| 講演要旨(和文) | | 名古屋高速道路の４号東海線（高架橋道路）では，建設に先立ち，車両の走行により発生する地盤振動の予測が行われた．今般，高架橋の完成に伴い，現地計測を行って，過年度の振動予測手法，予測結果を検証した．その結果，段差走行実験による等価加振力は，過年度の実験から推定した値の約1/2であったにも拘らず，建物における予測値は過年度の予測値と殆ど一致した．段差振動は，建物への伝達時に大きく低減し，建物では20Hz等が卓越する．一方，過年度と今年度の20Hzの地盤の伝達関数を比較すると，同様の分布であった．このことが，建物内の振動レベルがほぼ同等となった主要因と考えられる． |
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| | 講演要旨(英文) | | About the No.4 Tokai line (elevated bridge road) of the Nagoya highway, prediction of the ground shaking which occurs by run of vehicles was performed in advance of construction. This time, with completion of an elevated bridge, field experiment was carried out and the vibration prediction technique of a past year and the prediction result were verified. As a result, although the equivalent excitation force by a level difference driving experiment was about of value presumed from the experiment of past year 1/2, the predicted value in a building was almost in agreement with the predicted value of a past year. Level difference vibration is greatly reduced at the time of transfer in a building, and 20 Hz etc. excels in a building. On the other hand, it was the same distribution when the transfer function of the 20-Hz foundation of a past year and the current fiscal year was compared. This is considered to be the key factor which became almost equivalent. |
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