E-Defense

Funding: NSF RAPID for NEES & E-Defense Collaboration: E-Defense Shaking Table Tests of High Performance RC Buildings, PI J. Wallace, National Science Foundation - RAPID, CMMI-1000268; Joy Pauschke, Program Director

Phase I and II planning meetings for NEES/ E-Defense collaboration were held at NSF in January 2009 and at E-Defense in September 2009. At the first meeting, an overall theme of “Enabling the Earthquake Resilient City” was adopted and high priority research topics were identified. One of these high-priority topics involves studies of high-performance reinforced concrete structures. At the meeting in Japan, E-Defense staff and Japanese university researchers presented an aggressive research plan that includes testing of two low-rise, large-scale, buildings, one “conventional and one “innovative”, on the E-Defense shake table in October 2010.

To meet this aggressive schedule, initial schematic and detailed design of the specimen must be completed by mid October 2009 and February 2010, respectively, final (bid) and drawings must be prepared by April 2010. Specimen construction and instrumentation is expected to occur over the summer of 2010 to enable October 2010 testing. Given the NEESR funding cycle (proposals due at the end of March 2010) with decisions likely late in the summer 2010, insufficient time exists for US researchers to participate in and influence the October 2010 tests.

Funding: NSF RAPID for NEES & E-Defense Collaboration: U.S. Instrumentation and Data Processing for the Four-Story Reinforced Concrete and Post-Tensioned E-Defense Building Tests, PI J. Wallace, National Science Foundation, CMMI-1110860; Joy Pauschke, Program Director

Over the past two years, numerous US-Japan meetings have been held between NEES and E-Defense researchers to identify areas of mutual interest and potential collaboration. One area where there has been a strong desire to collaborate has been on the behavior of both conventional and high-performance reinforced concrete buildings. At the planning meeting held at held at E-Defense in September 2009, the E-Defense staff and Japanese university researchers presented an aggressive research plan that includes testing of two 4-story, full-scale buildings on the E-Defense shake table. Since this plan was unveiled, there has been a flurry of activity and meetings to discuss the design, instrumentation, and testing of these buildings. The final designs for the two buildings have been modified by Japanese researchers based on input from US researchers. Each of these buildings represents a multi-million dollar test and we do not have the facilities to do such tests in the US. The two buildings, to be tested side-by-side in mid-December 2010, are of tremendous interest to the US earthquake engineering community.

The objective of the proposed research is for US researchers to provide additional sensors for E-Defense to use to enable measurement of more detailed response information during the tests. The US will provide sensors, cables, and data acquisition systems (DAS) to E-Defense; E-Defense staff will supervise the installation of the sensor mounts, sensors, and cables. US researchers will work with E-Defense staff to ensure proper system operation prior to the test.


Four-story reinforced concrete building


PI John Wallace and UCLA staff along with Prof. Toshimi Kabeyasawa, University of Tokyo

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