ATTENUATION WITH DISTANCE OF TRAFFIC-INDUCED VIBRATIONS

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概要

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• The purpose of this study is to investigate the propagation characteristics of the traffic-induced vibrations and to make a prediction method of the attenuation with distance of the traffic-induced vibrations. To do this field tests were performed by using test trucks and ground vibrations were measured on the ground surface and in the ground at depths of 2 and 4m. Moreover the investigation of the real traffic-induced vibrations all over Japan was carried out and ground vibrations were measured as far as 20m from the center of the outside lane.Conclusions obtained from the investigations are following : i) The Rayleigh wave is dominant in the traffic-induced vibrations. ii) The vibration due to large truck (the mass is about 20Mg) has almost same frequency as small truck (the mass is about 10Mg). Frequency of the traffic-induced vibrations is mainly determined by ground soil conditions. iii) The higher the frequency of the ground vibration is, the larger the attenuation with distance is. One of reasons on this is that soils have rate-independent damping characteristics. iv) The larger the acceleration at reference point (at a distance of 5m from the center of the outside lane) is, the larger the attenuation with distance is. One of reasons is that the propagation velocity and the damping ratio of soils depend on shear strain even in a very small strain region. v) In the condition that the acceleration at reference point is same, soft ground has smaller attenuation with distance than hard ground. vi) Quantitatively vibration level recuces 1-7 dB per double distance.

• 社団法人地盤工学会の論文
• 1979-06-15

著者

• 谷口 栄一

  建設省

• 谷口 栄一

  Soil Dynamics Division Public Works Research Institute

• 沢田 健吉

  Tokushima University

関連論文

• REDUCTION OF GROUND VIBRATIONS BY IMPROVING SOFT GROUND
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• SHAKING TABLE TESTS ON GRAVEL DRAINS TO PREVENT LIQUEFACTION OF SAND DEPOSITS
• 斜面崩壊 (昭和59年(1984年)長野県西部地震災害調査報告)
• 地下物流システムに関する研究
• 道路のサ-ビス水準の評価に関する調査研究 (第44回建設省技術研究会報告)
• 道路の渋滞対策 (道路交通特集)
• 休日における観光交通の特性分析
• 道路交通振動の距離減衰-3-
• 盛土を伝播する振動に関する室内模型実験
• 道路交通振動の距離減衰-2-
• 道路交通振動の伝播特性
• 動的性質1・3(一般 粘性土)(第21回土質工学研究発表会)
• 318 道路交通振動の距離減衰(『土質工学会論文報告集』Vol. 19,No. 2(1979年6月発行)掲載論文の概要)
• ATTENUATION WITH DISTANCE OF TRAFFIC-INDUCED VIBRATIONS
• 道路交通振動の距離減衰-1-
• 共振法による不撹乱粘土の動的変形係数の測定
• 擁壁の耐震設計調査
• 2次元有限要素法による地盤を伝播する振動の解析
• 地盤を伝播する振動の距離減衰に関する一考察
• 新しい交通システム (都市と住宅) -- (都市・住宅問題への提案)

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