The BX composite beam is designed to have the same cross-section regardless of the size of the momentum, which is a disadvantage of the existing steel structure. Combination of the H-beam end compressive material and the H-section steel tensile reinforcement according to the moment size in a single span, It is possible to say that it is an excellent synthesis which increases the performance. When underground and overhead structures are constructed, it is possible to reduce the bending, increase lateral stiffness, reduce construction cost, and simplify joints. The seamability of the joining part is a simple steel composite beam because of the decrease of the beam damping at the center of the beam and the use of the end plate of the new end compressing material. In the case of structures with long span structure and high load, it is advantageous to reduce the material cost by designing large steel which is high in price at less than medium steel.

Abstract
 1. 서론
 2. BX 합성보의 특성 분석
  2.1 부재 특성
  2.2 BX 합성보의 설계 방법
 3. BX 합성보의 실험
  3.1 실험체 계획
  3.2 실험체 제작
  3.3 실험 결과
 4. 물류 창고 적용 사례 분석
 5. 결론
 References

• 오중근(건국대학교 건축학과) | Oh Jung-Keun (College of Architecture, Konkuk University) 교신저자
• 심남주((주)하이브릭스이앤씨) | Shim Nam-Ju (Hybrix E&C, Precast Concrete Team)