Performance-Based Seismic Design of RC Moment Resisting Frames with Friction-Damped Self-Centering Tension Braces

ABSTRACT

This paper presents a performance-based seismic design method of RC moment resisting frame with friction damped self-centering tension braces (FSTB-Frame). The structural configuration and theoretical model of FSTB is introduced, and the numerical model of FSTB is established and validated through cyclic loading tests of a FSTB specimen. Based on the equivalent linear method, the seismic design procedure is developed and verified through 3-, 6-, 9-, and 12-story structures with different design performance objectives. Numerical models of FSTB-frames are established and used to verify whether the design performance targets are achieved through nonlinear dynamic analyses using the design-basis earthquake (DBE) ground motions. The research results show FSTB-frames can achieve the intended performance levels in terms of story drift, residual story drift and base shear, and the maximum and residual story drift of RC frames can be significantly decreased after equipping FSTBs.

KEYWORDS:

• Self-centering
• friction
• tension brace
• seismic performance
• seismic design
• RC moment resisting frame

Acknowledgments

The authors gratefully acknowledge the Ministry of Science and Technology of the People's Republic of China (No. 2018YFE0206100), the Program of National Natural Science Foundation (No. 51508251), the Natural science fund for colleges and universities in Jiangsu Province (No. 15KJB560005) and the Jinling Institute of Technology High-level Personnel Work Activation Fee to Fund Projects (No. jit-b-201614).

Additional information

Funding

This work was supported by The Ministry of Science and Technology of the People’s Republic of China [No. 2018YFE0206100]; The Natural science fund for colleges and universities in Jiangsu Province [No. 15KJB560005]; The Jinling Institute of Technology High-level Personnel Work Activation Fee to Fund Projects [No. jit-b-201614]; The Program of National Natural Science Foundation [No. 51508251].