RBS-B 접합부 설계식 개선에 따른 철골모멘트골조 시스템의 내진성능평가
Seismic Performance Evaluation of Steel Moment Resisting Frame Systems According to an Improved Design Method of RBS-B Connections
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현행 내진설계기준에서 RBS-B 접합부는 오직 중간모켄트골조(IMF) 시스템에서만 사용이 허용된다. 본 연구는 현행설계규준에 따라 설계한 RBS-B 접합부를 갖는 철골 모멘트골조 시스템의 내진성능평가를 수행하였다. 이를 위하여 층수(3층, 6층, 9층), 경간너비(6m, 9m), 내진설계범주(SDC Cmax, SDC Cmin)으로 구성된 12개의 RBS-B접합부를 갖는 철골모멘트골조 건물을 설계하였고 RBS-B 접합부의 비선형 이력거동을 잘 모사하는 접합부 모델을 개발하였다. 설계된 대상골조는 ATC-63에 의해 개발된 내진성능평가 방법에 따라 내진성능평가를 수행하였다. 또한 본 연구는 저자가 이전연구에서 제안한 새로운 설계법에 따라 설계된 IMF 시스템의 내진성능평가를 수행하였다. 그 결과 현행규준에 따라 설계한 몇 개의 대상골조가 적절한 붕괴여유비를 보유하지 못하였다. 반면에 새로운 설계절차에 따라 설계된 대상골조는 적절한 붕괴여유비를 보유하였다.
Abstract
In current seismic design provisions, a reduced beam section with bolted web (RBS-B) connections is only permitted for intermediate moment frames (IMF). This study evaluated the seismic performance of steel moment resisting frame systems having RBS-B connections designed according to current seismic design provisions. For this purpose, 12 archetypal IMF systems having two different span lengths (9m, 6m) were designed considering two design load levels (SDC Cmax, SDC Cmin). A nonlinear analytical model that can simulate hysteretic behavior of an RBS-B connection was also developed in this study. The procedures specified in ATC 63 are used to conduct a seismic performance evaluation. Moreover, this study conducts the seismic performance evaluation of IMF systems designed according to a new design method proposed by the authors in the previous study. It was observed that several model frames designed according to current seismic design provisions did not provide satisfactory collapse margin ratios (ACMR). This study also showed that the model frames designed according to the new design procedures had a sufficient ACMR.
참고문헌 (17)
- Recommended seismic design criteria for new steel moment frame buildings, "FEMA", Federal Emergency Management Agency, ~, pp.FEMA 350 (2000)
- Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications, "AISC", American Institute of Steel Construction Inc. (AISC), ~, pp.ANSI (2005), AISC 358
- Han, S.W, "Design equations for moment strength of RBS-B connections", Journal of Constructional Steel Research, 65, pp.1087~1095 (2009)
- 문기훈, "웨브를 볼트 접합한 보 플랜지 절취형 접합부의 회전능력평가", 대한건축학회논문집 구조계, 25(11), pp.71~78 (2009), 대한건축학회
- 한상환, "IMF 시스템에 적용하기 위한 RBS-B 접합부의 설계기준 제시", 대한건축학회논문집 구조계, 25(11), pp.79~86 (2009), 대한건축학회
- Quantification of building seismic performance factors, "ATC", Applied Technology Council, ~, pp.ATC-63 (2005)
- AISC 341), "Seismic provisions for structural steel buildings including Supplement No. 1. (ANSI", pp.2005, AISC
- Seismic demands for performance evaluation of steel moment resisting frame structures (SAC Task 5.4.3), "Gupta, A", John A. Blume Earthquake Engineering Research Center, Stanford University, ~, pp.Rep. No. 132 (1999)
- Global collapse of frame structures under seismic excitations, "Ibarra,L.F", John A. Blume Earthquake Engineering Center, ~, pp.Rep. No. 152 (2005)
- Lignos,D, "Sidesway collapse of deteriorating structural systems under seismic excitations", 박사, pp.2008
- Tremblay, R, "Seismic performance of RBS connections for steel moment resisting frames: Influence of loading rate and floor slab", Proceedings STESSA ’97, pp.1~7 (1997)
- Lee, C.-H, "Effects of Panel Zone Strength and Beam Web Connection Method on Seismic Performance of Reduced Beam Section Steel Moment Connections", Journal of Structural Engineering, 131(12), pp.1854~1865 (2005)
- SEI 7-05), "Minimum design loads for buildings and other structures. (ASCE", pp.2005, ASCE
- Seismic performance, capacity and reliability of structures as seen through incremental dynamic analysis, "Vamvatsikos, D", Blume Earthquake Engineering Center, ~, pp.Rep. No. 151 (2005)
- "OpenSees command language manual" (2007)[URL]
- Luco, N, "Effects of connection fractures on SMRF Seismic drift demands", Journal of Structural Engineering, 126(1), pp.127~136 (2000)
- Roeder,C.W, "State of the Art Report on Connection Performance" (2000), SAC Joint Venture