大跨越输电塔线体系有限元建模  

Finite Element Modeling of Long Span Transmission Line System

作　　者：徐建国[1] 石华军[2] 郭勇[1] 叶尹[1] 邢月龙[1] 

机构地区：[1]浙江省电力设计院,杭州市310012 [2]浙江省电力公司,杭州市310007

出　　处：《电力建设》2011年第3期15-19,共5页Electric Power Construction

基　　金：国家电网公司科技项目(舟山与大陆联网海上大跨越关键技术研究与实施)

摘　　要：以舟山大跨越输电塔线体系为工程背景,分别采用等效刚度空间梁单元、杆单元、悬链线索单元对输电塔、绝缘子和输电线进行了模拟,建立了塔线耦合体系的空间有限元模型。建模过程兼顾了模型的准确性和计算效率,重点阐述了悬链线索单元在输电线模拟中的应用。以此为基础,通过时域分析方法对塔线体系的动力特性和风振响应进行了计算。A spatial finite element model of the tower-line coupled system is established based on the Zhoushan long span transmission line system.The tower,isolator and the transmission line are simulated with the equivalent stiffness beam element,truss element and catenary cable element.The mechanical model has taken account of the accuracy and computational efficiency.The paper specially describes the application of catenary cable element in simulating the transmission line.Based on the model,the dynamic characteristics and wind-induced response have been calculated with time-domain analysis method.

关 键 词：大跨越输电塔线体系 悬链线索单元 风振响应 动力特性 

分 类 号：TU392.6[建筑科学—结构工程]