Seismic Performance of a Hybrid Coupled Wall System Using different Coupling Beam Arrangements

Yıl 2022, Cilt: 33 Sayı: 5, 12401 - 12428, 01.09.2022

Molham Salameh , Mohsenali Shayanfar , Mohammad Barkhordari

https://doi.org/10.18400/tekderg.782642

Cited By: 3

Öz

This study implemented multirecord nonlinear dynamic and fragility analysis in order to gain more insight into the hybrid coupled wall (HCW) system. Two potentials are used to construct coupling beams, which are the typical steel coupling beam and the replaceable steel coupling beam. Furthermore, an innovative idea for replaceable beams is discussed utilizing reinforced concrete infill instead of steel stiffeners. A new simplified FE model for such beam is carried out in order to explore how this new beam influences the seismic performance of HCW system. An additional equivalent bare RC wall case study is also taken into account for a comprehensive comparison. A precise 2D modelling method using Opensees platform is adopted after validation against experimental and complex 3D numerical simulations. The results indicate a good effect of the replaceable coupling beams concept upon reducing the vulnerability of wall piers under low and moderate events. In terms of coupling beams fragility, the replaceable steel coupling beams also demonstrate better damage resistance when compared with typical steel beams under low and moderate seismic events. Using reinforced concrete infill instead of steel stiffeners can significantly protect beams maintenance without affecting wall piers’ vulnerability.

Anahtar Kelimeler

Hybrid coupled wall (HCW), replaceable steel coupling beam (RSCB), replaceable composite coupling beam, nonlinear dynamic analysis, fragility assessment

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