Multi-level Optimization using Reduced Basis Technique for Prestressed Concrete Box Girders

기저함수 감소기법을 이용한 프리스트레스트 콘크리트 박스거더의 다단계 최적설계

A multi-level optimum design algorithm for prestressed concrete (PSC) box girders is proposed in this paper. To save the numerical efforts, a multi-level optimization technique using model coordination method that separately utilizes both tendon profile design and section design is incorporated. And also, a reduced basis technique for the efficient tendon profile optimization is proposed in this paper. From the numerical investigations, it may be positively stated that the optimum design of PSC box girder based on the new approach proposed in this study will lead to more rational and economical design compared with the currently available designs.