DESIGN OF BUCLIKNG RESTRAINED BRACED FRAME STEEL STRUCTURE FOR HIGH RISK BUILDING BASED ON SNI 1726-2012

• Main Author: AGHNIA (NIM : 15009023), HAMAMA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22333
• Institution: Institut Teknologi Bandung

Buckling Restrained Braced Frame (BRBF) system is improvement of Special Concentrically Braced Frame (SCBF) system which the brace can not undergo brace <br /> <br /> <br /> buckling because of axial compression. For eliminating the buckling failure, a compression element is laterally braced at close regular intervals, so that the compression element's un-braced length effectively approaches zero and brace has similar strength in tension and compression. Design of BRBF with V-inverted <br /> <br /> <br /> configuration is applied to a two-story, a five-story, and a ten-story building. The performance of BRBF system in this case would be compared to design result done <br /> <br /> <br /> by other writers using Special Concentrically Braced Frame (SCBF) system and Eccentrically Braced Frame (EBF) system. <br /> <br /> <br /> Preliminary design is done by estimating cross-section profiles, applying earthquake and gravitation loading, and checking brace capacity. The brace used in the design is a modification of brace specimen 1 tested by University of California in 2006. Designing the elements endured by seismic loading is done by capacity design and designing the elements endured by gravitation loading only is done by computer run results. Pushover analysis done shows that plastification sequence is appropriate, the structure is strong enough endured by seismic loading, and structure kinerja is met the <br /> <br /> <br /> requirement. <br /> <br /> <br /> The results show that BRBF system in this study meets the tight drift requirement for category IV 1%. In design, drift requirement does not determine the design of twostory and five-story bulding because the design is determined by strength requirement. For ten-story building, the design is determined by drift requirement. <br /> <br /> <br /> Compared to the similar buildings using SCBF and SRBE system, BRBF system relatively has the lightest weight of steel structure columns, beams, and steel cores of <br /> <br /> <br /> the braces and has greater drift.