风-车流耦合作用下悬索桥吊索钢丝的双蚀坑损伤演化及疲劳寿命研究

何训, 吴梦雪, 尹力, 朱金

Damage Evolution and Fatigue Life of Steel Wire with Double Corrosion Pits for Suspension Bridge under Wind- and Traffic-loads

HE Xun, WU Mengxue, YIN Li, ZHU Jin

表1 一天之内吊索S1、S19、S36在不同风速、车流工况下应力数据统计[19]

Table 1 Stress data of the suspenders S1, S19 and S36 under different wind speed and traffic flow conditions in one day[19]

Traffic flow um/s Equivalent stress range values / MPa Numbers of stress cycles S1 S19 S36 S1 S19 S36 No flow 10.5 7.71 4.06 4.19 10080 3312 5904 13.5 10.78 5.50 5.59 11952 8064 12240 16.5 15.28 7.37 8.67 14256 10368 14544 20.0 15.79 7.79 9.46 17424 117280 18144 Free flow 10.5 12.25 13.65 14.91 8352 8928 10224 13.5 13.07 13.42 14.89 11952 11664 12528 16.5 15.87 13.60 16.25 13824 13536 15408 20.0 17.19 13.37 14.44 16992 19008 18288 Busy flow 10.5 14.96 11.89 13.06 9936 14400 18288 13.5 15.76 11.85 13.73 11952 16848 19872 16.5 17.33 12.84 14.95 13680 16704 19728 20.0 18.39 12.86 15.68 17136 19440 21024