FATIGUE LIFE PREDICTION AND MAINTAINANCE MANAGEMENT OF STEEL STRUCTURES SUBJECTED TO CORROSION

2021 ◽  
pp. 1-14
Author(s):  
Le Li ◽  
Mojtaba Mahmoodian
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
Steel Structures ◽  
Fatigue Life Prediction

Bi-Probability Fatigue Life Prediction for Bridge Crane Structures

2012 ◽  
Vol 482-484 ◽  
pp. 736-740
Author(s):  
Xiao Mei ◽  
Da Shan Dong ◽  
Yuan Yuan Teng
Keyword(s):  
Fatigue Life ◽  
Life Prediction ◽  
Prediction Method ◽  
Steel Structures ◽  
Fatigue Life Prediction ◽  
Bridge Crane ◽  
Stress Cycle ◽  
Damage Theory ◽  
Rainflow Counting ◽  
Position Probability

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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