Fatigue Test and Research on Tubular Joints of Concrete-Filled Steel Tube

Abstract:

For the further study on stress concentration and fatigue property of tubular joints of concrete-filled steel, we designed the fatigue test on tubular joints of concrete-filled steel.Associating with the calculation of finite element, we studied the stress concentration, cracking source of fatigue, and fatigue -related rules including cracking expansion. I did the equivalent calculating under variable amplitude loading. We proposed the criterion of fatigue failure when surface length of penetrated crack is about 3 times as the thickness of the wall. According to the experiment we verified that the tubular joints under the amplitude load this criterion is reasonable, secure and feasible.

• Periodical: Advanced Materials Research (Volumes 368-373)
• Pages: 373-376
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.368-373.373
• Online since: October 2011
• Authors: Yan Diao
• Keywords: Fatigue Life, Fatigue Test, Finite Element, Judge Rules, Tubular Joints

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