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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 2/3
PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON CIVIL AND STRUCTURAL ENGINEERING COMPUTING
Edited by: B.H.V. Topping
Paper XXI.1

Optimum Aseismic Design using Fuzzy Sets and Empirical Connectives

H. Futura*, K. Furukawa+, N. Ahirashi* and J.T.P. Yao#

*Department of Civil Engineering, Kyoto University, Japan
+Yamaguchi University, Japan
#Department of Civil Engineering, Purdue University, USA

Full Bibliographic Reference for this paper
H. Futura, K. Furukawa, N. Ahirashi, J.T.P. Yao, "Optimum Aseismic Design using Fuzzy Sets and Empirical Connectives", in B.H.V. Topping, (Editor), "Proceedings of the Second International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 173-178, 1985. doi:10.4203/ccp.2.21.1
Abstract
In this paper, an attempt is made to formulate the optimum design of earthquake-resistant structures using the concept of fuzzy mathematical programming. By using the fuzzy mathematical programming, it is possible to deal with each design requirement as an objective function. In addition, it enables us to consider various types of uncertainties or ambiguities in a unified manner.

While the fuzzy mathematical programming can be extensively applied in any decision problem, it is necessary to consider carefully the aggregation of contradictory components for practical purposes. To find an adequate way of aggregating objective functions, we conducted a survey, during which several sets of questionnaires were distributed among experienced engineers to find their preference in the design of earthquake-resistant structures.

Results of these questionnaires are collected and analyzed by using the pairwise method. By using several numerical examples, the present method is illustrated and compared with the previous results using the minimum operator.

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