Parametric Study Of Friction Damped Braced Frames With Buckling Restrained Columns Using Recommended Frame And Brc Strength Factors
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Parametric Study of Friction-Damped Braced Frames with Buckling-Restrained Columns Using Recommended Frame and BRC Strength Factors
The friction-damped braced frame system with buckling restrained columns (FDBF-BRC) is being developed to provide significant drift capacity while limiting damage due to residual drift and soft-story mechanisms. BRCs will be on both ends of the frame, where they will experience tension and compression due to conditioned earthquake simulations on OPENSEES. This research is a continuation of previous work by Dr. David A. Roke's previous graduate student, Dr. Felix C. Blebo, for multiple stories, based on the established design recommendations. This study includes buildings with 4, 6, and 8 stories, with application of recommended frame hardening factor and BRC hardening factor. This system consists of beams, columns, braces interlocking at a central column, a pinned support condition, and BRCs at both external columns of first story. Energy dissipation to minimize overall seismic response on each floor level are products of the incorporated BRCs and friction generated at the lateral-load bearings. A suite of 20 DBE, 20 MCE, and 20 FOE-level ground motions is numerically applied to several FDBF-BRCs. Based on dynamic analysis results, the FDBF-BRC still proves to be an effective seismic-resistant system. The system's performance shows a nearly uniform inter-story drift response, high ductility, and high energy dissipation capacity.
Structural Motion Engineering
This innovative volume provides a systematic treatment of the basic concepts and computational procedures for structural motion design and engineering for civil installations. The authors illustrate the application of motion control to a wide spectrum of buildings through many examples. Topics covered include optimal stiffness distributions for building-type structures, the role of damping in controlling motion, tuned mass dampers, base isolation systems, linear control, and nonlinear control. The book's primary objective the satisfaction of motion-related design requirements such as restrictions on displacement and acceleration and seeks the optimal deployment of material stiffness and motion control devices to achieve these design targets as well as satisfy constraints on strength. The book is ideal for practicing engineers and graduate students.