1000kV圆钢管变电构架体型系数风洞试验研究  

Research on Shape-coefficient of 1000kV Substation Steel Pipe Frame by Wind Tunnel Tests

作　　者：陈寅 朱东 Chen Yin;Zhu Dong(Central Southern China Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, Wuhan 430071, China)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,武汉430071

出　　处：《特种结构》2019年第2期69-74,共6页Special Structures

摘　　要：基于典型断面节段模型高频测力天平风洞试验,进行了1000kV圆钢管格构式变电构架风荷载体型系数研究,并将试验结果与各国规范和结构整体模型高频测力天平试验结果进行对照。结果表明:由节段模型试验得到的体型系数计算得到的结构基底剪力和弯矩与整体模型试验结果较接近,验证了该试验方法的合理性。各国规范对圆钢管格构式结构体型系数取值的差别较大,总体来说,本次试验结果与我国《建筑结构荷载规范》(GB50009-2012)的取值较接近;此外,与结构轴向有一定夹角(15°)的风荷载作用下,圆钢管变电构架的体型系数达到极大值,应引起结构设计的重视。The shape coefficients of a 1000 kV substation steel pipe frame under wind load were analyzed based on wind tunnel tests which used high frequency force balance on typical section models. The test results were compared with the results calculated by code formula and the results from the high frequency force balance wind tunnel tests of the whole structure model. The test results showed that: the validity of the wind tunnel test of the section model was confirmed by comparing the base shear force and bending moment of the structure with the value by the whole structure model test. Large differences for the shape coefficient of this lattice structure were observed among different codes. In general, the shape coefficients evaluated by the wind tunnel tests in this paper are close to that regulated in the code of GB50009-2012. The shape coefficient can reach its maximum when there is a certain angle between the wind direction and the axial(15 degree) and this should be emphasized in the structure design.

关 键 词：高频测力天平 变电构架 体型系数 风洞试验 

分 类 号：TM63[电气工程—电力系统及自动化]