Early Observations from the NEES TIPS/E-Defense Tests of Innovative Seismic Isolation Solutions

Webcast Lecture by Professor Keri Ryan

A five story steel moment frame building was tested at E-Defense in August of 2011 in 3 different configurations: 1) supported by a triple pendulum isolation system, 2) supported by a lead rubber bearing and cross linear bearing isolation system, and 3) in the fixed-base condition. A key objective of the test was to demonstrate the damage free response of the isolated building under very large ground motions. To this end, nonstructural components and contents were installed on the 4th and 5th floors. In the isolation configurations, the specimen was subjected to many strong excitations designed to approach the displacement limit of the devices.

In this seminar Assistant Professor Ryan from University of Nevada, Reno will discuss the test objectives, the design of the isolation systems, and the nonstructural components and contents that were installed to the specimen. An overview of the 6-day test program and the response evaluation strategy will be given.  Key test results will be highlighted along with a preliminary assessment of what happened.
Watch this presentation on PEER’s YouTube Account!

Date: Monday, October 24, 2011
Location: UC Berkeley, Davis Hall, Room 502
Time: 12:10 pm – 1:00 pm

How can I attend this seminar?

  1. - Attend in person at Room 502, Fifth Floor, Davis Hall, UC Berkeley. Directions to Davis Hall
  2. - Watch remotely via Webcast live at 12:10 pm on October 24, 2011 at:
  3. - A video of this presentation has been archived on PEER’s YouTube Account for viewing after the event.

The symposium is being organized by the PEER Center and the Structural Engineering, Mechanics, and Materials (SEMM) Program in UC Berkeley Department of Civil and Environmental Engineering.  

Download the abstract for this lecture (pdf file – 60 KB)