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Bidirectional shaking‐table tests of unbonded recycled‐rubber fiber‐reinforced bearings (RR‐FRBs)
Author(s) -
Losanno Daniele,
Spizzuoco Mariacristina,
Calabrese Andrea
Publication year - 2019
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.2386
Subject(s) - earthquake shaking table , structural engineering , base isolation , base (topology) , natural rubber , acceleration , shear (geology) , materials science , fiber , composite material , engineering , mechanical engineering , physics , mathematics , mathematical analysis , classical mechanics , frame (networking)
Summary This paper describes the results of bidirectional shaking‐table tests performed on novel, low‐cost, and eco‐friendly recycled‐rubber fiber‐reinforced bearings (RR‐FRBs). The research aims to demonstrate the adequacy of square bearings made of recycled rubber when it comes to performing a base isolators in low‐rise residential buildings in developing regions of the world. The results of shear tests on RR‐FRBs are described in this paper as well as the response of a base‐isolated prototype building under bidirectional ground‐motion excitation. Compared with the results of a fixed‐base structure, the peak drift ratio, peak base shear, and peak acceleration on the different floors are significantly reduced for the base‐isolation system of the RR‐FRBs. The results of this work confirm the option of adopting RR‐FRBs as base isolators in real structures, with the stability of the devices under major bidirectional excitation requiring further investigation.