고정반복법에 의한 암시적 HHT 시간적분법을 이용한 철근콘크리트 골조구조물의 실시간 하이브리드실험
Real-Time Hybrid Testing Using a Fixed Iteration Implicit HHT Time Integration Method for a Reinforced Concrete Frame
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고정반복법에 의한 암시적 HHT 시간적분법을 이용하여 3층 3경간 철근콘크리트 골조구조물을 수치해석모형과 물리적 부분구조모형으로 나누어 실시간 하이브리드실험을 실시하였다. 물리적 부분구조모형으로는 1층 내부 비연성기둥 1개소가 선택되었고, 수치해석모형에 일축 방향의 지진하중을 시편이 심한 손상에 의하여 파괴에 이를 때까지 작용시켰다. 비선형 유한요소해석 프로그램인 Mercury가 실시간 하이브리드실험을 위하여 새로이 개발 및 적용되었다. 실험결과는 물리적 부분구조모형의 상부 수평방향 층간변위비를 OpenSees에 의한 수치해석시뮬레이션과 진동대실험의 그것과 비교하였다. 본 실험은 가장 복잡한 실시간 하이브리드실험 중의 하나이고, 하드웨어, 알고리즘 그리고 모형에 대한 기술적인 내용을 본 논문에 자세히 설명하였다. 수치해석모형의 개선, 물리적 부분구조 모형 접선강성행렬의 유한요소해석 프로그램에서의 평가 그리고 하중기반 보-요소의 요소상태결정의 연산시간을 줄이기 위한 소프트웨어의 개선이 이루어진다면 실시간 하이브리드실험과 진동대실험결과의 비교는 권장할 만하다. 그리고 “지진과 같은 동적하중하의 복잡한 구조물의 수치해석시뮬레이션”이라는 목적을 위하여 실시간 하이브리드실험은 동적하중에 대한 실험적 검증을 점진적으로 수치해석모형으로 대체하기 위한 저비용-고효율 실험법으로서의 가치를 충분히 가지고 있다고 할 수 있다.
Abstract
A real-time hybrid test of a 3 story-3 bay reinforced concrete frame which is divided into numerical and physical substructure models under uniaxial earthquake excitation was run using a fixed iteration implicit HHT time integration method. The first story inner non-ductile column was selected as the physical substructure model, and uniaxial earthquake excitation was applied to the numerical model until the specimen failed due to severe damage. A finite-element analysis program, Mercury, was newly developed and optimized for a real-time hybrid test. The drift ratio based on the top horizontal displacement of the physical substructure model was compared with the result of a numerical simulation by OpenSees and the result of a shaking table test. The experiment in this paper is one of the most complex real-time hybrid tests, and the description of the hardware, algorithm and models is presented in detail. If there is an improvement in the numerical model, the evaluation of the tangent stiffness matrix of the physical substructure model in the finite element analysis program and better software to reduce the computational time of the element state determination for the force-based beam-column element, then the comparison with the results of the real-time hybrid test and the shaking table test deserves to make a recommendation. In addition, for the goal of a “Numerical simulation of the complex structures under dynamic loading”, the real time hybrid test has enough merit as an alternative to dynamic experiments of large and complex structures.
참고문헌 (27)
- Takanashi, K., "Non-linear earthquake response analysis of structures by a computer-actuator online system - Part 1: detail of the system", Transactions of the Architectural Institute of Japan, (229), pp.77~83 (1975)
- National Research Council, "Preventing Earthquake Disaster; The Grand Challenge in Earthquake Engineering; A Research Agenda for the Network for Earthquake Engineering Simulation(NEES)" (2003), The National Academics Press
- User manual and examples for ui-simcor v2.6 multi-site substructure pseudo-dynamic simulation coordinator, "Kwon, O.", University of Illinois, ~ (2007)
- Schellenberg, A., "Environment independent implementation of a software framework for fast local and geographically distributed hybrid simulations", The 14th World Conference on Earthquake Engineering (2008)
- Evaluation of openfresco and simcor for fast hybrid single site simulation, "Haussmann, G.", Fast Hybrid Testing Laboratory, University of Colorado, ~, pp.CU-NEES-07-02 (2007)
- 이성경, "진동대를 이용한 구조물의 하이브리드 실험", 대한건축학회논문집 구조계, 22(5), pp.57~63 (2006), 대한건축학회
- 박은천, "대형 MR감쇠기가 설치된 건축구조물의 실시간 하이브리드 실험 및 준능동 알고리즘 적용", 한국전산구조공학회논문집, 21(5), pp.465~474 (2008), 한국전산구조공학회
- 이강석, "유사동적실험을 이용한 철근콘크리트 단주실험에 관한 연구", 한국콘크리트학회 가을학술발표대회, pp.73~76 (2008), 한국한국콘크리트학회
- 실시간 하이브리드 다자유도 구조시스템 실험시설 최종보고서, "명지대학교 산학협력단", 국토해양부, 한국건설교통기술평가원, ~ (2009)
- 조성민, "소형선형 평면뼈대모형의 진동대실험을 통한하이브리드실험 기법의 검증", 한국지진공학회논문집, 14(6), pp.33~43 (2010), 한국지진공학회
- Shing P., "Integration schemes for real‐time hybrid testing, In Hybrid Simulation: Theory, Implementation and Applications" (2008)
- Open system for earthquake engineering simulation (opensees), "McKenna, F.", Pacific Earthquake Engineering Research Center, University of California, ~ (2004)
- Karavasilis, T., "Use of Real-Time Hybrid Simulation to Evaluate the Performance-Based Seismic Design of Steel MRFS with Compressed Elastomer Dampers", Proceedings of the 2010 Structures Congress (2010)
- Fast hybrid testing at CU NEES. Benchmark Tests, "Stauffer, E.", Fast Hybrid Testing Laboratory, University of Colorado, ~, pp.CU-NEES-07-19 (2007)
- Saouma, V., "A Computational Finite-Element-Program for Hybrid Simulation", Earthquake Engineering and Structural Dynamics (2011), Published online in Wiely Online Library[DOI]
- Yassin, M. H. M., "Nonlinear analysis of prestressed concrete structures under monotonic and cyclic loads", 박사, pp.1994
- Ragueneau, F., "Anisotropic damage for concrete within multifibre beam finite element theory", First European Conference on Earthquake Engineering and Seismology (2006)
- Unrealized potential: The socio-technical challenges of a large scale cyberinfrastructure initiative. Technical Report, "Faniel, I.", School of Information, University of Michigan, ~ (2009)
- Ghannoum, W. M., "xperimental and Analytical Dynamic Collapse Study of a Reinforced Concrete Frame with Light Transverse Reinforcement", 박사, pp.2007
- Kang, D.H., "An Optimized Computational Environment For Real-Time Hybrid Simulation", 박사, pp.2010
- Coleman, J., "Localization Issues in Force-Based Frame Elements", Journal of Structural Engineering, 127(11), pp.1257~1265 (2001)
- Shing, P., "NEES Fast Hybrid Test System at the University of Colorado", 13th World Conference on Earthquake Engineering (2004)
- Generalized hybrid simulation framework for structural systems subjected to seismic loading, "Elkhoraibi, T.", Pacific Earthquake Engineering Research Center, ~, pp.Technical Report 2007 (2007), 101
- Ghannoum, W., "Loading rate effects in reinforced concrete columns", Tentatively Accepted ASCE J. of Structural Engineering (2010)
- Nakashima, M., "Real-time on-line test for mdof systems", Earthquake Engineering and Structural Dynamics, 28, pp.393~420 (1999)
- Hilber, H., "Improved numerical dissipation for time integration algorithms in structural dynamics", Earthquake Engineering and Structural Dynamics, 5, pp.283~292 (1977)
- Using the unscented kalman filter in fast hybrid testing, "Haussmann, G.", Fast Hybrid Testing Laboratory, University of Colorado, ~, pp.Technical Report CU-NEES-09-01 (2009)