Corrosion-fatigue life assessment of RC plate girder in heavy-haul railway under combined carbonation and train loads
Corrosion-fatigue life assessment of RC plate girder in heavy-haul railway under combined carbonation and train loads
复制标题
碳化和列车联合荷载作用下重载铁路RC板梁腐蚀疲劳寿命评估
DOI：
10.1016/j.ijfatigue.2021.106368
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发表时间：
2021-06-10
影响因子：
6
通讯作者：
Jiang, Lizhong
中科院分区：
文献类型：
--
作者：
Song, Li;Cui, Chenxing;Jiang, Lizhong
对钢筋混凝土板梁的疲劳性能进行了试验研究。提出了碳化和列车荷载共同作用下铁路钢筋混凝土梁的腐蚀疲劳寿命评估方法。将该方法应用于某既有重载铁路桥的8m跨度钢筋混凝土板梁，分析了年运量、列车轴重和碳化环境水平对腐蚀疲劳寿命的影响。结果表明，年运量、列车轴重和碳化环境水平对腐蚀疲劳寿命有显著影响，分别使剩余腐蚀疲劳寿命降低48.71%、91.11%和60.90%。
Fatigue performance of RC plate girder was experimentally investigated. A corrosion-fatigue life assessment approach of railway RC girders under combined carbonation and train loads was proposed. The proposed approach was applied to an 8 m-span RC plate girder in an existing heavy-haul railway bridge, and the effects of annual freight volume, train axle weight, and carbonation environment level on corrosion-fatigue life were analyzed. Results indicate that annual freight volume, train axle weight, and carbonation environment level have a significant impact on corrosion-fatigue life, which can decrease the remaining corrosion-fatigue life by up to 48.71%, 91.11%, and 60.90%, respectively.