Comparative Study on Fatigue Effects of Structural Details in Orthotropic Steel Decks Under Random Traffic Flow in Winter and Summer

Yuan Tao; Zhang Lin; Qu Liangkuan; Zhu Zhiwen; Wang Gangqiao

doi:10.13206/j.gjgS25051101

Volume 40 Issue 10

Oct. 2025

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Yuan Tao, Zhang Lin, Qu Liangkuan, Zhu Zhiwen, Wang Gangqiao. Comparative Study on Fatigue Effects of Structural Details in Orthotropic Steel Decks Under Random Traffic Flow in Winter and Summer[J]. STEEL CONSTRUCTION(Chinese & English), 2025, 40(10): 1-9. doi: 10.13206/j.gjgS25051101

Citation:

Yuan Tao, Zhang Lin, Qu Liangkuan, Zhu Zhiwen, Wang Gangqiao. Comparative Study on Fatigue Effects of Structural Details in Orthotropic Steel Decks Under Random Traffic Flow in Winter and Summer[J]. STEEL CONSTRUCTION(Chinese & English), 2025, 40(10): 1-9. doi: 10.13206/j.gjgS25051101

Citation:

Yuan Tao, Zhang Lin, Qu Liangkuan, Zhu Zhiwen, Wang Gangqiao. Comparative Study on Fatigue Effects of Structural Details in Orthotropic Steel Decks Under Random Traffic Flow in Winter and Summer[J]. STEEL CONSTRUCTION(Chinese & English), 2025, 40(10): 1-9. doi: 10.13206/j.gjgS25051101

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Comparative Study on Fatigue Effects of Structural Details in Orthotropic Steel Decks Under Random Traffic Flow in Winter and Summer

doi: 10.13206/j.gjgS25051101

1. Hunan Engineering Research Center of Precision Manufacturing Technology for Rotating Components of Railway Vehicles, Hunan Railway Professional Technology College, Zhuzhou 412001, China;
2. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China;
3. Department of Civil Engineering and Smart Cities, Shantou University, Shantou 515063, China

Received Date: 2025-05-11
Available Online: 2025-11-29

Abstract

Abstract

To determine the field-measured fatigue life of orthotropic steel deck （OSD） details with epoxy asphalt pavement in long-span steel bridges during in-service winter and summer seasons， this study conducted an evaluation of the fatigue life of critical OSD details （rib-to-deck， rib-to-floor beam， and cutout details） under random traffic loads based on field monitoring data. The results demonstrated that reduced deck bending stiffness in summer leads to significantly higher stress levels and a greater number of loading cycles for all details compared to the those in winter conditions. The rib-to-deck （RD） detail shows the most pronounced seasonal variation. Its fatigue life in summer is reduced to merely 38.7 years， substantially shorter than the infinite life observed in winter. Among the rib-to-floor beam （RF） welded details， RF-W exhibits the poorest fatigue performance， with a winter life of 61.5 years and a summer life of 38.1 years. Both values fail to meet the 100-year design requirement. While the RF-F detail exceeds a 100-year life in both seasons， the RF-R detail maintains an infinite fatigue life year-round. The cutout detail transitions from infinite life in winter to 65.5 years in summer. The fatigue life assessment based on field monitoring results provides valuable references for related research and offers guidance for the selection and maintenance of similar new bridge decks.
- fatigue life,
- measured stress,
- epoxy asphalt pavement,
- orthotropic bridge deck,
- random traffic flow

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References(18)

References

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