철골모멘트골조의 보-힌지 붕괴모드를 유도하는 유전자알고리즘 기반 최적내진설계기법

국문 초록 (Abstract)

본 연구에서는 철골모멘트골조의 보-힌지 붕괴모드를 유도하는 최적 내진설계기법을 제안한다. 이는 유전자알고리즘을 사용하며, 기둥의 소성힌지 발생을 억제하는 제약조건을 설정하여 보-힌지 붕괴모드를 유도한다. 제안하는 기법은 구조물량를 최소화하고 에너지소산능력을 최대화하는 목적함수를 사용한다. 제안하는 기법은 9층 철골모멘트골조 예제 적용을 통해 검증한다. 예제 적용을 통해 철골모멘트골조의 보-힌지 붕괴모드를 유도하기 위해 요구되는 기둥-보 강도비를 평가한다. 패널존에 대한 3가지 모델링 기법을 각각 적용하여 모델링 조건에 따른 휨강도비 영향이 추가적으로 검토된다.

다국어 초록 (Multilingual Abstract)

In this paper, the optimal seismic design method for inducing the beam-hinge collapse mechanism of steel moment frames is presented. This uses the non-dominated sorting genetic algorithm II(NSGA-II) as an optimal algorithm. The constraint condition for preventing the occurrence of plastic hinges at columns is used to induce the beam-hinge collapse mechanism. This method uses two objective functions to minimize the structural weight and maximize the dissipated energy. The proposed method is verified by the application to nine story steel moment frame example. The minimum column-to-beam strength ratio to induce the beam-hinge collapse mechanism are investigated based on the simulation results. To identify the influence of panel zone on the minimum column-to-beam strength ratio, three analytic modeling methods(nonlinear centerline model without rigid end offsets, nonlinear centerline model with rigid end offsets, nonlinear model with panel zones) are used.

참고문헌 (Reference)

1 최세운, "역V형 특수중심가새골조의 최적내진설계 모델 개발" 한국전산구조공학회 23 (23): 111-120, 2010

2 오병관, "변형 유전 알고리즘을 이용한 건물 철골 보 구조물의 시스템 식별에 관한 해석적 연구" 한국전산구조공학회 27 (27): 231-238, 2014

3 Medina, R.A., "Strength Demand Issues Relevant for the Seismic Design of Moment-resisting Frames" 21 : 415-439, 2005

4 AISC, "Seismic Provisions for Structural Steel Buildings(ANSI/AISC 341-05), Chicago(IL): American Institute of Steel Construction"

5 Dooley, L., "Seismic Evaluation of Column-to-Beam Strength Ratios in Reinforced Concrete Frames" 98 : 834-851, 2001

6 Gupta A., "Seismic Demands for Performance Evaluation of Steel Moment Resisting Frame Structures. The John A" Engineering Center 1999

7 Lee, H., "Revised Rule for Concepts of Strong-Column Weak-Girder Design" 122 : 359-364, 1996

8 Park, R., "Reinforced Concrete Structure" John Wiley and Sons 1975

9 Kuntz, G. L., "Reduction of Column Yielding during Earthquakes for Reinforced Concrete Frames" 100 : 573-580, 2003

10 Hasan, R., "Push-over Analysis for Performance-based Seismic Design" 80 : 2483-2493, 2002

11 Choi, S. W., "Multi-objective Seismic Design Method for Ensuring Beam-hinging Mechanism in Steel Frames" 74 : 17-25, 2012

12 Foutch, D.A., "Modeling of Steel Moment Frames for Seismic Loads" 58 : 529-564, 2002

13 "FEMA 356 Prestandard and Commentary for the Seismic Rehabilitation of Buildings"

14 "FEMA 355C State of the Art Report on Systems Performance of Steel Moment Frames Subject to Earthquake Ground Shaking" Federal Emergency Management Agency 2000

15 Krawinkler, H., "Effects of Panelzone Deformations on Seismic Response" 8 : 233-250, 1987

16 Bruneau, M., "Ductile Design of Steel Structures" McGraw-Hill 1997

17 Nakashima, M., "Column-to-Beam Strength Ratio Requied for Ensuring Beam-Collapse Mechanisms in Earthquake Responses of Steel Moment Frames" 2000

18 "ASCE 7-05 Minimum Design Loads for Buildings and other Structures, SEI/ASCE Standard No.7-05"

19 AISC, "ANSI/AISC 360-05 Specification for Structural Steel Buildings, American Institute of Steel Construction"

20 "ACI Committee 318 Building Code Requirements for Structural Concrete(ACI 318-05) and Commentary(ACI 318R-05)"

21 Deb, K., "A Fast and Elitist Multiobjective Genetic Algorithm: NSGA-II" 6 : 182-197, 2002