Optimization of Sky-Bridge location at coupled high-rise buildings considering seismic vulnerability functions

Arada, Ahmad Housam and Ozturk, Baki and Kassem, Moustafa Moufid and Nazri, Fadzli Mohamed and Tan, Chee Ghuan (2022) Optimization of Sky-Bridge location at coupled high-rise buildings considering seismic vulnerability functions. Structural Engineering and Mechanics, 82 (3). pp. 385-400. ISSN 1225-4568, DOI https://doi.org/10.12989/sem.2022.82.3.385.

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Sky-bridges between adjacent buildings can enhance lateral stiffness and limit the impact of lateral forces. This study analysed the structural capabilities and dynamic performances of sky-bridge-coupled buildings under various sets of ground motions. Finite Element (FE) analyses were carried out with the link being iteratively repositioned along the full height of the structures. Incremental dynamic analysis (IDA) and probabilistic damage distribution were also applied. The results indicated that the establishment of sky-bridges caused a slight change in the natural frequency and mode shapes. The sky-bridge system was shown to be efficient in controlling displacement and Inter-Storey Drift Ratio (%ISDR) and reducing the probability of damage in the higher floors. The most efficient location of the sky-bridge, for improving its rigidity, was found to be at 88% of the building height. Finally, the effects of two types of materials (steel and concrete) and end conditions (hinged and fixed) were studied. The outcomes showed that coupled buildings with a sky-bridge made of steel with hinged connection could withstand ground motions longer than those made of concrete with fixed connection.

Item Type: Article
Funders: Research University Individual (RUI) Grant Scheme [Grant No: 8014080]
Uncontrolled Keywords: Beta distribution function; Coupled high-rise buildings; Fragility curves; Optimization; Sky-bridge; Vulnerability functions
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 13 Oct 2023 08:10
Last Modified: 13 Oct 2023 08:10
URI: http://eprints.um.edu.my/id/eprint/42204

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