DEVELOPMENT OF A NEW METHOD TO REDUCE SHINKANSEN-INDUCED WAYSIDE VIBRATIONS APPLICABLE TO RIGID FRAME BRIDGES: BRIDGE-END REINFORCNG METHOD:BRIDGE-END REINFORCING METHOD

概要

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Tokaido Shinkansen plays a major role in the domestic transportation system, while in some cases it gives rise to noise and vibration problems in the wayside. Many efforts have been made to solve the problems, but practical measures for reducing the vibration to acceptable level are not developed until now. This paper proposes a new vibration reduction method applicable to rigid frame bridges with cantilever girders adopted in urban areas. At first, field vibration measurement is made and a numerical analysis tool is developed to simulate the traffic induced vibration. Based on the field measurement and numerical study, a new method that rigidly connects the cantilever girders is proposed and the practical structural system is carefully designed. The new measure is installed to an actual rigid frame bridge. The numerical as well as field investigation shows satisfactory behavior for the reduction measure. Successful agreement of field data in the effectiveness with numerical ones is also confirmed.
公益社団法人土木学会の論文