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Title |
Evaluation of Tension of Stay Cable using MBM (Measurement-based Model)
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Keywords |
사장 케이블 ; 계측기반모델 ; 상시계측 모니터링 ; 케이블 장력 ; 장력 영향인자 Stay cable ; Measurement-based model ; Usually measured monitoring ; Cable tension ; Tension influence factor |
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Abstract |
This study presents the recomposition of MBM (measurement-based model) using natural frequencies and modes from the usually measured data, and the evaluation of cable tension in service from the analysis results upon MBM of existing CSB (cable stayed bridge). The cable tension is shown to be different according to the position attached to cable and loading type. The measured cable tensions are not different distinctly according to position attached cable under dead and live loads, but larger than those under design loads. The distribution of cable tension calculated upon the MBM is similar to those of measured tension although the former is more than those of cable tension upon the design model. Considering to long-term behaviors of cable, therefore, the design of cable in CSB needs to apply the analysis results on MBM. For this purpose, future study needs lots of measured data and MBM is used to analyze the long-term behavior of cable in CSB.
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