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.
出处
《黑龙江电力》
CAS
2011年第6期438-440,共3页
Heilongjiang Electric Power
关键词
拉线初应力
拉门塔
不利攻角
风荷载
initial prestress of guy
guyed portal tower
unfavorable incidence
wind load
