NUMERICAL STUDY ON STRUCTURE WITH CORE FRAME USING COUPLING BEAM AND REPLACEABLE LINK

• Main Author: Rama, Indi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/51462
• Institution: Institut Teknologi Bandung

The earthquake-resistant steel frame structure with a core frame using a coupling beam and replaceable link has a link to connect the coupling beam and is planned as an earthquake energy dissipation element through a yielding mechanism. The yielding mechanism can be a shear or bending that occurs only on the link while other elements are elastic. After the earthquake, the structure can be repaired by replacing the link only. This concept is called a replaceable link. Numerical studies were conducted on PERFORM-3D to learn the structural performance of stiffness, ductility, energy dissipation, and the yielding mechanism. This structure is analyzed by varying links against web thickening, flange thickening, and length addition. This structure is compared with similar structures without links as a benchmark. Based on the results of the analysis conducted, web thickening on shear links and flange thickening on flexural links increase the energy dissipation and the inelastic stiffness of the structure. Meanwhile, The length addition on the links increase structural ductility and energy dissipation. But, the length addition on the links reduce the stiffness of the structure. The structure with the replaceable link concept using shear links has a better performance than using flexural links. The base shear ratio of the structure with the shear links element as an earthquake energy dissipation element to the benchmark structure can reach 95%, while the ductility and energy dissipation are better than the benchmark structure.