가속도계를 이용한 사장교의 지진거동 계측시스템 개발에 대한 연구
A Study on the Development of a Seismic Response Monitoring System for Cable Bridges by Using Accelerometers
1
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
In this study, a structural health monitoring system for cable-stayed bridges is developed. In the system, condition assessment of the structure is performed based on measured records from seismic accelerometers. Response indices are defined to monitor structural safety and serviceability and derived from the measured acceleration data. The derivation process of the indices is structured to follow the transformation from the raw data to the outcome. The process includes noise filtering, baseline correction, numerical integration, and calculation of relative differences. The system is packed as a condition assessment program, which consists of four major processes of the structural health evaluation: (i) format conversion of the raw data, (ii) noise filtering, (iii) generation of response indices, and (iv) condition evaluation. An example set of limit states is presented to evaluate the structural condition of the test-bed and cable-stayed bridge.
Abstract
In this study, a structural health monitoring system for cable-stayed bridges is developed. In the system, condition assessment of the structure is performed based on measured records from seismic accelerometers. Response indices are defined to monitor structural safety and serviceability and derived from the measured acceleration data. The derivation process of the indices is structured to follow the transformation from the raw data to the outcome. The process includes noise filtering, baseline correction, numerical integration, and calculation of relative differences. The system is packed as a condition assessment program, which consists of four major processes of the structural health evaluation: (i) format conversion of the raw data, (ii) noise filtering, (iii) generation of response indices, and (iv) condition evaluation. An example set of limit states is presented to evaluate the structural condition of the test-bed and cable-stayed bridge.
참고문헌 (16)
- "Center for Engineering Strong Motion Data"[URL]
- Research of the mid-long termed optimization of national integrated seismic network and its operational institutionalization, "Science & Technology Policy Institute", Korea Meteorological Administration, ~ (2006)
- "2010", ~
- Kim KS, "Introduction of Long Span Bridge Management Center", Journal of Disaster Prevention, 18(1), pp.63~75 (2016)
- "Current Long Span Bridge Monitoring&Measurement System" (2021)[URL]
- Korea Infrastructure Safety & Technology Corporation, "Disaster reponse manual for long span bridge management center. Operation Guideline", ~ (2015)
- The Central Integration Development of Bridge Health Monitoring System, "Kim SK", Korea Expressway Corp. Highway Research Center, ~ (1999)
- Celik OC, "Seismic risk assessment of gravity load designed reinforced concrete frames subjected to Mid-America ground motions", Journal of Structural Engineering, 135(4), pp.414~424 (2009), ASCE
- Katsuchi H, "Structural Monitoring and Design Verification of Akashi Kaikyo Bridge", Proceedings of the 11th International Conference on Engineering. Science, Construction, and Operations in Challenging Environments, pp.1~8 (2008)
- "2020", ~
- "2021", ~
- Nakamura Y, "A Method for Dynamic Characteristics Estimation of Subsurface using Microtremor on the Ground Surface", Quarterly Report of RTRI, 30(1), pp.25~33 (1989)
- Development of the Public Buildings Emergency Integrity Assessment Technology using Seismic Acceleration Response Signal, "National Disaster Management Institute", ~ (2012)
- Shimada T, "Estimating method of cable tension from natural frequency of high mode", Proceeding of Japan Society of Civil Engineers, 501(1-29), pp.163~171 (1994)
- Brigham EO, "The Fast Fourier Transform and Its Application" (1998), Prentice Hall
- Ljung L, "System Identification: Theory for the User" (1997), Prentice Hall