FRACTURE MECHANICS ANALYSIS OF STEEL STRUCTURES WITH FATIGUE DAMAGES STRENGTHENED BY CFRP

Zheng Yun; Ye Lieping; Yue Qingrui

doi:10.13204/j.gyjz200510024

Volume 35 Issue 10

Dec. 2014

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Zheng Yun, Ye Lieping, Yue Qingrui. FRACTURE MECHANICS ANALYSIS OF STEEL STRUCTURES WITH FATIGUE DAMAGES STRENGTHENED BY CFRP[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(10): 79-82. doi: 10.13204/j.gyjz200510024

Citation:

Zheng Yun, Ye Lieping, Yue Qingrui. FRACTURE MECHANICS ANALYSIS OF STEEL STRUCTURES WITH FATIGUE DAMAGES STRENGTHENED BY CFRP[J]. INDUSTRIAL CONSTRUCTION, 2005, 35(10): 79-82. doi: 10.13204/j.gyjz200510024

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FRACTURE MECHANICS ANALYSIS OF STEEL STRUCTURES WITH FATIGUE DAMAGES STRENGTHENED BY CFRP

doi: 10.13204/j.gyjz200510024

1.
1. Department of Civil Engineering,Tsinghua University Beijing 100084;
2.
2. National Engineering Research Center for Diagnosis and Rehabilitation of Industrial Buildings Beijing 100088

Received Date: 2004-12-20
Publish Date: 2005-10-20

Abstract

Abstract

There are defects and fatigue damages with different degrees in metal structures,particularly the in-service steel structures subjected to repeated loads.Many advantages can be got by gluing CFRP to the damaged positions of a steel structure.It is conducted a theoretical analysis of improving the residual fatigue life of a steel plate with central fatigue damage cracks,which is strengthened by CFRP.The stress intensity factor of the crack tip is calculated by a FEM model,based on the theory of linear elastic fracture mechanics;and the residual fatigue life of a steel plate with fatigue damages before and after strengthening is also computed according to Paris-Erdogan crack propagation model,by which the validity of the method is verfied.
- CFRP,
- steel structure,
- strengthening,
- crack,
- residual fatigue life,
- linear elastic facture mechanics,
- stress intensity factor

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References(17)

References

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