Seismic Design of Multi-story Buildings with Metallic Structural Fuses
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Abstract
Seismic design relies on inelastic deformations through hysteretic behavior. However, this translates into damage on structural elements, permanent system deformations following an earthquake, and possibly high cost for repairs. An alternative design approach is to concentrate damage on disposable and easy to repair structural elements, while the main structure is designed to remain elastic or with minor inelastic deformations. A systematic procedure is proposed in this paper to design buildings with metallic structural fuses. This design procedure for MDOF structures relies on results of a parametric study, considering the behavior of nonlinear SDOF systems subjected to synthetic ground motions. The proposed procedure has also been illustrated as examples of application using Buckling-restrained braces working as metallic structural fuses
Description
Seismic design relies on inelastic deformations through hysteretic behavior. However, this translates into damage on structural elements, permanent system deformations following an earthquake, and possibly high cost for repairs. An alternative design approach is to concentrate damage on disposable and easy to repair structural elements, while the main structure is designed to remain elastic or with minor inelastic deformations. A systematic procedure is proposed in this paper to design buildings with metallic structural fuses. This design procedure for MDOF structures relies on results of a parametric study, considering the behavior of nonlinear SDOF systems subjected to synthetic ground motions. The proposed procedure has also been illustrated as examples of application using Buckling-restrained braces working as metallic structural fuses
Keywords
Passive energy devices (PED), Structural performance, Seismic damage, Metallic dampers, Structural fuses (SF), Elasticity, Seismic performance, Retrofitting, Buckling-restrained braces (BRB), Triangular added damping and stiffness (T-ADAS), Shear panels (SP), Single degree of freedom (SDOF) systems, Multidegree of freedom (MDOF) systems, Floor demands velocities, Accelerations, Nonstructural damage, Shaking table tests, Moment-resisting connections, Seismic isolation, Ball-in-cone (BNC) system, Pin connections, Passive energy devices (PED), Structural performance, Seismic damage, Metallic dampers, Structural fuses (SF), Elasticity, Seismic performance, Retrofitting, Buckling-restrained braces (BRB), Triangular added damping and stiffness (T-ADAS), Shear panels (SP), Single degree of freedom (SDOF) systems, Multidegree of freedom (MDOF) systems, Floor demands velocities, Accelerations, Nonstructural damage, Shaking table tests, Moment-resisting connections, Seismic isolation, Ball-in-cone (BNC) system, Pin connections