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Date of Publication:2022-10-10

Journal:地震工程与工程振动

Affiliation of Author(s):建设工程学部

Volume:37

Issue:6

Page Number:64-70

ISSN No.:1000-1301

Abstract:Based on the principle of force analogy method,a pole-system model for a
   base-isolated structure was established. Considering bending and shear
   effects of rubber isolation bearings at the same time,the motion
   equations and energy equations of a base-isolated structure were derived
   and proposed. The dynamic nonlinear analysis and energy analysis were
   done for the base-isolated structure by programming. Compared with the
   results obtained by SAP2000,the validity of the presented method and the
   accuracy of the program were verified. Numerical simulation results
   indicated that the proposed method shows higher computational efficiency
   compared with the variable stiffness time integration method; The
   proposed method could consider the nonlinear of upper structure and
   calculate the plastic energy dissipation of isolation bearings and the
   upper structures components. Through compared the
   displacement,acceleration responses and energy dissipation of a
   base-isolated structure with an aseismic structure under the action of
   earthquakes,the isolation effect of the isolated structure was verified.
   The application of force analogy method was expanded and a new method
   for the dynamic and energy analysis of base-isolated structures was
   provided.

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