Title: Application of the resettable semi-active damper device for macro modelling of confined semi-interlocking masonry walls

Authors: Mehdi Hemmat; Yuri Z. Totoev; Mark J. Masia

Addresses: Centre for Infrastructure Performance and Reliability, The University of Newcastle, Callaghan, NSW 2308, Australia ' Centre for Infrastructure Performance and Reliability, The University of Newcastle, Callaghan, NSW 2308, Australia ' Centre for Infrastructure Performance and Reliability, The University of Newcastle, Callaghan, NSW 2308, Australia

Abstract: In previous research by the authors, the semi-interlocking masonry (SIM) was investigated as infill panels for framed structures and its favourable seismic performance was established through laboratory tests. Confined semi-interlocking masonry (CSIM) is a new application of SIM that aims to enhance earthquake performance of confined masonry buildings. Numerical simulations are performed to estimate the structural capacity of CSIM buildings. Micro and macro-modelling strategies are two major approaches for numerical simulation of masonry buildings. This paper proposes a macro-model for CSIM buildings by using a resettable semi-active damper model to simulate the behaviour of the SIM panel. The hysteretic performance of CSIM walls using the proposed macro-model was compared with the load-displacement pushover curve resulting from the FEA micro-modelling approach. The acceptable match between the responses of CSIM walls obtained from the micro and the macro-model confirmed the capability of the proposed model to capture the capacity of CSIM walls.

Keywords: confined semi-interlocking masonry; macro-model; micro-model; the resettable semi-active damper; sliding joints; hysteretic responses.

DOI: 10.1504/IJMRI.2021.113944

International Journal of Masonry Research and Innovation, 2021 Vol.6 No.2, pp.208 - 231

Received: 29 Apr 2020
Accepted: 29 Jun 2020
Published online: 02 Apr 2021 *

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