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Title |
Vibration Reduction Effects of Stay Cable Due to Friction Damper
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Keywords |
사장교 ; 사장 케이블 ; 마찰댐퍼 ; 진동저감효과 ; 감쇠비 ; 케이블진동 ; Cable-stayed bridge ; Stay cable ; Friction damper ; Damping reduction effect ; Damping ratio ; Cable vibration |
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Abstract |
Stay cable has a strong axial rigidity due to large intial tension and, on the other hand, it has a weak laterally flexural rigidity. Wind loads or traffic loads cause the cables to vibrate significantly and affect the mechanical properties and the performance of cables of cable-stayed bridge (CSB). Therefore, the development of vibration reduction design is an urgent task to control the vibration vulnerable long-span bridges. As Friction damper (FD) shows to reduce the amplitude and duration time of vibration of cable of CSB from measured date in field test, friction damper can be considered that it is effective device significantly to reduce the amplitude and duration time in vibration of cable of CSB under traffic load, wind load and so on. Vibration characteristics of cable can change according to manufacturing method and type of established form. Nevertheless, analysis method in this study can present the design of friction damper for vibration reduction of cable of cable-stayed bridge from now on.
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