[논문]지반 구조 상호작용을 고려한 교량 시뮬레이션 시스템

김익환; 한봉구

지반 구조 상호작용을 고려한 교량 시뮬레이션 시스템
Bridge Simulation System with Soil-Foundation-Structure Interaction 원문보기

구조물진단학회지 = Journal of the Korea Institute for Structural Maintenance Inspection, v.12 no.4 = no.50, 2008년, pp.168 - 178

김익환 (서울산업대학교 건설공학부) , 한봉구 (서울산업대학교 건설공학부)

초록
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하이브리드 시뮬레이션 실험방법은 단일실험모드하의 물리적 또는 수치해석적 시뮬레이션에 의하여 지진발생시 구조물을 평가하는 다양한 기술 중에 하나이다. 본 논문에서는 지진하중하의 교량구조 시스템의 해석과 실험을 위해서 계산과 실험 시뮬레이션을 통합한 소프트웨어체제를 개발하였다. 개발한 하이브리드시뮬레이션 소프트웨어체제를 이용하여 대규모 네트워크로 분산된 실험 또는 전산장비에 참여하고 있는 교량구조시스템에 대한 지진응답을 평가할 수 있었다. 본 논문에서는 적용 예를 통하여 지반 구조 상호작용을 고려한 교량의 시뮬레이션 해석방법을 제시하였다.

Abstract ▼ AI-Helper

The hybrid simulation test method is a versatile technique for evaluating the seismic performance of structures by seamlessly integrating both physical and numerical simulations of substructures into a single test mode. In this paper, a software framework that integrates computational and experimental simulation has been developed to simulate and test a bridge structural system under earthquake loading. Using hybrid simulation, the seismic response of complex bridge structural systems partitioned into multiple large-scale experimental and computational substructures at networked distributed experimental and computational facilities can be evaluated. In this paper, the examples of application are presented in terms of a bridge model with soil-foundation-structure interaction.

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문제 정의

The purpose of this simulation is to test the capabilities of the integrated computational and experimental simulation controller for soil-foundation-structure interaction problems. A hypothetical two-span bridge with approach embankments is developed for virtual pseudodynamic simulation.

제안 방법

In this previous application, the emphasis of NTCP was on security and safe control of remote experimental equipment. In order to increase the rates of testing for Fast-MOST, three key enhancements were incorporated into NTCP: (1) modification of NTCP to minimize network transactions in each simulation step; (2) implementation of a Javabased multithreaded simulation coordinator to carry out transactions in parallel with multiple remote sites; and (3) implementation of an event-driven controller at remote experimental sites that generate a continuous load history for the experimental substructures. It should be noted that in modifying the original NTCP, control and security features had to be relaxed.
systems. The objectives of the distributed control strategy presented here are: To provide a scalable framework for multiple substructure testing at distributed sites; Improve the reliability of the test results by minimizing strain rate and force relaxation errors in the remote experimental substructures; and increase the speed of testing as allowed by network communication time. The control strategy is based on a multithreaded simulation coordinator combined with an event-driven controller at the remote experimental sites.
Lehigh University. This combined effort known as fast multisite on-line simulation test (Fast MOST), was targeted at introducing features into NEESgrid that allow for faster rates of testing and improved reliability of the simulation results. Building on the original MOST (Spencer et al.
This study focuses primarily on displacement- controlled pseudo-dynamic hybrid simulations, in which displacements computed using the numerical model are applied to the physical specimen, and the resisting forces are measured and feedback into the numerical model. The nature of physical experiments normally results in small but influential differences between the desired and achieved displacement histories.

성능/효과

The accurate results from distributed simulations, compared to a single mode analysis, confirm that the system is fully-functional and is capable of running any number of experimental and analytical components.

참고문헌 (20)

Broderick, B. M. and Elnashai, A. S., "Analysis of the failure of Interstate 10 freeway ramp during", the Northridge earthquake of 17 January 1994 Earthquake Engineering and Structural Dynamics 24, 1995, pp. 189-208

상세보기
Chen C., Ricles JM., "Effective force testing method using virtual mass for real-time earthquake simulation", Proc. of the 8th National Conference on Earthquake Engineering, San Francisco, CA, 2006
Elnashai A., Spencer B. F., Kuchma D., Hashash Y., Ghaboussi J. and Gan G., "Multi-axial full-scale sub-structured testing and simulation (MUST-SIM) facility at the University of Illinois at Urbana-Champaign", 13th World Conference on Earthquake Engineering, Vancouver, Canada, 2004
Horiuchi T., Inoue M., Konno T., Namita Y., "Real-time hybrid experimental system with actuator delay compensation and its application to a piping system with energy absorber", Earthquake Engineering and Structural Dynamics 28(10), 1999, pp.1121-1141

상세보기
Mahin, S. A. and Shing, P. B., "Pseudodynamic Method for Seismic Testing", Journal of Structural Engineering ; 111(7):, 1985, pp. 1482-1503

상세보기
Mahin, S. A., Shing, P. B., Thewalt, C. R., and Hanson, R. D., "Pseudodynamic test method-Current status and future direction", Journal of Structural Engineering; 115(8), 1989, pp. 2113-2128

상세보기
Magonette, G., "Development and application of large-scale continuous pseudodynamic testing techniques", Philos. Trans. R. Soc. London, 359, 2001, pp. 1771-1799

상세보기
Magonette, G. and Negro, P., "Verification of the pseudodynamic test method", Eur. Earthquake Eng., XII(I), 1998, pp. 40-50
Nakashima M., Kato H., Takaoka E., "Development of real-time pseudo-dynamic testing". Earthquake Engineering and Structural Dynamics 21(1), 1992, pp. 79-92

상세보기
Nakashima, M., Kaminosono, T., Ishida, M. and Ando, K., "Integration techniques for substructure pseudo dynamic test", 4th U.S. national conference on earthquake engineering, CA, Palm Springs, 1990, pp. 515-524
Pan, P., Tada, M. and Nakashima, M. "Online hybrid test by internet linkage of distributed test-analysis domains." Earthquake Eng. Struct. Dyn., 34(11), 2005, pp. 1407-1425

상세보기
Pearlman, L., D'Arcy, M., Johnson, E., Kesselman, C., and Plaszczak, P., "NEESgrid teleoperation control protocol", Technical Rep No. NEESgrid-2003-07, NEESgrid, 2003
Shing, P.B. and Mahin, S.A., "Computational Aspects of a Seismic Performance Test Method using On-line Computer Control", Earthquake Engineering and Structural Dynamics 13, 1985, pp. 507-526

상세보기
Spencer, B., Elnashai, A., Kuchma, D. and Abrams, D., "The MOST experiment: Earthquake engineering on the grid", Technical Rep. No. NEESgrid-2004-26, NEESgrid, 2004
Stojadinovic, B., Mosqueda, G., and Mahin, S. A., "Event-driven control system for geographically distributed hybrid simulation", J. Struct. Eng., 132(1), 2006, pp. 68-77

상세보기
Takanashi, K., Udagawa, K., Seki, M., Okada, T. and Tanaka, H., "Nonlinear earthquake response analysis of structures by a computeractuator on-line system (details of the system)", Trans. of the Architectural Institute of Japan, 229, 1975, pp. 77-83
Takanashi, K. and Nakashima, M., "Japanese activities on on-line testing", J. Eng. Mech., 113(7), 1987, pp. 1014-1032

상세보기
Takahashi, Y. and Fences, G. L., "Software framework for distributed experimental- computational simulation of structural systems", Earthquake Eng. Struct. Dyn., 35(3), 2006, pp. 267-291

상세보기
Wang, K. J., Lin, B. Z., Cheng, W. C., Wang, S. J., Yang, Y. S. and Tsai, K. C., "A platform for networked collaborative structural experiments", Proc., 1st Int. Conf. on Advanced in Experimental Structural Engineering, Nagoya, Japan, 2005
Watanabe, E., Kitada, T., Kunitomo, S. and Nagata, K., "Parallel pseudodynamic seismic loading test on elevated bridge system through the Internet", Proc., 8thEast Asia- Pacific Conf. on Structural Engineering and Construction, Singapore, 2001

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지반 구조 상호작용을 고려한 교량 시뮬레이션 시스템
Bridge Simulation System with Soil-Foundation-Structure Interaction 원문보기

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지반 구조 상호작용을 고려한 교량 시뮬레이션 시스템 Bridge Simulation System with Soil-Foundation-Structure Interaction 원문보기

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지반 구조 상호작용을 고려한 교량 시뮬레이션 시스템
Bridge Simulation System with Soil-Foundation-Structure Interaction 원문보기

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