Abstract

JIANG, Yudong; LUO, Jinming; AZARKHOSH, Hojatallah  and  WU, Erjun. The switching control method for the nonlinear response of seismic surface based on the local T-S model. Earth Sci. Res. J. [online]. 2020, vol.24, n.3, pp.327-333.  Epub Apr 24, 2021. ISSN 1794-6190.  https://doi.org/10.15446/esrj.v24n3.90432.

Based on the local T-S model, the switching control method for the nonlinear response of the seismic surface is studied, and the stiffness matrix of the composite interlayer element of viscoelastic damper and herringbone support is derived. The high-order single step 6 method is applied to the nonlinear seismic response analysis and the instantaneous optimal active switching control. The local T-S model and controller are designed, and the approach and control of global nonlinear responses are realized through the multi-model switching control. The results show that the proposed method can accurately reflect the reduction of seismic ground load and the switching control of the main structure when the viscoelastic damper is installed. The switching control effect of the maximum spatial displacement becomes more and more obvious with the change of time history, and the control effect of all layers applying the switching control force is the most significant. Whether the controller is disturbed or not, it is always good and stable performance.

Keywords : Local T-S model; Seismic surface; Nonlinear response; Switching; Control; Damper.

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