다하중 경우를 고려한 철근콘크리트 구조물의 스트럿-타이 모델

Abstract

This paper provides optimal strut-tie models (STM) of reinforced concrete (RC) structures produced by using topology optimization (TO) technique with multi-load case. The STM approach has been widely used to design the so-called D-region of RC structures where strain distributions appear to be highly nonlinear. However the conventional STM design approach requires the intuition and experiences of structural engineers to produce a proper design for D-region especially in case of complex geometries or/and load conditions. TO techniques were then introduced to make the design process easier. But most cases have been dealt with single-load case although the multi-load case should be considered for the STM design in engineering practice. Therefore, TO technique with the multi-load case is introduced to deal with the STM design of RC structures. From numerical results, it is found to be that the TO technique with multi-load case can produce new layouts of STM and they can be effectively used for the design of STM of RC structures.