研究は、集成材林道橋の動的特性を明らかにしたものである。
まず、集成材橋３橋(揚ノ沢橋、鵜養橋、坊川橋）に対し、振動実測を行った。
次に、得られた応答加速度から、固有振動数を算定し同時に数値解析結果
との比較を行い、さらに変位計により、静的変位、動的変位を計測しそこから
衝撃係数を推定した。
Study on Dynamic Response Characteristics and Estimation based on Vibration Experiment for Forest Road Bridges using Glued Laminated Timbers
The purpose of this paper is to clarify dynamic response characteristics
of the forest road bridges using glued laminated timbers.
This study made, in the first place, the experiments of vibration for
three bridges, Uyashinai bridge, Agenosawa bridge and Bougawa bridge.
Then, upon comparing with numerical results, after calculation of
natural frequency based on the response acceleration obtained
by this vibration experiment, the dynamic load allowance was estimated by
measuring both static and dynamic displacement
with the displacement meter.