隔离开关与支架体系风振实测与响应分析  

Wind vibration measurement and response analysis of isolation switch and support system

作　　者：刘勇[1] 魏珍中[1] 蒋昱楠 毕文哲 周梦瑶 杨萌 田利[2] LIU Yong;WEI Zhenzhong;JIANG Yu'nan;BI Wenzhe;ZHOU Mengyao;YANG Meng;TIAN Li(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250013,Shandong,China;School of Civil Engineering,Shandong University,Jinan 250061,Shandong,China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250013 [2]山东大学土建与水利学院,山东济南250061

出　　处：《山东大学学报（工学版）》2023年第1期83-91,共9页Journal of Shandong University（Engineering Science）

基　　金：山东大学青年学者未来计划(2017WLJH33)。

摘　　要：基于现场实测和数值模拟,开展隔离开关与支架体系的动力风振实测与响应分析。基于计算流体动力学(computational fluid dynamics, CFD)模拟,研究隔离开关与支架体系的体型系数,并与规范计算结果进行对比分析;基于隔离开关与支架体系风振响应分析,开展风振系数数值模拟值与规范建议值的对比研究。研究结果表明:基于规范计算的格构式支架体型系数明显偏大,规范计算的体型系数相对保守;动侧结构的平均振动水平高于静侧结构,触头端部和结构顶部的位移响应明显高于支架顶部;设备支架在不同风攻角下的风振系数存在明显差异,其中60°风攻角下最大,对于斜风向角工况下规范给出的建议风振系数偏小。本研究结果可以为隔离开关与支架体系抗风设计提供科学依据。Based on field measurement and numerical simulation, this paper carried out the dynamic wind vibration measurement and response analysis of the isolation switch and support system. Based on computational fluid dynamics(CFD) simulation, the shape coefficient of the isolation switch and the support system was studied and compared with the specification. Based on the wind-induced vibration response analysis of the isolation switch and support system, comparison study on the wind vibration coefficients between the simulated results and the values recommended by specification was carried out. The results showed that the shape coefficient of lattice bracket based on standard calculation was obviously larger, and the shape coefficient calculated by standard was relatively conservative. The average vibration level of the moving side structure was higher than that of the static side structure, and the displacement response of the contact end and the top of the structure was significantly higher than that of the top of the bracket. There were significant differences in the wind vibration coefficients of the equipment support under different wind attack angles. When the wind attack angle was 60°, the wind vibration coefficient was the largest, and the recommended value of the wind vibration coefficient given by the specification under oblique wind direction angle was small. The results of this study could provide a scientific basis for wind-resistant design of isolation switch and support system.

关 键 词：隔离开关与支架体系 风振实测 CFD 体型系数 风振响应分析 

分 类 号：TU352.1[建筑科学—结构工程]