Application of Equivalent Force Control Method for Pseudo-dynamic Substructure Tests of Coupling Beam Damper

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (8) : 72-76.

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Application of Equivalent Force Control Method for Pseudo-dynamic Substructure Tests of Coupling Beam Damper

ZHOU Da-rui1; XU Guo-shan1; WU Bin1; TENG Jun2; MA Bo-tao2

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Abstract

The equivalent force control method (EFCM) replaces numerical iteration with feedback control strategy to solve the nonlinear equations of motion for real-time substructure testing with implicit integration method. This paper successfully applies the EFCM for the pseudo-dynamic substructure tests of coupled shear wall structure with coupling beam damper specimen in order to investigate the seismic performance of the structure. The EFCM and the determination of some key elements in EFC were introduced, and the simplified model and pseudo-dynamic tests of the coupled shear wall structure with coupling beam damper were presented. It is shown that the EFCM can achieve excellent performance in terms of stability and accuracy if the equivalent force controller and force-displacement conversion factor were properly designed, and the coupling beam damper can effectively control the seismic response of the coupled shear wall.

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structural experimental technique / pseudo-dynamic substructure testing / equivalent force control method / coupling beam damper / coupled shear wall structure

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ZHOU Da-rui;XU Guo-shan;WU Bin;TENG Jun;MA Bo-tao. Application of Equivalent Force Control Method for Pseudo-dynamic Substructure Tests of Coupling Beam Damper[J]. Journal of Vibration and Shock, 2011, 30(8): 72-76