Performance-based plastic design method for buckling-restrained braced frames

作者：Sahoo Dipti R; Chao Shih Ho^*

来源：Engineering Structures, 2010, 32(9): 2950-2958.

DOI：10.1016/j.engstruct.2010.05.014

• Buckling-restrained braced frames
• Performance-based design
• Seismic
• Yield mechanism
• Energy-work balance
• PBPD

This paper presents a performance-based plastic design (PBPD) methodology for the design of buckling-restrained braced frames (BRBFs). The design base shear is obtained based on energy-work balance using pre-selected target drift and yield mechanism. Three low-to-medium rise BRBFs (3-story, 6-story and 9-story) were designed by the proposed methodology and their seismic performance was evaluated through extensive nonlinear time-history analyses using forty ground motions representing the DBE and the MCE hazard levels. Both isotropic and kinematic hardening characteristics of buckling-restrained braces were considered in the modeling of their force-deformation behaviors. All BRBFs considered in this study reached the intended performance objectives in terms of yield mechanisms and target drift levels. Since PBPD is a direct design method, no iterations were carried out to achieve the performance objectives of BRBFs.

• 出版日期2010-9