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Transfer functions for rigid rectangular foundations
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DOI：10.1002/(SICI)1096-9845(199701)26:1<5::AID-EQE619>3.0.CO;2-X.png)
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摘要
En 中文
Closed-form expressions and comprehensive numerical solutions are presented for the transfer functions of surface-supported, rigid, rectangular foundations excited by horizontally polarized, incoherent shear waves for which the motions are parallel to one of the foundation sides, The free-field ground motion is specified stochastically in terms of a local power spectral density function and an orthotropic incoherence function which decays exponentially with the square of the excitation frequency and the separation distance. The response quantities examined include the lateral and torsional components of the foundation motion, Displayed graphically, the results elucidate the effects and relative importance of the numerous parameters involved, For vertically incident incoherent wave fields, the lateral transfer function of a rectangular foundation is related to that of a judiciously selected square foundation, and the interrelationship of the results is examined.
Keyword:
rectangular foundations
dynamics
transfer functions
incoherence
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