OPTIMIZATION OF LINK LENGTH AND PLACEMENT OF ECCENTRICALLY BRACED FRAME (EBF) TO ENHANCE STRUCTURAL RESPONSE IN A 12-STORY STEEL BUILDING
Abstract
Seismic-resistant building design is essential in regions like South Kalimantan, which are prone to earthquakes and dominated by soft soil conditions. The Eccentrically Braced Frame (EBF) system offers an effective structural solution due to its high stiffness and ductility through controlled plastic deformation in the link element. However, the performance of this system is highly influenced by the link length and the placement of the bracing.This study aims to optimize the link length and the placement of eccentric bracing to improve the structural performance of a 12-story steel building under seismic loading. Numerical simulations were conducted using SAP2000 software by applying several EBF configurations to evaluate structural responses such as drift ratio, base shear, and element capacity checks based on SNI 1726:2019 and AISC 341-16 standards.The results show that variations in link length and bracing placement significantly affect structural behavior. Models utilizing short links and strategically placed bracing demonstrated lower drift and higher base shear values compared to structures without EBF. Therefore, optimizing EBF components proves to enhance both the resilience and efficiency of high-rise steel building design in seismic zones.
Keywords: Eccentrically Braced Frame, Link Optimization, Structural Response, Steel Building.
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DOI: https://doi.org/10.20527/crc.v10i8.20803
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