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Title |
Evaluation of Applicability of Cable Force Monitoring System of Cable-stayed Bridge by Field Loading Test
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Keywords |
사장교 ; 케이블 장력 ; 모니터링 시스템 ; 주파수 분석 ; 고속 푸리에 변환 ; 현장재하시험 ; Cable-stayed bridge ; Cable force ; Monitoring system ; Frequency analysis ; Fast Fourier Transform ; Field loading test |
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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.
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