砂粒受水平振動行為之研究

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题名:	砂粒受水平振動行為之研究
作者:	吳京霖;Jing-Li Wu
贡献者:	土木工程研究所
关键词:	振動;流動層;無因次加速度;四方表面堆積;三角表面堆積;dimensionless peak vibrational acceleration;fluid layar;vibration;sand;Square surface stucture;triangular surface structure
日期:	2001-07-12
上传时间:	2009-09-18 17:09:08 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	This research examines the behavior of dry sand and sand pile under the forcing of horizontal vibration. Another subject , we use steel spheres to simulate the unstable condition of sand-pile slope. In the case of horizontal vibrations , The thickness of fluid layar near the surface , H , is propotional to the dimensionless peak vibrational acceleration G and size(length) of the sand box. In the case of sand-pile , there are two types of motions. Initial sand surface collapse and submoving layer. The moving velocity of the surface collapse is faster than the velocity of the moving layer. The moving velocity is propotional G. In the experiment of slope stability , we use steel sphere to simulate the grained stucture of pile surface. Square surface stucture of pile is more stable than triangular surface structure , but in the natural fact ,surface structure of pile is nearly triangular. This research examines the behavior of dry sand and sand pile under the forcing of horizontal vibration. Another subject , we use steel spheres to simulate the unstable condition of sand-pile slope. In the case of horizontal vibrations , The thickness of fluid layar near the surface , H , is propotional to the dimensionless peak vibrational acceleration G and size(length) of the sand box. In the case of sand-pile , there are two types of motions. Initial sand surface collapse and submoving layer. The moving velocity of the surface collapse is faster than the velocity of the moving layer. The moving velocity is propotional G. In the experiment of slope stability , we use steel sphere to simulate the grained stucture of pile surface. Square surface stucture of pile is more stable than triangular surface structure , but in the natural fact ,surface structure of pile is nearly triangular.
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