Nondestructive Dynamic Evaluation of a Concrete Reaction Wall—Numerical and Experimental Studies
Publication: Journal of Performance of Constructed Facilities
Volume 20, Issue 3
Abstract
Proper identification of the modes of vibration of a structure is crucial in order to avoid the condition of resonance under dynamic loading conditions. A combination of numerical simulation, physical experimentation, and waveform analysis was employed in order to obtain a dynamic evaluation of the reaction wall for the Network for Earthquake Engineering Simulation (NEES) large scale testing laboratory at Cornell University. The first four modes of vibration of the structure were identified, and this information is now available to researchers who design experiments that utilize the NEES facility. This paper presents the numerical (finite element) studies and a description of the impact test procedure used to excite and record the response of this massive, posttensioned, reinforced concrete structure. It also illustrates how numerical modeling aided in the design of experiments and how waveform analysis proved essential for the proper characterization of the dynamic behavior of this unusual structure.
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Acknowledgments
The writers would like to gratefully acknowledge Dr. Keith Kesner, NEES research associate and designer of the wall, Mr. Timothy Bond, manager of Cornell’s Civil Infrastructure Laboratory, Professor Harry Stewart, co-PI for the Cornell NEES project, and Mr. Brett Shelton, NEES Project Equipment Technician, for their help with the physical testing and data acquisition system. This work was funded in part by a grant from the Cornell College of Engineering Learning Initiatives for Future Engineers (LIFE), a program designed to provide research opportunities to undergraduates.
References
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Jones, S. L. et al. (2004). “Soil-structure interaction facility for lifeline Systems.” Proc., 13th World Conf. on Earthquake Engineering, Vancouver, B.C., Canada, Paper No. 1621.
Malhotra, V. M., and Carino, N. J. (2004). Handbook on nondestructive testing of concrete, 2nd Ed., CRC Press, Boca Raton, Fla. 14.1–34.
Sansalone, M. J., and Streett, W. B. (1997). Impact echo: Nondestructive evaluation of concrete and masonry, Bullbrier Press, Ithaca, N.Y., 31.
Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 20 • Issue 3 • August 2006
Pages: 237 - 243
Copyright
© 2006 ASCE.
History
Received: Mar 9, 2005
Accepted: Jun 24, 2005
Published online: Aug 1, 2006
Published in print: Aug 2006
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