Abstract
The embedded steel plate cellular bulkhead has been developed as a new type of sea wall which is applicable even for poor sea beds and deep water sites. As the sea wall is a widely extended and huge structure, economical construction is needed. In this study, the optimization technique was applied for the minimization of the total construction cost of the embedded steel plate cellular bulkheads including the ground improvement cost. This technique was applied also for the clarification of the relationship between the design factors and the constraints. Through the numerical computation, the optimum cross sections of the embedded steel plate cellular bulkhead and the optimum area of ground improvement were obtainedd and the useful informations for the optimum design of this structure were provided.
