Analysis of Eccentrycally Braced Frame (EBF) Structure with Self Centering System Modification
Masruri Anwar, Budi Suswanto
Basic Concepts for EBF Designs The strength and ductility of portal structures are designed with direct relation to the strengths and ductility of the links. For EBF design the energy dissipation of earthquakes occurs through plastic deformation in the link element during a major earthquake. However, plastic deformation of links may result in a framework in permanent structural failure conditions and difficult to repair after an earthquake occurs. An earthquake resisting structural system called a self-centering system is a system that uses a gap-opening behavior in selected critical joints between the major structural elements without overriding the energy dissipation on the element to provide nonlinear softening behavior, ductility, and energy dissipation without significant inelastic deformation resulting in damage to the corresponding major structural portion. Next the self-centering system will be combined with an eccentrically a gap-opening review will be conducted on the link element of the EBF structure. Added energy dissipation bar. earthquake. In this research SCEBF will be modeled with 3 types of link model that is short link, intermediate link and long link. By modeling the structure of the multi-story building with the number of 12 floors using SAP 2000 to get the feasibility of the earthquake resistant building structure and for the portal model using ABAQUS. The result of this research is the building structure using short links (short links) to give better response to the value drift and inter-floor intersections compared to intermediate links (intermediate links) as well as long links (long links). Portal structures using intermediate links (intermediate links) provide better response to hysteresis values than short links (short links) and long links (long links).
Keywords: eccentrically braced frame, self-centering, earthquake load, hysteresis loop
Edition: Volume 8 Issue 1, January 2019
Pages: 143 - 145