The demand for the structural system of reduction of story height increases because buildings are getting higher. The existing structural systems are not efficiency. Thus, it is hard to reduce the story height and existing methods cannot secure economics as expected. This study aims at developing the partially concrete-filled new type composite beam, which can efficiently resist against the end negative moment and central positive moment, also reduce deflection of beams. Through case studies on loading of concentrated load and uniformly distributed load to fixed beam, we could find the most efficient ratio of moment of inertia and the ratio (end beam length to span). The gap space between middle and end beam can be used as facilities installation, consequently the suggested Omega beam system is expected to get the effect of reduction in story height as well as reduction of quantity.

1. INTRODUCTION
2. Optimum Design of OMB
3. Performance Evaluation
4. CONCLUSIONS
References

• 윤명호(공주대학교 건축공학과 교수) | Yoon, Myung-Ho Corresponding author
• 이윤희(공주대학교 건축공학과 박사과정) | Lee, Yoon-Hee
• 이예슬(공주대학교 건축공학과 석사과정) | Lee, Ye-Seul