A timber lattice roof, which has around 30m span, was constructed. In order to figure out the realistic buckling load level, the structural analysis of this roof structure was performed especially by stiffness of connection with various asymmetric snow load. Due to the characteristics of application of snow load, the load combinations of snow should be considered not only global area but also local part so that the critical buckling load could be observed as easy as possible. Geometrical imperfection was simulated to consider inaccurate shape of structure. And then nonlinear analysis were performed. Finally, this paper could investigate that the asymmetric snow load with the lower level stiffness of connection decreased the level of buckling load significantly.

Abstract
1. 서론
2. 목조 래티스 지붕의 구성
3. 수치해석 개요
    3.1 비대칭 적설하중의 해석 가정
    3.2 다양한 접합부 강성의 해석 가정
4. 수치해석 결과
    4.1 완전형상을 고려한 해석 결과
    4.2 초기형상불완전을 고려한 해석 결과
    4.3 접합부의 다양한 강성을 고려한 해석 결과
5. 결론
감사의 글
References

• 황경주(서울시립대학교 건축학부 교수, 공학박사) | Hwang, Kyung-Ju (School of Arch. University of Seoul)