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Evaluation of Applicability of Cable Force Monitoring System of Cable-stayed Bridge by Field Loading Test  

Kim, Jeong-Hoon ((주)에이티맥스)
Song, Jae-Ho (국립금오공과대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.13, no.1, 2009 , pp. 205-213 More about this Journal
Abstract
This study was planned to develop monitoring system of cable force to resolve cable force of cable-stayed bridge efficiently in a long-term plan. In the proposed monitoring system, firstly data are sampled from real-time acceleration record, secondly these sampled data are frequency analyzed by using the FFT(Fast Fourier Transform) algorism and lastly the analyzed results are averaged and generalized. For evaluating the applicability of this monitoring system, field loading test has performed in real cable-stayed bridge. In comparison with cable force by field manual calculation and cable force of monitoring system by semi-automatic calculation, the difference of calculated cable forces has within 1% error range and it is acceptable range. Additionally within negligible 5% error range of difference has occur between field manual calculation and monitoring system by automatic calculation. so monitoring system in this study has been verified to be reliable.
Keywords
Cable-stayed bridge; Cable force; Monitoring system; Frequency analysis; Fast Fourier Transform; Field loading test;
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1 Kim, C.-Y., Jung, D.-S., Kim, N.-S., Kwon, S.-D., Feng, M. Q., "Effect of vehicle weight on natural frequencies of bridges measured from traffic-induced vibration", Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics (IEM), Vol. 2, No. 1, June 2003, pp. 109-115   DOI   ScienceOn
2 천병식, 곽수현, 남순성, 신경섭, "서울지하철 터널 공사시의 계측관리기준치 결정방법에 관한 연구",, 대한토목학회 학술발표회논문집, pp.747-750
3 김상효, 최수일, 여동훈, 이상호, "진동법을 이용한 케이블의 장력측정기법과 계측환경의 영향분석", Journal of the Engineering Research Institute, Yonsei University, Vol. 29, No. 2(47), 1997, pp.143-150
4 강경구, 신뢰성에 기초한 사장교 케이블장력관리를 위한 관리한계치 설정에 관한 연구, 박사학위논문, 한양대학교, 2005, pp.12-50
5 정상국, 전제성,이송, 심태섭, "국내 적용되고 있는 흙막이 구조물의 관리기준치에 대한 신뢰도 분석", 대한토목학회지, 19권 I-30호, pp.479-487