华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (6): 147-152.

• 土木建筑工程 • 上一篇    

基于高频天平测力试验的输电塔风荷载空间分布估计

肖正直 李正良 汪之松 晏致涛   

  1. 重庆大学 土木工程学院, 重庆 400030
  • 收稿日期:2008-11-06 修回日期:2008-12-02 出版日期:2009-06-25 发布日期:2009-06-25
  • 通信作者: 肖正直(1979-),男,博士生,主要从事输电塔抗风研究. E-mail:xzzd1979@hotmail.com
  • 作者简介:肖正直(1979-),男,博士生,主要从事输电塔抗风研究.
  • 基金资助:

    国家自然科学基金资助项目(50678181,50708118);国家电网公司科技计划项目(SGKJ[2007]413)

Spatial Distribution Estimation of Wind Loads on Transmission Tower Based on High-Frequency Force Balance Tests

Xiao Zheng-zhi  Li Zheng-liang  Wang Zhi-song  Yan Zhi-tao   

  1. College of Civil Engineering, Chongqing  University, Chongqing 400030, China
  • Received:2008-11-06 Revised:2008-12-02 Online:2009-06-25 Published:2009-06-25
  • Contact: 肖正直(1979-),男,博士生,主要从事输电塔抗风研究. E-mail:xzzd1979@hotmail.com
  • About author:肖正直(1979-),男,博士生,主要从事输电塔抗风研究.
  • Supported by:

    国家自然科学基金资助项目(50678181,50708118);国家电网公司科技计划项目(SGKJ[2007]413)

摘要: 基于高频动态测力天平基本原理,在脉动风荷载准定常假设的基础上,估计出输电塔脉动风荷载的空间分布.以建设中的向家坝-上海,锦屏-苏南±800kV特高压直流输电线路工程中的输电塔ZVK为算例,验证文中方法的有效性.计算结果表明:该方法能较好地反应风荷载的空间分布特性,是对高频天平测力实验局限性的一种可靠方便的扩展.

关键词: 风洞试验, 高频天平测力试验, 风荷载, 空间分布, 特高压, 输电塔

Abstract:

Based on the basic principle of high-frequency force balance assumption of pulse wind loads, the spatial distribution of wind loads on numerical analysis is conducted on the crossing tower ZVK of the (HFFB) technique and the quasi-steady the transmission tower is estimated. Then, Xiangjiaba--Shanghai , Jinping--Sunan + 800 kV ultra-high voltage (UHV) transmission project now being constructed, and the effectiveness of this proposed method is verified. Calculated results show that the proposed method extends the HFFB test reliably and feasibly because it well reveals the spatial distribution of wind loads on the transmission tower.

Key words: wind tunnel test, high-frequency force balance test, wind load, spatial distribution, ultra-high voltage, transmission tower