论文信息 - TRAIN TRACK-GROUND DYNAMICS DUE TO HIGH SPEED MOVING SOURCE AND GROUND VIBRATION TRANSMISSION

TRAIN TRACK-GROUND DYNAMICS DUE TO HIGH SPEED MOVING SOURCE AND GROUND VIBRATION TRANSMISSION

本研究では, 高速列車走行を想定して, 半無限地盤, 成層地盤上の軌道構造をはりでモデル化し, 高速移動載荷・加振状態でのはり―地盤系としての動的相互作用解析を行った. そして軌道はりと地表面の応答を移動速度, 地盤条件のパラメータの下で調べた. 解析手法には, フーリエ変換法を適用して波数―振動数領域解を求め, その空間―時間領域への逆変換には離散波数法と高速フーリエ・アルゴリズムをとっている.解析結果からは, 半無限地盤と剛基盤上の成層地盤では, 軌道振動および地盤応答が非常に異なることを指摘した. 前者にはレーリ波による共振現象があるが, 後者にはエアリー相の固有モード波との共振現象が生じる移動速度が存在する.

Hirokazu Takemiya | Wei-Ping Xie | Shuhei Satonaka

[1] H. Grundmann,et al. The response of a layered half-space to traffic loads moving along its surface , 1999 .

[2] D. L. Lansing. The displacements in an elastic half-space due to a moving concentrated normal load , 1966 .

[3] H. Takemiya. Simulation of high-speed train induced ground vibration and its mitigation by WIB , 2000 .

[4] H. A. Dieterman,et al. Steady-state displacements of a beam on an elastic half-space due to a uniformly moving constant load , 1997 .

[5] V. Krylov. Vibrational impact of high‐speed trains. I. Effect of track dynamics , 1996 .

[6] G. Eason,et al. The stresses produced in a semi-infinite solid by a moving surface force , 1965 .

[7] H. A. Dieterman,et al. The equivalent stiffness of a half-space interaction with a beam. Critical velocoties of a moving load along the beam , 1996 .

[8] D. C. Gakenheimer,et al. Transient Excitation of an Elastic Half Space by a Point Load Traveling on the Surface , 1969 .

[9] Victor V. Krylov,et al. Effects of track properties on ground vibrations generated by high-speed trains , 1998 .