考虑风速风向分布的干煤棚结构风振疲劳分析

黄铭枫,叶何凯,楼文娟,孙轩涛,叶建云

Wind-induced vibration and fatigue analysis of long span lattice structures considering distribution of wind speed and direction

Ming-feng HUANG,He-kai YE,Wen-juan LOU,Xuan-tao SUN,Jian-yun YE

表 1 各风向角下应力幅最大的10根杆件疲劳损伤

Tab.1 Accumulated fatigue damage results of 10 members at different wind angles

10−8 θs/(°) 杆件1 杆件2 杆件3 杆件4 杆件5 杆件6 杆件7 杆件8 杆件9 杆件10 0 0.02 0.02 0.02 0.02 0.01 0.01 0.01 0.01 0.01 0.01 10 0.72 0.57 0.56 0.42 0.23 0.19 0.16 0.13 0.07 0.03 20 6.54 5.72 5.04 4.77 4.13 2.63 1.60 1.45 1.17 0.89 30 12.48 11.45 10.09 9.30 9.05 6.30 5.11 3.31 3.07 2.72 40 27.28 25.82 24.02 21.73 21.60 15.95 14.74 13.56 12.51 11.06 50 30.44 29.19 17.23 15.05 12.66 8.61 6.50 6.46 5.14 4.36 60 45.67 39.23 33.83 33.06 27.57 18.70 15.57 15.40 14.84 11.26 70 12.52 10.77 10.29 8.72 7.43 5.16 4.75 4.00 2.58 1.99 80 1.49 1.09 1.02 0.71 0.52 0.29 0.21 0.15 0.13 0.13 90 0.75 0.52 0.51 0.29 0.22 0.22 0.17 0.14 0.03 0.03 120 22.07 18.28 16.02 14.24 13.10 8.72 6.84 6.72 6.58 4.23 140 33.97 31.06 27.23 24.94 23.04 17.66 14.08 13.50 8.52 8.51 180 0.07 0.07 0.06 0.05 0.05 0.04 0.02 0.02 0.02 0.01 200 8.65 7.30 6.28 5.65 5.24 3.47 2.45 2.27 2.19 1.05 220 43.79 41.30 37.49 33.55 30.77 23.89 19.67 17.51 14.17 14.09 270 0.51 0.36 0.27 0.22 0.22 0.17 0.15 0.13 0.12 0.11 310 23.75 21.13 18.57 16.81 16.01 11.27 9.66 8.92 8.00 5.36