摘要
本文对分层地基自由振动特性的精确方法进行了详细的讨论,所采用的方法有传递矩阵法、传递函数法和机械阻抗法,着重对分层地基的固有频率进行了分析,并与有限元法进行了比较。文中还分析了某一工程实例,并与现场地脉动试验结果进行了比较,同时考察了层数简化及“基岩初见深度”等因素对计算结果的影响。
In this paper the authors present an exact solution of determination of Natural frequency of layered soil deposit by transfer matrix method, transfer function method and impendence method based on the data of cross-hole test. In order to verify the results by the methods mentioned above, it is necessary to compare to the results of finite-element method and field measurement. The effects of the simplification of the number of layers and the depth of bedrock are also considered.
关键词
地基
自由振动
分层
矩阵法
函数法
Layered soil deposits, Natural Frequency, Transfer matrix method,Transfer function method, Impendence method, Finite-element method
