철근콘크리트 유공보의 위상최적화

Abstract

Topology optimization of reinforced concrete (RC) beams with openings is carried out to produce some basic information for reinforcement layout design. Various types of openings are introduced into the reinforced concrete beam. The size, location and shape of opening is mainly used in topology optimization as important parameters effecting on the material redistribution, which could be used as a new information to design the reinforcement layout of the beam with openings. For this purpose, the isogeometric concept is adopted to perform topology optimization since it uses an exact geometric definition for both structural geometry and analysis. Multi-patch definition is introduced for the implementation of the opening inside beam geometry. In addition, the h-refinement technique is used to produce the mesh for the analysis. Four numerical examples are tackled to investigate the effect of openings on the optimum topology. From numerical result, it is turned out to be that the size, location and shape of opening are crucial in final optimum topology. Finally, the present results can be conceptually used in the reinforcement layout design of beam with openings