Rapid Retrofitting Techniques for Induced Earthquakes

April 30, 2020 1:00 pm

In this quarterly Research Seminar, Scott Harvey, Ph.D., P.E., Principal Investigator; and Sumangali Sivakumaran, M.S. Student, present work under the ABC-UTC research project entitled Rapid Retrofitting Techniques for Induced Earthquakes conducted at the University of Oklahoma.

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Description: In recent years, a dramatic increase in the number of earthquakes in the central U.S. has occurred due to induced seismicity. In this seminar, a framework for assessing the potential for cumulative damage on bridges due to a large number of small-to-moderate induced earthquakes is presented. The method is based on rainflow counting per the American Society for Testing and Materials (ASTM) standard practice for cycle counting in fatigue. A quantitative measure – Fatigue Damage Index (FDI) – is proposed and developed using Miner’s Rule to identify the accumulated damage in the bridge, from which the remaining service life can be estimated. The FDI can also be used to predict when accelerated repairs may be required and to evaluate accelerated retrofit solutions.

Presenters:

 

 

Scott Harvey, Ph.D., P.E.
Principal Investigator
School of Civil Engineering and Environmental Science
University of Oklahoma

 

 Sumangali Sivakumaran, M.S. Student
(M.S., December 2019)
School of Civil Engineering and Environmental Science
University of Oklahoma

Presentation Graphics:

Figure 1. Number of earthquakes with a magnitude 3.0 or larger in the central United States

Figure 2. Fatigue Damage Index (FDI) framework for assessing for cumulative damage

Figure 3. ABC-UTC Guide for Assessing the Effects of Frequency, Low-Level Seismic Events

Question & Answer Period: Submit your questions when you register for the seminar and also in the question box during the seminar. (15 minutes)

Certificate of Attendance: Each site registered for this seminar will receive an email for your response. Just click the first link in the email to obtain a certificate. For multiple participants at a site, the point-of-contact registrant for that site also clicks the second link in the email, logs in, and clicks “Attendees” to provide first name, last name, and email address for each participant at that site; each participant will then receive an automatic email with link to print an individual certificate. Accessing the second link in the email will also allow participants to print certificates for past seminars that were attended by simply clicking the seminar title. Please let Dr. David Garber at FIU know if you have questions or need assistance with receiving your certificate. David’s email address is dgarber@fiu.edu.

For more information: Please contact us by sending an email to abc@fiu.edu.