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http://dx.doi.org/10.12989/sem.2022.82.3.385

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

Arada, Ahmad Housam (School of Civil Engineering, Universiti Sains Malaysia)
Ozturk, Baki (Department of Civil Engineering, Hacettepe University, Faculty of Engineering)
Kassem, Moustafa Moufid (School of Civil Engineering, Universiti Sains Malaysia)
Nazri, Fadzli Mohamed (School of Civil Engineering, Universiti Sains Malaysia)
Tan, Chee Ghuan (Department of Civil Engineering, Faculty of Engineering, Universiti Malaya)
Publication Information
Structural Engineering and Mechanics / v.82, no.3, 2022 , pp. 385-400 More about this Journal
Abstract
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.
Keywords
beta distribution function; coupled high-rise buildings; fragility curves; optimization; sky-bridge; vulnerability functions;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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