Although steel has high strength compare to concrete as structural material, usage of it decrease because of its cost. Steel, however, is not only easy to manufacture but also convenient for manufacture. Using these advantages of steel, it is possible to reduce the cost of construction, The steel bridge can be constructed by modular system. In this study, structural analysis is performed to estimate section strength of steel box girder which is made by the method of fold.

• 이기세(고려대학교 건축사회한경공학부 박사과정) | Lee, Kee Sei
• 조시영(고려대학교 건축사회환경공학부 석사과정) | Cho, Si Young
• 원덕희(고려대학교 건축사회환경공학부 연구교수) | Won, Deok Hee
• 강영종(고려대학교 건축사회환경공학부 교수) | Kang, Young Jong