|本期目录/Table of Contents|

[1]李杰,阎启,谢强,等.台风“韦帕”风场实测及风致输电塔振动响应[J].建筑科学与工程学报,2009,26(02):1-8.
　LI Jie,YAN Qi,XIE Qiang,et al.Wind Field Measurements and Wind-induced Vibration Responses of Transmission Tower During Typhoon Wipha[J].Journal of Architecture and Civil Engineering,2009,26(02):1-8.
点击复制

台风“韦帕”风场实测及风致输电塔振动响应(PDF)
分享到：

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
26卷
期数:
2009年02期
页码:
1-8
栏目:
出版日期:
2009-06-20

文章信息/Info

Title:
Wind Field Measurements and Wind-induced Vibration Responses of Transmission Tower During Typhoon Wipha
作者:
李杰1,2,阎启1,谢强1,2,陈隽1,2
1.同济大学建筑工程系,上海200092;2.同济大学土木工程防灾国家重点实验室,上海200092
Author(s):
LI Jie1,2, YAN Qi1, XIE Qiang1,2, CHEN Jun1,2
1. Department of Building Engineering, Tongji University, Shanghai 200092, China; 2. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University,Shanghai 200092, China
关键词:
台风“韦帕”;  现场实测;  风场均匀性;  输电塔;  阻尼比;  动力特性
Keywords:
typhoon Wipha;  field measurement;  homogeneousness of wind field;  transmission tower;  damping ratio;  dynamic characteristic
分类号:
TU311.3
DOI:
-
文献标志码:
A
摘要:
给出了台风“韦帕”经过时,在典型的农村地貌上进行的多点边界层风特性以及风致输电塔振动的实测结果。基于风速数据,重点分析了风特性各项参数的空间均匀性,包括平均风速和风向、风剖面参数、湍流强度、阵风因子、湍流积分尺度和脉动风谱、竖向衰减系数以及水平相干性。采集了输电塔横担和塔头塔身连接处垂直线路方向的振动加速度。基于振动数据,应用Hilbert-Huang变换(HHT)方法识别了输电塔垂直线路方向第1、2阶模态的自振频率和阻尼比。结果表明,自振频率识别结果与有限元计算结果比较接近,阻尼比识别结果远大于一般钢结构的阻尼比。
Abstract:
The multi-points field measurement results of boundary layer wind characteristics over typical country terrain and wind-induced response of transmission tower during the passage of typhoon Wipha were presented. Detailed analyses of the wind speed were conducted to investigate the spatial homogeneousness of wind field during windstorms. The measured wind data were analyzed to compare the information on mean wind speed and wind direction, wind profile parameters, turbulence intensity, gust factor, turbulence integral length scale and spectra of fluctuating wind, vertical decay factor and horizontal coherence. Besides the wind speed, lateral wind-induced acceleration responses at the middle and the top of the 43-meters high transmission tower were measured. Based on the field measurements, the natural vibration frequencies and damping ratios of the first two lateral vibration modes were identified by Hilbert-Huang transform(HHT). The results show that identified results of natural vibration frequencies are well matched with those of finite element method calculation, and identified results of damping ratios are more greater than that those of general steel structures.

参考文献/References:

[1] 谢 强,张 勇,李 杰.华东电网500kV任上5237线飑线风致倒塔事故调查分析[J].电网技术,2006,30(10):59-63. XIE Qiang,ZHANG Yong,LI Jie.Investigation on Tower Collapses of 500 kV Renshang 5237 Transmission Line Caused by Downburst[J].Power System Technology,2006,30(10):59-63.
[2]谢 强,李 杰.电力系统自然灾害的现状与对策[J].自然灾害学报,2006,15(4):126-131. XIE Qiang,LI Jie.Current Situation of Natural Disaster in Electric Power System and Countermeasures[J].Journal of Natural Disasters,2006,15(4):126-131.
[3]FU J Y,LI Q S,WU J R,et al.Field Measurements of Boundary Layer Wind Characteristics and Wind-induced Responses of Super-tall Buildings[J].Journal of Wind Engineering and Industrial Aerodynamics,2008,96(8/9):1332-1358.
[4]MEHTA K C,KADABA R.Field Data Analysis of Electrical Conductor Response to Winds[J].Journal of Wind Engineering and Industrial Aerodynamics,1990,36(1/3):329-338.
[5]DYRBYE C,HANSEN S O.Wind Loads on Structures[M].New York:John Wiley & Sons,1997.
[6]CHEN J,XU Y L,ZHANG R C.Modal Parameter Identification of Tsing Ma Suspension Bridge Under Typhoon Victor:EMD-HT Method[J].Journal of Wind Engineering and Industrial Aerodynamics,2004,92(10):805-827.
[7]陈 隽,徐幼麟,李 杰.Hilbert-Huang变换在密频结构阻尼识别中的应用[J].地震工程与工程振动,2003,23(4):34-42. CHEN Jun,XU You-lin,LI Jie.Hilbert-Huang Transform for Damping Ratio Identification of Structures with Closely Spaced Modes of Vibration[J].Earthquake Engineering and Engineering Vibration,2003,23(4):34-42.
[8]张琳琳,谢 强,李 杰.输电线路多塔耦联体系的风致动力响应分析[J].防灾减灾工程学报,2006,26(3):261-267. ZHANG Lin-lin,XIE Qiang,LI Jie.Dynamic Wind-induced Response Analysis of Multi-tower-line Coupled System of Transmission Line[J].Journal of Disaster Prevention and Mitigation Engineering,2006,26(3):261-267.

相似文献/References:

[1]张一鸣,王飞球,金顺利,等.铁路简支梁桥动力响应数值分析与实测验证[J].建筑科学与工程学报,2019,36(04):87.
　ZHANG Yi-ming,WANG Fei-qiu,JIN Shun-li,et al.Numerical Analysis and Field Measurement Validation of Dynamic Characteristics of Simply-supported Beam Railway Bridge[J].Journal of Architecture and Civil Engineering,2019,36(02):87.

备注/Memo

备注/Memo:
收稿日期:2009-04-03
基金项目:国家自然科学基金创新研究群体科学基金项目(50621062); 国家自然科学基金项目(50508026); 国家自然科学基金项目(50778135); 霍英东教育基金会高等院校青年教师优选资助课题(114021)
作者简介:李 杰(1957-),男,河南开封人,教授,博士研究生导师,工学博士,E-mail:lijie@tongji.edu.cn。
更新日期/Last Update: 2009-06-20