Seismic Performance Comparison of Reinforced Concrete and Steel Frames with Various Bracing Configurations
Journal Title: GeoStruct Innovations - Year 2024, Vol 2, Issue 3
Abstract
Earthquakes, characterized by unpredictable seismic events, release substantial lateral energy, which propagates through structures, often causing significant damage before the motion subsides. In the absence of specific seismic design guidelines in the British Standards (BS), the introduction of the Eurocode has provided a more comprehensive framework for seismic resistance. Although Sarawak, Malaysia, is situated in a low seismic hazard zone, the effects of seismic forces on structures that are not explicitly designed for seismic resistance remain poorly understood and under-researched. This study employs SAP2000 software to conduct nonlinear pushover analysis (POA) and nonlinear time history analysis (NTHA) on medium-rise reinforced concrete (RC) and steel frame buildings subjected to lateral forces and dynamic ground motions scaled to the local seismic intensity, in accordance with Eurocode 8 (EC 8). The seismic responses of different structural models, incorporating various bracing configurations, were compared to evaluate the relative performance of each system. The influence of material type and bracing configuration on structural behavior under seismic loading was examined. The results suggest that, among the configurations analyzed, the RC frame with central inverted V-bracing (Model 1) exhibits superior seismic performance in terms of lateral stiffness, displacement control, and energy dissipation, positioning it as the most optimal design solution for the study's conditions. This investigation highlights the critical role of structural design and bracing configuration in enhancing the seismic resilience of buildings, even in regions with relatively low seismic risk.
Authors and Affiliations
Vincent Zeng Teck Lee, Azira Taip
Keywords
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- EP ID EP753614
- DOI https://doi.org/10.56578/gsi020305
- Views 17
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