移动下击暴流作用下输电塔的风振响应及荷载评估方法

摘要
图/表
参考文献(31)
相关文章 (15)

全文: PDF (3301 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要下击暴流是一种典型的局部强对流天气。由下击暴流风荷载导致的输电杆塔的倒塌事件时有发生，是目前造成国内外内陆地区输电线路风灾破坏的主要原因。基于下击暴流理论模型，采用准定常假设，模拟了移动下击暴流作用下输电塔的风荷载。通过输电塔的空间有限元建模与计算，考察了移动下击暴流平均风、拟静力和瞬态动力三种工况作用下输电塔在频域及时域内风振响应的规律。分析了移动下击暴流时变平均风作用下的最不利风剖面。同时，采用非平稳随机振动的极值分析理论，基于风振惯性力方法，给出了最不利风剖面作用下输电塔脉动风振响应的等效静力风荷载分布，且与有限元动力分析结果进行了对比和验证。研究为下击暴流作用下输电塔设计风荷载的评估提供了有效的探索。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	赵勇1
	孙启刚2
	宋卓彦2
	汪大海3
	王昕3

关键词 ：下击暴流, 输电塔, 风振响应, 等效静力风荷载

Abstract：Downburst is a typical local highly intensive wind all over the world, which attribute to main cause of wind damage to transmission lines in inland areas world widely.In this paper, based on the empirical model of downburst and the quasi-steady assumption, the wind load of moving downburst acting on the transmission tower was simulated.A spatial finite element model of the transmission tower was established, the wind-induced dynamic response of the transmission tower under three working conditions (mean wind, quasi-static and transient) of moving downburst was studied.The most unfavorable wind profile under the moving downburst average wind was found, and the relationship between the radial distance corresponding to the maximum structural response and the structure height and the jet diameter of the wind field was analyzed.At the same time, the wind-induced dynamic response of the transmission tower under the most unfavorable wind profile of the moving downburst was calculated by using the equivalent static wind load, and the results were compared with the time-varying analysis results.It provides an evaluation method for calculating the design wind load of transmission tower under the downburst.

Key words： downburst transmission tower wind-induced dynamic response equivalent static wind load

收稿日期: 2020-07-23 出版日期: 2021-06-28

引用本文:

赵勇1，孙启刚2，宋卓彦2，汪大海3，王昕3. 移动下击暴流作用下输电塔的风振响应及荷载评估方法[J]. 振动与冲击, 2021, 40(12): 179-188.
ZHAO Yong1,SUN Qigang2,SONG Zhuoyan2,WANG Dahai3,WANG Xin3. A dynamic responses and evaluation method of the downburst wind loads effect on a transmission tower. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(12): 179-188.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I12/179

［1］FUJITA T T.Manual of downburst identification for project NIMROD［R］.SMRP Research Paper 156, University of Chicago, 104pp．［NTIS PB—286048］, 1978.

［2］FUJITA T T. Downbursts: meteorological features and wind field characteristics［J］.Journal of Wind Engineering and Industrial Aerodynamics, 1990, 36(1):75-86.

［3］谢强,张勇,李杰.华东电网500 kV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.

［4］司宝华,阎新社,袁甜.面对灾情他们挺起钢铁般脊梁［J］.华北电业,2009(5):74-77.
SI Baohua, YAN Xinshe, YUAN Tian.Facing the disaster, they stood up like a steel backbone ［J］.North China Power,2009(5):74-77.

［5］陈国建.南通地区输电线路风灾倒塔分析与防范对策［J］.江苏电机工程, 2012, 31(2): 18-21.
CHEN Guojian.Tower collapse analysis and preventive countermeasures of transmission line wind disaster in Nantong area ［J］.Jiangsu Electrical Engineering, 2012, 31(2): 18-21.

［6］VICROY D D.A simple, analytical, axisymmetric microburst model for downdraft estimation［R］.Nasa Technical Memorandum, 1991.

［7］OSEGUERA R M, BOWLES R L.A simple analytic 3-dimensional downburst based on boundary layer stagnation flow［R］.NASA Technical Memorandum 100632, 1988.

［8］HOLMES J D, OLIVER S E.An empirical model of a downburst［J］.Engineering Structures, 2000, 22(9): 1167-1172.

［9］LI C, LI Q S, XIAO Y Q, et al.A revised empirical model and CFD simulations for 3D axisymmetric steady-state flows of downbursts and impinging jets［J］.Journal of Wind Engineering and Industrial Aerodynamics, 2012, 102: 48-60.

［10］ABD-ELAAL E S, MILLS J E, MA X.An analytical model for simulating steady state flows of downburst［J］.Journal of Wind Engineering and Industrial Aerodynamics, 2013, 115: 53-64.

［11］赵杨, 曹曙阳, Tamura Yukio等.雷暴冲击风模拟及其荷载的风洞试验研究［J］.振动与冲击, 2009, 28(4): 1-3.
ZHAO Yang, CAO Shuyang, TAMURA Y, et al.Wind tunnel test study on thunderstorm impact wind simulation and its load ［J］.Journal of Vibration and Shock, 2009, 28(4): 1-3.

［12］邹鑫, 汪之松, 李正良.稳态雷暴冲击风风速剖面模型研究［J］.振动与冲击, 2016, 35(15): 74-79.
ZOU Xin, WANG Zhisong, LI Zhengliang.Study on the wind speed profile model of steady-state thunderstorm ［J］.Journal of Vibration and Shock, 2016, 35(15): 74-79.

［13］ELAWADY A, ABOSHOSHA H, EL DAMATTY A.Aero-elastic response of transmission line system subjected to downburst wind: Validation of numerical model using experimental data［J］.Wind and Stuructures, 2018, 27(2):71-88.

［14］SHEHATA A Y, EI DAMATTY A A.Behavior of guyed transmission line structures under downburst wind loading［J］.Wind and Structures, 2007, 10(3): 249-268.

［15］王昕, 楼文娟, 李宏男,等.雷暴冲击风作用下高耸输电塔风振响应［J］.浙江大学学报(工学版), 2009, 43(8):1520-1525.
WANG Xin, LOU Wenjuan, LI Hongnan, et al.Wind-induced vibration response of high-rise transmission towers under the impact of thunderstorm［J］.Journal of Zhejiang University(Engineering Science), 2009, 43(8): 1520-1525.

［16］吉柏锋, 瞿伟廉.下击暴流作用下输电塔弹塑性失稳倒塌研究［J］.中国安全科学学报, 2014: 90-95.
JI Bofeng, QU Weilian.Study on Elastoplastic instability and collapse of Transmission Tower under the Action of downburst［J］.China Safety Science Journal, 2014: 90-95.

［17］杨风利, 张宏杰, 杨靖波, 等.下击暴流作用下输电铁塔荷载取值及承载性能分析［J］.中国电机工程学报, 2014, 34: 4179-4186.
YANG Fengli, ZHANG Hongjie,YANG Jingbo, et al.Analysis of load value and bearing performance of transmission tower under downburst ［J］.Proceedings of The Chinese Society for Electrical Engineering, 2014, 34: 4179-4186.

［18］李宏海. 下击暴流时空分布统计与风场特性和结构风荷载试验研究［D］.哈尔滨, 哈尔滨工业大学, 2015.

［19］徐挺,陈勇, 彭志伟, 等.雷暴冲击风风洞设计及流场测试［J］.实验力学, 2009, 24(6): 505-512.
XU Ting, CHEN Yong, PENG Zhiwei, et al.Wind tunnel design and flow field measurement of thunderstorm impact ［J］.Journal of Experimental Mechanics, 2009, 24(6): 505-512.

［20］刘慕广, 黄琳玲, 邹云峰.雷暴冲击风下输电塔风振特性试验研究［J］.实验力学, 2018, 33(6): 869-876.
LIU Muguang, HUANG Linling, ZOU Yunfeng.Experimental study on wind-induced vibration characteristics of transmission tower under thunderstorm impact wind［J］.Journal of Experimental Mechanics, 2018, 33(6): 869-876.

［21］ABOSHOSHA H, EL DAMATTY A.Engineering method for estimating the reactions of transmission line conductors under downburst winds［J］.Elsevier Ltd,2015,99(15): 272-284.

［22］EL DAMATTY A, ELAWADY A.Critical load cases for lattice transmission line structures subjected to downbursts: Economic implications for design of transmission lines［J］.Engineering Structures, 2018, 159: 213-226.

［23］CHEN L, LETCHFORD C W.A deterministic-stochastic hybrid model of downbursts and its impact on a cantilevered structure［J］.Engineering Structures, 2004, 26(5): 619-629.

［24］HOLMES J D. Modeling of extreme thunderstorm winds for wind loading of structures and risk assessment［C］∥ Wind Engineering into 21st Century, Proceedings of 10th International Conference on Wind Engineering, Denmark, 1999.

［25］SHINOZUKA M, DEODATIS G.Simulation of multi-dimensional Gaussian stochastic fields by spectral representation ［J］.Applied Mechanics Reviews, 1996, 49(1): 29-53.

［26］曹映泓,项海帆,周颖.大跨度桥梁随机风场的模拟［J］.土木工程学报,1998(3):72-79.
CAO Yinghong, XIANG Haifan, ZHOU Ying.Simulation of random wind field of long-span bridge ［J］.China Civil Engineering Journal,1998(3):72-79.

［27］国家能源局.架空输电线路荷载规范：DL/T 5551—2018［S］.北京:中国计划出版社,2018.

［28］ASCE. Guidelines for electrical transmission line structural loading.Published by the american society of civil engineers［S］.No.74.2009.

［29］LUTES L D, SARKANI S.Random vibration: analysis of structural and mechanical systems［M］ Elsevier, Heinemann, MA., 2001.

［30］CHEN X. Analysis of multimode coupled buffeting response of long-span bridges to nonstationary winds with force parameters from stationary wind ［J］.Journal of Structural Engineering, 2014.141(4): 04014131-1-14.

［31］中华人民共和国国家标准.建筑结构荷载规范: GB 5009—2012 ［S］.北京：中国建筑工业出版社, 2012.