A Simplified Framework for Seismic Fragility Assessment of Reinforced Concrete Columns under Different Failure Patterns

ABSTRACT

A simplified framework is proposed in this study to assess the seismic fragility curves of reinforced concrete (RC) columns under different failure patterns in a unified manner. Within this framework, RC columns are simulated by an equivalent single-degree-of-freedom system, where a quasi-static experimental database is compiled to calibrate the seismic demand model and identify the limit state capacity. By comparing the seismic demand model with the limit state capacity, the seismic fragility curves of RC columns under different failure patterns are generated accordingly. Finally, empirical equations are proposed to predict the seismic fragility parameters for engineering applications.

KEYWORDS:

• Reinforced concrete columns
• failure patterns
• experimental data
• limit state capacity
• seismic fragility curves

Acknowledgments

The financial supports received from the National Science Foundation of China (Grant No. 51808397 and No. 51708460) are gratefully appreciated.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [51708460, 51808397].