Constant Ductility Energy Factors for the Near-Fault Pulse-Like Ground Motions

Abstract

This study is focused on the constant ductility energy factors for bilinear system under the near-fault pulse-like ground motions. The variation of energy factors is studied in consideration of the earthquake magnitude, rupture distance, damping ratios, and post-yield stiffness ratios. The results indicate that the near-fault pulse-like ground motions would increase the energy dissipation of structures. The energy factors are significantly influenced by the earthquake magnitude. The damping ratios have more obvious influences on the energy factors than the post-yield stiffness ratios. A predictive model is proposed for the application of constant ductility energy factors for near-fault pulse-like ground motions.

Keywords:

• Energy Factors
• Near-Fault Pulse-Like Ground Motions
• Earthquake Magnitude
• Rupture Distance
• Damping Ratios

Funding

This investigation is supported by the National Natural Science Foundation of China (No. 51322801 51238012 and 91215301), the Program for International Science and Technology Cooperation Projects of China (No. 2012DFA70810), the Program for New Century Excellent Talents in University of Ministry of Education of China (No. NCET-11-08), the National Science and Technology Major Project (2013zx06002001-09), and Shenzhen Science and Technology Planning Program (No. JCYJ20140417172417171). These supports are greatly appreciated.

Additional information

Funding

This investigation is supported by the National Natural Science Foundation of China (No. 51322801 51238012 and 91215301), the Program for International Science and Technology Cooperation Projects of China (No. 2012DFA70810), the Program for New Century Excellent Talents in University of Ministry of Education of China (No. NCET-11-08), the National Science and Technology Major Project (2013zx06002001-09), and Shenzhen Science and Technology Planning Program (No. JCYJ20140417172417171). These supports are greatly appreciated.