PERFORMANCE EVALUATION OF STEEL STRUCTURE IN DUAL SYSTEM WITH CONCENTRIC-BRACED FRAME AND ECCENTRIC-BRACED FRAME AS SEISCMIC-FORCED RESISTANCE SYSTEM

• Main Author: Dian Pratiwi, Anissa
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/55996
• Institution: Institut Teknologi Bandung

Dual system in building is one of the Seismic-Forced Resistance System (SFRS) that consists of a system that contributes to the stiffness of the structure and a system that contributes to the ductility of the structure. Combining both systems is expected to have a good performance in stiffness, strength, ductility, and energy dissipation. In this study, dual system in the form of SMF-CBF and SMF-EBF will be specially reviewed. Structural performance analysis will be carried out to evaluate the behaviour of structure and to compare the performance of both types of structures as SFRS. Both of dual systems will be designed with the same column and beam size without considering SNI to determine the element dimension. Analytical method that will be used are static analysis with pushover and dynamic analysis with non-linear time history. The research result showed that the bracing highly contributing to the stiffness and reducing the drift in the reviewed structures which had same column size. SMF had the greatest ductility and energy dissipation compared to the dual system. But its stiffness and strength is lower. Dual system (SMF-CBF and SMF-EBF) had almost equal level of stiffness, strength, ductility, and energy dissipation as single system (CBF and EBF). The existence of SMF in both dual systems did not represent significant contribution to yielding and energy dissipation. The same result is also showed in both dual system that meet the requirements of SNI for SFRS design in steel structure.