Comparison Study of Wind Effects on Transmission Towerunder Typhoon Wind Field and Terrain B Wind Field
Wind tunnel tests on a aeroelastic model of steel angle transmission tower under typhoon wind field and terrain B wind field were carried out, and then the time series of wind velocity for different height of the transmission tower were simulated by Weighted Amplitude Wave Superposition(WAWS) method and the wind-induced responses were calculated with FEM in time domain. The comparisons of wind-induced response and wind vibration factor between typhoon wind field and terrain B wind field were conducted. The results indicate that the wind-induced acceleration responses enlarge significantly with wind velocity increase, the wind-induced acceleration response under typhoon wind field is more intensive than that under terrain B wind field, and the amplification is up to 20%~30% . The highly weighted wind vibration factor with value of 1.59 under terrain B wind field, and the value of 1.85 under typhoon wind field are found , the amplification is up to 16% in total. The results from numerical simulation are in good agreement with that from the wind tunnel tests. Therefore, the design of transmission tower in typhoon-prone areas should take the fluctuating wind load magnification effect into consideration.
Keywords: transmission tower, typhoon wind field, wind-induced response, wind vibration factor, wind tunnel test, Weighted Amplitude Wave Superposition(WAWS)
ABD-ELAAL E, MILLS J E, MA X. A review of transmission line systems under downburst wind loads[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2018, 179：503—513.
MARA T G, HONG H P. Effect of wind direction on the response and capacity surface of a transmission tower[J]. Engineering Structures, 2013, 57：493—501.
YANG F L, YANG J B, NIU H W, et al. Design wind loads for tubular-angle steel cross -arm transmission towers under skewed wind loading [J]. Journal of Wind Engineering and Industrial Aerody namics, 2015, 140：10—18.
FU X, LI H N. Dynamic analysis of transmission tower-line system subjected to wind and rain loads [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2016, 157：95—103.
KIKUCHI N, MATSUZAKI Y, YUKINO T, et al. Aerodynamic drag of newdesign electric power wire in a heavy rainfall and wind[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2003, 91：41—51.
WANG S L, LIANG S G, XIONG T H, et al. Analysis on wind -induced response of transmission tower-line system based on aero-elastic model wind tunnel test [J]. Water Resources and Power, 2014, 32(8)：169—173.(In Chinese)
LIANG S G, ZOU L H, WANG D H, et al. Investigation on wind tunnel tests of a full aeroelastic model of electrical transmissiontower- linesystem[J]. Engineering Structures, 2015, 85：63—72.
LOU W J, WANG D, SHEN G H, et al. Wind tunnel tests for wind load distribution and shape coefficient of angle-made-transmission towers[J]. Journal of Huazhong University of Science and Technology(Natural Science Edition), 2013, 41(4)：114—118.(In Chinese)
SHEN G H, XIANG G T, XING Y L, et al. Experimental investigation of steel lattices towers with cylindrical members based on force balance tests under two wind flows[J]. Journal of Zhejiang Univer sity(Engineering Science), 2014, 48(4)：704—710.(In Chinese)
ZHANG Q H, MA W Y, ZHAO L. Wind-induced response analysis for the typical transmission tower with narrow base based on an aero-elastic model wind tunnel test [J]. Journal of Vibration, Measurement and diagnosis, 2017, 37(2)：326—331.(In Chinese)
GB 50009—2012 Load code for the design of building structures[S]. Beijing：China Architecture Building Press, 2012：220—221.(In Chinese)
LOU W J, XIA L, JIANG Y, et al. Wind-induced response and wind load factor of transmission tower under terrain B wind field and typhoon wind field [J]. Journal of vibration and Shock, 2013, 32(6)： 13—17.(In Chinese)
DENG H Z, DUAN C Y, XU H J. Wind tunnel tests on an aeroelastic model of a transmission tower-line system under normal wind field and typhoon wind field [J]. Journal of Vibration and Shock, 2018, 37(8)：257—262.(In Chinese)
ZHANG H J, YANG J B, YANG F L, et al. Study on the influence of typhoon wind parameters on mechanical characteristics of transmission towe[r J]. Electric Power, 2016, 49(2)：41—47.(In Chinese)
ZHANG J, XIE Q. Failure analysis of transmission tower subjected to strong wind load [J]. Journal of Constructional Steel Research, 2019, 160：271—279.
XUAN L, ZHANG W, NIU H W, et al. Probabilistic capacity assessment of single circuit transmission tower -line system subjected to strong winds[J]. Engineering Structures, 2018, 175：517—530.
CHEN F B, LI Q S, HU S Y, et al. Field measurement an wind tunnel test application research of typhoon wind field in open terrain
[J]. Building Structure, 2015, 45(2)：89—94.(In Chinese)
SHINOZUKA M, JAN C M. Digital simulation of random processes and its applications [J]. Journal of Sound & Vibration, 1972, 25 (1)：111—128.
LUO J J, HAN D J. Optimized algorithm of wave superposition method to simulate stochastic wind field[J]. Journal of South China University of Technology (Natural Science Edition), 2007(7)： 105—109.(In Chinese)
GAN F L, YANG Z W, DAI X G. Analysis on wind-Induced dynamic response of transmission tower -line system based on weighted amplitude wave superposition [J]. Power System Technology, 2009, 33(18)：186—190.(In Chinese)
D/T 5154—2012 Technical code for the design of tower and pole structures of overhead transmission line[S]. Beijing：China Planning Press, 2012：18—21.(In Chinese)
GB 50135—2006, Code for design of high -rising structures[S]. Beijing：China Planning Press, 2006：136—142.(In Chinese)
- There are currently no refbacks.