输电线路内悬浮抱杆起升动载系数的研究  

Uprising Dynamic Load Coefficient of Suspension Derricks for Transmission Lines

作　　者：马勇 夏拥军 孟凡豪 孙立江 安平 龚岩 MA Yong;XIA Yongjun;MENG Fanhao;SUN Lijiang;AN Ping;GONG Yan(Institute of Transmission and Transformation Engineering,China Electric Power Research Institute,Beijing 100055,China;Construction Branch of Gansu Electric Power Corporation,Lanzhou 730050,China)

机构地区：[1]中国电力科学研究院有限公司输变电工程研究所,北京100055 [2]国网甘肃省电力公司建设分公司,兰州730050

出　　处：《噪声与振动控制》2022年第5期80-84,共5页Noise and Vibration Control

基　　金：国家电网有限公司总部科技资助项目:基于极限状态法的组塔抱杆设计与施工方案智能化生成技术研究(5200-202033146A-0-0-00)。

摘　　要：输电线路内悬浮抱杆因使用安装方便而被广泛应用于输电线路的施工过程。然而内悬浮抱杆动力学特性的研究尚不完善,因此有必要建立内悬浮抱杆起升动载系数的动力学模型。根据位移与刚度的关系,对内悬浮抱杆的等效刚度进行求解;利用动能等效的原理,对内悬浮抱杆的等效质量进行求解。根据等效刚度和等效质量的求解结果,计算得到起升动载系数的表达式,并利用有限元软件进行仿真验证。结果表明起升动载系数能够很好地反映内悬浮抱杆的起升动载特性,可为内悬浮抱杆的设计计算提供理论依据和设计规范的修订提供一定的参考。Suspension derrick has been widely used in the construction of transmission lines because of its convenient application and installation. However, the research on the dynamic characteristics of the suspension derrick is insufficient. In this paper, a kinetic model for analyzing the dynamic load coefficient of the suspension derrick for transmission lines was established. According to the relationship between displacement and stiffness, the equivalent stiffness of the suspension derrick was solved. And according to the principle of kinetic energy equivalence, the equivalent mass of the suspension derrick was solved. Based on the equivalent stiffness and equivalent mass obtained by the solution, the expression of uprising dynamic load coefficient is obtained. The software of finite element analysis was used for simulation verification.The results show that the uprising dynamic load coefficient can well reflect the upraising dynamic load characteristics of the suspension derrick, which can provide a theoretical basis for the design and calculation of suspension derricks and provide a certain reference for the revision of design specification of suspension derricks in the future.

关 键 词：振动与波 起升动载系数 内悬浮抱杆 有限元分析 等效质量 等效刚度 

分 类 号：TH113[机械工程—机械设计及理论]