minimization problem and solving it by numerical optimization algorithms. With the help of the numerical optimization algorithms, the trial-and-error design process can be carried out in a systematic and, even more important, automatic manner. In this study, the design process is formulated as the minimization of the total weight of the building under a series of constraints, which are designed to consider different design criteria. The considered design criteria include the strength, top and inter-storey drifts, frequency, and stability requirements specified in the British Standard and code of practice in Hong Kong. A large-scale building example is employed in the case study to illustrate the structural optimization design approach. The results of case study show that the structural optimization design approach provides a valuable tool for engineers to obtain a feasible and economical design even when the initial design violates some of the design criteria.
Numerical optimization algorithm
|Copyright status unknown
|Appears in Collections:
|Aurora harvest 5
Civil and Environmental Engineering publications
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