Near-fault Ground Motions With Prominent Acceleration Pulses: Pulse Characteristics and Ductility Demand

In the last 15 years, major earthquakes (e.g., Northridge 1994, Kobe 1995, and Chi-Chi 1999) have shown that many near-fault ground motions possess prominent acceleration pulses. Some of the prominent ground acceleration pulses are related to large ground velocity pulses, others are caused by mechanisms that are totally different from those causing the velocity pulses or fling steps. Various efforts to model acceleration pulses have been reported in the literature. In this paper, research results from a study of acceleration pulse prominent ground motions and an analysis of structural damage induced by acceleration pulses are summarized. Main results of the study include: 1) temporal characteristics of acceleration pulses; 2) ductility demand spectrum of simple acceleration pulses with respect to equivalent classes of dynamic systems and pulse characteristic parameters; and 3) estimation of fundamental period change under excitation of strong acceleration pulses. By using the acceleration pulse induced linear acceleration spectrum and the ductility demand spectrum, a simple procedure was developed to estimate the ductility demand and fundamental period change of a reinforced concrete structure under the impact of a strong acceleration pulse.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/16713664
• Authors:
  • Tong, Mai
  • Rzhevsky, Vladimir
  • Junwu, Dai
  • Lee, George C
  • Jincheng, Qi
  • Xiaozhai, Qi
• Publication Date: 2007-9

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 215-223
• Serial:
  • Earthquake Engineering and Engineering Vibration
  • Volume: 6
  • Issue Number: 3
  • Publisher: Springer
  • ISSN: 1671-3664
  • EISSN: 1993-503X
  • Serial URL: http://link.springer.com/journal/11803

Subject/Index Terms

• TRT Terms: Ductility; Earthquake engineering; Pulses; Reinforced concrete; Seismicity; Structural deterioration and defects; Structural mechanics
• Uncontrolled Terms: Acceleration pulse
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01082457
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 18 2007 11:28AM