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<p>A study is performed to estimate the critical seismic incidence angle for a nine-story reinforced concrete dual system building, categorized as plan-asymmetric, by considering a combination of two demand parameters, the Maximum Inter-story Drift (MLID) along the height, and the Seismic Vulnerability Index (SVI). The influence of excitation directionality on the response of the building was investigated by nonlinear dynamic analyses, by applying seven scaled bidirectional ground motion records, oriented in eight incidence angles ranging from 0° to 315°, with a 45° increment. The scaling was made for a peak ground acceleration PGA = 0.30g, according to the elastic response spectrum specified for Bucharest by the Romanian seismic code P100-1/2013. From the results, it was found that the most unfavourable response due to a specific seismic excitation may occur at any angle of incidence, which is not necessarily 0° or 90°, and that the response depends not only on the structural configuration, but also on the excitation characteristics. In addition, the influence of the flexible edge (FE) on the structural demand in terms of SVI was studied. The maximum values for SVI were obtained for the most critical angle of incidence, which is the one that has the higher MLID values in the FE for all accelerograms.</p>
</abstract>

A study is performed to estimate the critical seismic incidence angle for a nine-story reinforced concrete dual system building, categorized as plan-asymmetric, by considering a combination of two demand parameters, the Maximum Inter-story Drift (MLID) along the height, and the Seismic Vulnerability Index (SVI). The influence of excitation directionality on the response of the building was investigated by nonlinear dynamic analyses, by applying seven scaled bidirectional ground motion records, oriented in eight incidence angles ranging from 0° to 315°, with a 45° increment. The scaling was made for a peak ground acceleration PGA = 0.30g, according to the elastic response spectrum specified for Bucharest by the Romanian seismic code P100-1/2013. From the results, it was found that the most unfavourable response due to a specific seismic excitation may occur at any angle of incidence, which is not necessarily 0° or 90°, and that the response depends not only on the structural configuration, but also on the excitation characteristics. In addition, the influence of the flexible edge (FE) on the structural demand in terms of SVI was studied. The maximum values for SVI were obtained for the most critical angle of incidence, which is the one that has the higher MLID values in the FE for all accelerograms.

A Combined-Index Study on the Influence of Earthquake Incidence Angle on the Seismic Performance of Reinforced Concrete Plan-Asymmetric Buildings

Doctoral student, Eng., Technical University of Civil Engineering

Faculty of Engineering in Foreign Languages

Assoc. Prof., PhD, Technical University of Civil Engineering

Faculty of Civil, Industrial and Agricultural Buildings

Modelling in Civil Environmental Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A study is performed to estimate the critical seismic incidence angle for a nine-story reinforced concrete dual system building, categorized as...

A Combined-Index Study on the Influence of Earthquake Incidence Angle on the Seismic Performance of Reinforced Concrete Plan-Asymmetric Buildings

Publié en ligne: 02 févr. 2022

Pages: 40 - 54

DOI: https://doi.org/10.2478/mcee-2021-0014

Mots clés
plan-asymmetric building, critical incidence angle, maximum inter-story drift, seismic vulnerability index

© 2021 Arif Weaam et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A Combined-Index Study on the Influence of Earthquake Incidence Angle on the Seismic Performance of Reinforced Concrete Plan-Asymmetric Buildings

Publié en ligne: 02 févr. 2022

Pages: 40 - 54

DOI: https://doi.org/10.2478/mcee-2021-0014

Mots clésplan-asymmetric building, critical incidence angle, maximum inter-story drift, seismic vulnerability index

© 2021 Arif Weaam et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
plan-asymmetric building, critical incidence angle, maximum inter-story drift, seismic vulnerability index