Bi-Probability Fatigue Life Prediction for Bridge Crane Structures

Xiao Mei; Da Shan Dong; Yuan Yuan Teng

doi:10.4028/www.scientific.net/AMR.482-484.736

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 482-484Bi-Probability Fatigue Life Prediction for Bridge...

Bi-Probability Fatigue Life Prediction for Bridge Crane Structures

Abstract:

Fatigue crack is very dangerous for safely operating of steel structures. To estimate precisely fatigue life of bridge cranes, the randomness of lifted load and trolley’s position should be considered. Therefore, bi-probability fatigue life prediction method, namely load and position probability, is put forward based on the miner linear cumulative damage theory. Stress cycle spectrum is constructed based on real-time monitoring data by rainflow counting method. This method can successfully explain the existence of girder cracks in a typical bridge crane RMG, so it would provide valuable reference for maintenance decision of in-service cranes.

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Periodical:

Advanced Materials Research (Volumes 482-484)

Pages:

736-740

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.482-484.736

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Online since:

February 2012

Authors:

Xiao Mei, Da Shan Dong, Yuan Yuan Teng

Keywords:

Bi-Probability, Bridge Crane, Cumulative Damage Theory, Fatigue Life Prediction

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References

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