Middle size of membrane retractable roof is under 25m span which consists of various moving systems. Trolley is the system that leads the membrane to parking place, transferring the load from the membrane to structural cable. When membrane closes roof completely, thus, structural behavior of trolley, which may contain various material with different friction coefficients, should be investigated by vertical load. Nummerical simulation of trolley prototypes, in this research, was performed by incrementation of vertical load. Consequently, this paper studied proper friction characteristics and provided the effective inner materials of trolley.

1. 서론
 2. 트롤리 프로토타입의 디테일
 3. 수치해석 개요
 4. 수치해석 결과
  4.1 다양한 구조적 물성치를 고려한 결과
  4.2 다양한 재료적 마찰계수를 고려한 해석결과
 5. 결론
 References

• 김윤진(한국기술교육대학교 건축공학부 연구원, 공학석사) | Kim Yun-Jin
• 이승재(정회원, 한국기술교육대학교 건축공학부 교수, 공학박사) | Lee Seung-Jae
• 이유한(서울시립대학교 건축학부, 석사과정) | Lee Yu-Han
• 황경주(정회원, 서울시립대학교 건축학부 부교수, 공학박사) | Hwang Kyung-Ju 교신저자