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Semiactive control of rigid blocks under earthquake excitation
Author(s) -
Pecorelli Marica L.,
Ceravolo Rosario
Publication year - 2018
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.2988
Subject(s) - earthquake shaking table , block (permutation group theory) , structural engineering , stiffness , robustness (evolution) , excitation , earthquake engineering , engineering , control theory (sociology) , computer science , control (management) , mathematics , geometry , biochemistry , chemistry , electrical engineering , artificial intelligence , gene
Summary This paper investigates the usefulness of a semiactive control to reduce the overturning vulnerability of a rigid block on a rigid plane under earthquake excitation. The proposed feedback law is used to set the stiffness of restraints placed at the 2 lower corners of the block. The performance of the semiactive control is numerically validated by subjecting the block to 100 recorded accelerograms. Specific simulations are performed to study the effect of different anchorage design parameters on the utility of the control. Finally, the robustness of the proposed control is addressed with respect to typical issues of the real‐world implementation.