Strongback System: A Way to Reduce Damage Concentration in Steel-Braced Frames

Autor:	Jiun-Wei Lai, Stephen A. Mahin
Rok vydání:	2015
Předmět:	Engineering business.industry Mechanical Engineering Structural system Building and Construction Structural engineering Concentric System a Seismic analysis Nonlinear system Mechanics of Materials Hybrid system General Materials Science Braced frame business Civil and Structural Engineering
Zdroj:	Journal of Structural Engineering. 141
ISSN:	1943-541X 0733-9445
DOI:	10.1061/(asce)st.1943-541x.0001198
Popis:	This paper examines a newly developed seismic force-resisting system: the strongback system (SBS). To achieve improved seismic performance, this system combines aspects of a traditional concentric braced frame with a mast to form a hybrid system. The mast acts like a strong back to help resist the tendency of concentric braced frames to concentrate damage in one or a few stories during severe seismic excitations. The purpose of the strongback system is to promote uniform story drifts over the height of a structure. Three SBS prototypes were designed and analyzed considering a variety of earthquake excitations. Computed responses are compared with responses for three other braced frame systems. Results of quasi-static inelastic analyses, both monotonic and cyclic, are presented to demonstrate differences in the fundamental hysteretic behavior of the braced frame systems considered. A series of nonlinear dynamic response history analyses were then performed to compare the global and local dynamic re...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a3f8e9122064803ca161e93c8250c4dd https://doi.org/10.1061/(asce)st.1943-541x.0001198 Zobrazit plný text záznamu