A Method for Seeking the Domain of Chaboche Model of Cement Concrete Fatigue Damage under High Stress Ratio
In order to determine the domains of Chaboche model of cement concrete fatigue damage under high stress ratios, first, the probability densities of general monotonic random variables including cement concrete fatigue life are deduced. Then, the probability density of Chaboche fatigue damage model is deduced. By virtue of laboratory fatigue test results, the fatigue damage probability density functions of Chaboche model can be obtained, considering different stress ratios. Substituting load cycles into the functions, the cement concrete fatigue reliabilities based on Chaboche model can be acquired through integral operation. Finally, on the basis of cement concrete fatigue reliability analysis, the critical values of load cycle of Chaboche model under different high stress ratios can be made certain and the model's domains corresponding to these stress ratios can be obtained. The obtained results also show that under the same stress ratio, with the increase in the load cycle, the fatigue reliability declines gradually from almost 100% to 0%. No matter under any stress ratio, in the initial stage of load action, there is always a relatively stable phase for fatigue reliability. With the increase in the stress ratio, the phase diminishes gradually and the load cycle corresponding to reliability of 0% also decreases. In descent phase of reliability, the higher the stress ratio is, the lower cement concrete reliability is for the same load cycle.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784412671
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Supplemental Notes:
- © 2013 American Society of Civil Engineers.
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- Xue, Y Q
- Huang, X M
- Zhou, W
- Ma, T
- Qian, S Z
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Conference:
- Second International Conference on Sustainable Construction Materials: Design, Performance, and Application
- Location: Wuhan , China
- Date: 2012-10-18 to 2012-10-22
- Publication Date: 2013
Language
- English
Media Info
- Media Type: Web
- Pagination: pp 148-158
- Monograph Title: Sustainable Construction Materials 2012
Subject/Index Terms
- TRT Terms: Concrete; Fatigue (Mechanics); Mathematical models; Repeated loads; Stress ratio
- Subject Areas: Highways; Materials; I32: Concrete;
Filing Info
- Accession Number: 01524912
- Record Type: Publication
- ISBN: 9780784412671
- Files: TRIS, ASCE
- Created Date: May 12 2014 1:08PM