Abstract
The paper deals with a method for the optimum design of prestressing tendons in continuous beams subjected to many load states. The minimum volume of prestressing steel has been assumed as the optimization criterion. Many possible paths of prestressing tendons allowable from the structural point of view have been taken into consideration. The authors have investigated the number of cables in individual paths in order to obtain the minimum value of the objective function. The linear integer optimization method has been used for finding the optimum layout of tendon paths. Use has been made of the IBM mathematical programming system extended procedure package. Theoretical considerations are accompanied by a numerical example.
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