Abstract
New cable tension adjustment method has been developed by introducing the concept of satisfaction to reduce the weight of cable-stayed bridges. The degree of satisfaction is defined in such a way that when the aspire of a designer is completely achieved, the satisfaction degree is one, and when the aspire is not achieved at all, the satisfaction degree is zero. Evidently, because the satisfaction is related to engineering knowledge and judgement, the proposed method can provide us with more practical solutions. In order to treat the satisfaction in the formulation, fuzzy mathematical programming is employed, in which the satisfaction degree is related to the determination of the membership functions for the designer's allowable demand range. Practical applications of realized models and existing cable-stayed bridges show the efficiency and usefulness of the method developed here.
