冬夏两季随机车流下正交异性钢桥面板构造细节疲劳效应对比研究

袁涛; 张琳; 屈良宽; 祝志文; 王刚巧

doi:10.13206/j.gjgS25051101

冬夏两季随机车流下正交异性钢桥面板构造细节疲劳效应对比研究

doi: 10.13206/j.gjgS25051101

1. 湖南铁道职业技术学院, 轨道车辆旋转零部件精密制造技术湖南省工程研究中心, 湖南株洲 412001;
2. 中铁二院工程集团有限责任公司, 成都 610031;
3. 汕头大学土木与智慧建造工程系, 广东汕头 515063

基金项目:

广东省自然科学基金面上项目（2022A1515010261）。

详细信息

作者简介:
袁涛，博士，正高级工程师，主要从事大跨度桥梁钢结构关键技术研究，yt.zc@163.com。

通讯作者:
祝志文，博士，教授，主要从事大跨度桥梁钢结构关键技术研究与教育管理，zhuzw@stu.edu.cn。

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出版历程
- 收稿日期: 2025-05-11
- 网络出版日期: 2025-11-29

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

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

摘要

摘要: 为了获得大跨度钢结构桥梁环氧铺装正交异性钢桥面板（Orthotropic Steel Deck， OSD）的构造细节在冬季、夏季实测疲劳寿命，基于现场实测开展了随机车流作用下环氧铺装OSD构造细节（纵肋-顶板、纵肋-横隔板、弧形切口）的疲劳寿命评价研究。结果表明：在夏季，由于桥面抗弯刚度的降低，所有构造细节的应力水平和加载频率均较冬季有显著增加，尤其是纵肋-顶板（RD）构造细节的变化最为显著。该构造细节在夏季的疲劳寿命显著缩短至38.7 a，与冬季相比，后者表现出几乎无限的疲劳寿命。在纵肋-横隔板（RF）焊缝构造细节中，围焊侧（RF-W）的疲劳性能表现最差，冬、夏季寿命分别为61.0 a和38.1 a，均不满足100 a设计寿命要求；横隔板侧（RF-F）构造细节在冬、夏季的疲劳寿命均超过100 a；而纵肋侧（RF-R）构造细节在两季均表现为无限疲劳寿命。弧形切口（Cutout）构造细节冬季为无限寿命，夏季降至65.5 a。基于现场监测结果进行的疲劳寿命评价可为疲劳寿命相关研究及同类新建桥面的选择与管养提供依据参考。
- 疲劳寿命 /
- 实测应力 /
- 环氧铺装 /
- 正交异性钢桥面板 /
- 随机车流
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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参考文献(18)

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