Performance-based seismic design of multistory frame structures equipped with crescent-shaped brace

• DOI: 10.1002/stc.2079
• Publication Date: 2017-08-04T11:39:12Z
• Authors: Omar Kammouh; Stefano Silvestri; Michele Palermo; Gian Paolo Cimellaro
• Keywords: EC; H2020; Building and Construction; 02 engineering and technology; crescent-shaped brace; design method; dynamic analysis; performance-based seismic design; Civil and Structural Engineering; Building and Construction; Mechanics of Materials; 0201 civil engineering; Starting Grant; Mechanics of Materials; Crescent-shaped brace; Design method; Dynamic analysis; Performance-based seismic design; Civil and Structural Engineering; Building and Construction; Mechanics of Materials; European Commission; European Research Council; Civil and Structural Engineering

The primary objective of the "performance-based seismic design" is to provide stipulated performances for building structures. However, a certain degree design freedom needed matching specific response. This not obtainable by conventional lateral resisting systems because their stiffness and strength are coupled. Here, we put emphasis on role unconventional in adding more flexibility design. In this paper, seek explore moment-resisting frame structures equipped with an innovative hysteretic device, known as "crescent-shaped brace." One conspicuous feature device its distinctive geometrical configuration, which responsible enhanced nonlinear force-displacement behavior exhibited device. A new performance-based approach crescent-shaped brace proposed. performance evaluated, application multistory shear-type investigated. Two case studies were established illustrate methodology. first two-story RC structure, second existing three-story structure. Nonlinear time history pushover analyses performed evaluate controlled show that each two studies, acceleration–displacement capacity spectrum conforms objectives curve. finding confirms validity proposed effectiveness forces.