大跨越钢管塔双平臂抱杆的风致响应

黄铭枫,魏歆蕊,叶何凯,叶建云,楼文娟

Wind-induced response of crane structure with double flat arms for long-span transmission towers

Ming-feng HUANG,Xin-rui WEI,He-kai YE,Jian-yun YE,Wen-juan LOU

表 3 双平臂抱杆结构整体风力系数对比

Tab.3 Comparisons of aerodynamic force coefficients for complete crane structure with double flat arms

平臂姿态 $\theta $/（°） Cx 误差/% Cy 误差/% 文献[18] 风洞试验 文献[18] 风洞试验 0° 0 2.23 2.26 −1.33 0 −0.03 0° 45.0 1.71 1.89 −9.52 1.56 1.68 −7.14 0° 90.0 0 0.23 1.90 1.72 10.47 22.5° 22.5 2.07 2.13 −2.82 0.92 1.04 −11.54 22.5° 67.5 0.93 1.02 −8.82 1.83 2.26 −19.03 22.5° 112.5 −0.79 −0.53 49.06 1.76 1.81 2.76 45° 45.0 1.79 1.58 13.29 1.79 1.90 −5.79 45° 90.0 0.11 0.17 −35.29 2.02 2.24 −9.82 45° 135.0 −1.55 −1.14 35.96 1.55 1.41 9.93