拉线门型塔中大风工况下拉线预应力变化影响结果的研究  

Study on the influence of strong-wind working conditions in guyed portal tower on the change of guy prestress

作　　者：王德贺[1] 杨晓军[1] 李小磊[2] 

机构地区：[1]东北电力大学,吉林吉林132012 [2]泸州电业局,四川泸州646000

出　　处：《黑龙江电力》2011年第6期438-440,共3页Heilongjiang Electric Power

摘　　要：针对拉线式输电塔在风荷载作用下拉线初应力影响其结构受力性能的问题,阐述了使用结构分析软件建立拉线式门型输电塔结构非线性有限元模型的过程,通过工程实例分析了在最不利攻角下对不同拉线初应力下的塔身结构受力情况,得出了拉线初应力变化对拉线塔支座反力、塔身杆件节点位移、杆件轴向应力影响的规律,为拉线塔设计和施工提供了理论依据。Since the initial prestress of guy influences the mechanics of guyed portal transmission tower under wind load, this paper introduces how the nonlinear infinite model of guyed portal transmission tower structure is established by structural analysis software. Through the project, the paper analyzes the mechanics of tower under different initial prestress at the most unfavorable incidence and deduces the influence regular pattern of initial prestress of guy for the counterforce of guyed tower supporting seat, node displacement of tower members and axial stress of members, which provides theoretical reference for the design and construction of guyed tower.

关 键 词：拉线初应力 拉门塔 不利攻角 风荷载 

分 类 号：TM753[电气工程—电力系统及自动化]