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- W2086452792 abstract "Responses of a rigid structure with a frictional base isolation system subjected to random horizontal-vertical earthquake excitations are studied. The ground accelerations are modelled by segments of stationary and nonstationary Gaussian white noise and filtered white noise processes. The technique of nonstationary equivalent linearization is used for the response analysis. The differential equation governing the covariance matrix is solved and for a range of values of parameters, the root-mean-square displacement and velocity responses of the structure are calculated. The results are compared with those obtained by a series of Monte-Carlo digital simulations and reasonable agreement is observed. For several values of parameters, responses of the structure to the accelerograms of the North-South and vertical components of El Centro 1940 earthquake are studied. Particular attentions are given to the effects of vertical excitation and the elastic stiffness of the isolation system. It is observed that vertical excitation amplifies the horizontal slip of the structure to an extent. The amount of amplification under various conditions are evaluated and discussed. It is also shown that the slip displacement decreases sharply as the elastic restoring force of the isolator increases." @default.
- W2086452792 created "2016-06-24" @default.
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- W2086452792 date "1988-03-01" @default.
- W2086452792 modified "2023-09-25" @default.
- W2086452792 title "Response of frictional base isolation systems to horizontal-vertical random earthquake excitations" @default.
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- W2086452792 doi "https://doi.org/10.1016/0266-8920(88)90003-3" @default.
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