振動・大気環境

[VII-109] Countermeasure for propagation path of environmental vibration using mass body -Consideration of vibration reduction mechanism by numerical analysis-

〇Taiga Chiba¹, Yasuyuki Iwane², Masahito Kobayashi², Yasunao Matsumoto¹ (1.Saitama University, 2.TOBISHIMA CORPORATION)

Keywords:Construction work vibration, Propagation path countermeasures, Large sandbag, Steel plate, Numerical analysis

A practical method to counter the propagation path of construction work vibration has not yet been established in terms of safety and cost effectiveness. In this report, the effect of the stiffness of the surface to which the mass body is grounded and the length of the direction of vibration propagation on the vibration reduction effect is investigated by numerical analysis. From the results, it was confirmed that the vibration reduction effect was greater with the mass body with increased stiffness. It is also suggested that the vibration reduction effect can be obtained at a lower vibration frequency as the depth of the mass body increases.