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Title: Experimental assessment of damping in low aspect ratio, reinforced concrete shear wall structure

Abstract

This report summarizes the experimental data obtained from the Seismic Category 1 Structures Program concerning damping in low aspect ratio, reinforced concrete shear wall structures. This program, that is sponsored by the United States Nuclear Regulating Research, has tested 37 shear wall structures and structures and structural elements both statically (monotonic and cyclic) and dynamically (sine sweep, random, simulated seismic, and impulse). Data from these tests have been analyzed by four different methods to determine equivalent viscous damping ration that can be used in the analysis of shear wall structures. These methods are: (1) frequency response function analysis, (2) the log decrement method, (3) the hysteretic energy loss method, and (4) the flow response spectra matching method. The floor response spectra matching method is, to the author's knowledge, new and provides the most general method for assessing a variety of damping mechanisms. Results from the various methods were generally consistent and the damping values were found to be in the range specified by current regulatory guides. A discussion of the various damping mechanisms, how damping mechanisms affect the equations of motion, the effects of the type of loading on the various methods used to determine the damping, and other investigators'more » results are also presented. 22 refs., 15 figs., 11 tabs.« less

Authors:
;
Publication Date:
Research Org.:
US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Div. of Engineering; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
6909952
Report Number(s):
NUREG/CR-5154; LA-11325-MS
ON: TI88015465
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; WALLS; SEISMIC EFFECTS; ASPECT RATIO; CONCRETES; DAMPING; EXPERIMENTAL DATA; SHEAR; TESTING; BUILDING MATERIALS; DATA; INFORMATION; MATERIALS; NUMERICAL DATA; 420200* - Engineering- Facilities, Equipment, & Techniques; 220900 - Nuclear Reactor Technology- Reactor Safety

Citation Formats

Farrar, C. R., and Bennet, J. G. Experimental assessment of damping in low aspect ratio, reinforced concrete shear wall structure. United States: N. p., 1988. Web. doi:10.2172/6909952.
Farrar, C. R., & Bennet, J. G. Experimental assessment of damping in low aspect ratio, reinforced concrete shear wall structure. United States. https://doi.org/10.2172/6909952
Farrar, C. R., and Bennet, J. G. 1988. "Experimental assessment of damping in low aspect ratio, reinforced concrete shear wall structure". United States. https://doi.org/10.2172/6909952. https://www.osti.gov/servlets/purl/6909952.
@article{osti_6909952,
title = {Experimental assessment of damping in low aspect ratio, reinforced concrete shear wall structure},
author = {Farrar, C. R. and Bennet, J. G.},
abstractNote = {This report summarizes the experimental data obtained from the Seismic Category 1 Structures Program concerning damping in low aspect ratio, reinforced concrete shear wall structures. This program, that is sponsored by the United States Nuclear Regulating Research, has tested 37 shear wall structures and structures and structural elements both statically (monotonic and cyclic) and dynamically (sine sweep, random, simulated seismic, and impulse). Data from these tests have been analyzed by four different methods to determine equivalent viscous damping ration that can be used in the analysis of shear wall structures. These methods are: (1) frequency response function analysis, (2) the log decrement method, (3) the hysteretic energy loss method, and (4) the flow response spectra matching method. The floor response spectra matching method is, to the author's knowledge, new and provides the most general method for assessing a variety of damping mechanisms. Results from the various methods were generally consistent and the damping values were found to be in the range specified by current regulatory guides. A discussion of the various damping mechanisms, how damping mechanisms affect the equations of motion, the effects of the type of loading on the various methods used to determine the damping, and other investigators' results are also presented. 22 refs., 15 figs., 11 tabs.},
doi = {10.2172/6909952},
url = {https://www.osti.gov/biblio/6909952}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Aug 01 00:00:00 EDT 1988},
month = {Mon Aug 01 00:00:00 EDT 1988}
}