格构式塔架横风向脉动风荷载空间相关性研究

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (5) : 25-31.

论文

李峰1,邹良浩1,梁枢果1,陈寅2

作者信息 +

Spatial correlation of across-wind wind fluctuating wind load of a lattice tower

LI Feng1, ZOU Lianghao1, LIANG Shuguo1, CHEN Yin2

Author information +

文章历史 +

摘要

为了研究格构式塔架横风向脉动风荷载的空间相关性，基于某实际格构式塔架2个典型节段模型同步高频测力天平风洞试验和同步风速测试风洞试验，测得了模型基底剪力、弯矩和风速时程，通过数据处理方法得到了其横风向脉动风荷载及脉动风速的相干函数。在此基础上，分析比较了脉动风荷载及脉动风速的相干函数特点与变化规律。结果表明：格构式塔架横风向风荷载相干函数与频率，水平距离和竖向距离均有关；格构式塔架横风向风荷载相干函数与现有高层建筑及锥形烟囱等结构的结果存在一定差别。最后，运用非线性最小二乘法拟合得到了脉动风荷载相干函数经验公式，拟合公式与试验结果较吻合，可为分析格构式塔架横风向风荷载及风致响应提供一定的参考。

Abstract

Here, to study spatial correlation of across-wind fluctuating wind load of a lattice tower, based on two typical segmental models of a certain lattice tower’s synchronous high-frequency force-measuring balance wind tunnel tests and synchronous wind speed measuring wind tunnel tests, two models’ base shear force, bending moment and wind speed time histories were measured.Coherence functions of across-wind fluctuating wind load and fluctuating wind speed were calculated with the data-processing method, and these coherence functions’ characteristics and variation laws were analyzed contrastively.The results showed that coherence function of across-wind fluctuating wind load of a lattice tower is related to frequency, horizontal distance, and vertical distance; there is a certain deviation between this coherence function and those of existing high-rise buildings and conical chimneys.Finally, the nonlinear least square method was used to deduce the empirical formula for across-wind fluctuating wind load coherence function.It was shown that the calculation results with this fitted formula agree well with test ones; the study results provide a reference for analyzing across-wind fluctuating wind load and wind-induced response of lattice towers.

导出引用

李峰1,邹良浩1,梁枢果1,陈寅2. 格构式塔架横风向脉动风荷载空间相关性研究[J]. 振动与冲击, 2020, 39(5): 25-31

LI Feng1, ZOU Lianghao1, LIANG Shuguo1, CHEN Yin2. Spatial correlation of across-wind wind fluctuating wind load of a lattice tower[J]. Journal of Vibration and Shock, 2020, 39(5): 25-31

参考文献

[1] HOLMES J D. Along-wind response of lattice towers—II. Aerodynamic damping and deflections [J]. Engineering Structures, 1996, 18(7): 483-488.
[2] HOLMES J D. Along wind response of lattice towers—III. Effective load distributions [J]. Engineering Structures, 1996, 18(7): 489-494.
[3] HOLMES J D. Along-wind response of lattice towers: part I - derivation of expressions for gust response factors [J]. Engineering Structures, 1994, 16(4): 287-292.
[4] 邹良浩, 梁枢果, 熊铁华, 等. 格构式塔架顺风向风振响应 [J]. 土木建筑与环境工程, 2009, 31(3): 42-47.
ZOU Lianghao, LIANG Shuguo, XIONG Tiehua, et al. Wind-induced Dynamic Responses in Along-wind Direction for Lattice Towers[J]. Journal of Civil, Architectural & Environmental Engineering, 2009, 31(3): 42-47. (In Chinese)
[5] CALOTESCU I, SOLARI G. Alongwind load effects on free-standing lattice towers [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2016, 155:182-196.
[6] 楼文娟, 孙炳楠, 叶尹. 高耸塔架横风向动力风效应 [J]. 土木工程学报, 1999, 32(6): 67-71.
LOU Wen-juan, SUN Bing-nan, YE Yin. Across-wind dynamic response of tall latticed towers [J]. China civil engineering journal, 1999, 32(6): 67-71. (In Chinese)
[7] 邹良浩, 李峰, 汤怀强, 等. 基于HFFB试验的结构广义荷载与风振响应分析 [J]. 振动测试与诊断, 2018, 38(1): 103-110.
ZOU Liang-hao, LI Feng, TANG Huai-qiang, et al. Analysis of generalized force and wind-induced responses of structures based on high-frequency force balance wind tunnel tests [J]. Journal of vibration, measurement and diagnosis, 2018, 38(1): 103-110. (In Chinese)
[8] LIANG S, ZOU L, WANG D, et al. Investigation on wind tunnel tests of a full aeroelastic model of electrical transmission tower-line system [J]. Engineering Structures, 2015, 85: 63-72.
[9] 张庆华, 顾明. 基于高频天平测力试验的500kV单回路输电塔风致响应研究 [J]. 振动与冲击, 2014, 33(4): 156-160.
ZHANG Qing-hua, GU Ming. Wind-induced response of a 500kV single-circuit transmission tower based on high-frequency force-balance technique [J]. Journal of vibration and shock, 2014, 33(4): 156-160. (In Chinese)
[10] BALLIO G, MABERINI F, SOLARI G. A 60 year old, 100 m high steel tower: limit states under wind actions [J]. Journal of Wind Engineering & Industrial Aerodynamics, 1992, 43(1): 2089-2100.
[11] MOMOMURA Y, MARUKAWA H, OKAMURA T, et al. Full-scale measurements of wind-induced vibration of a transmission line system in a mountainous area [J]. Journal of Wind Engineering & Industrial Aerodynamics, 1997, 72(1): 241-252.
[12] 梁枢果, 邹良浩, 赵林, 等. 格构式塔架三维动力风荷载的风洞试验研究 [J]. 空气动力学学报, 2007, 25(3): 311-318.
LIANG Shu-guo, ZOU Liang-hao, ZHAO Lin, et al. Analytical Model of Dynamic Wind Loads on Lattice Towers[J]. Acta aerodynamic sinica, 2007, 25(3): 311-318. (In Chinese)
[13] 梁枢果, 邹良浩, 赵林, 等. 格构式塔架动力风荷载解析模型 [J]. 同济大学学报(自然科学版), 2008, 36(2): 166-171.
LIANG Shuguo, ZOU Lianghao, ZHAO Lin, et al. Analytical Model of Dynamic Wind Loads on Lattice Towers[J]. Journal of Tongji University: Natural Science, 2008, 36(2): 166-171. (In Chinese)
[14] ZOU L, LIANG S, LI Q S, et al. Investigation of 3-D dynamic wind loads on lattice towers [J]. Wind & Structures An International Journal, 2008, 11(4): 323-340.
[15] 李正良, 刘欣鹏, 晏致涛, 等. 遮挡型格构式塔架风力特性试验研究 [J]. 振动与冲击, 2015, 34(11): 99-104.
LI Zheng-liang, LIU Xin-peng, YAN Zhi-tao, et al. Tests for wind force on occluded latticed towers [J]. Journal of vibration and shock, 2015, 34(11): 99-104. (In Chinese)
[16] YANG F, DANG H, NIU H, et al. Wind tunnel tests on wind loads acting on an angled steel triangular transmission tower [J]. Journal of Wind Engineering & Industrial Aerodynamics, 2016, 156: 93-103.
[17] LI Y, LI Z, YAN B, et al. Wind forces on circular steel tubular lattice structures with inclined leg members [J]. Engineering Structures, 2017, 153: 254-263.
[18] XIE Q, CAI Y, XUE S. Wind-induced vibration of UHV transmission tower line system: Wind tunnel test on aero-elastic model [J]. Journal of Wind Engineering & Industrial Aerodynamics, 2017, 171: 219-229.
[19] DENG H Z, XU H J, DUAN C Y, et al. Experimental and numerical study on the responses of a transmission tower to skew incident winds [J]. Journal of Wind Engineering & Industrial Aerodynamics, 2016, 157: 171-188.
[20] VICKERY B J, CLARK A W. Lift or Across-Wind Response to Tapered Stacks [J]. Journal of the Structural Division, 1972, 98: 1-20.
[21] 梁枢果, 刘胜春, 张亮亮, 等. 矩形高层建筑横风向动力风荷载解析模型 [J]. 空气动力学学报, 2002, 20(1): 32-38.
LIANG Shu-guo, LIU Sheng-chun, ZHANG Liang-liang, et al. Analytical Model of acrosswind dynamic loads on rectangular tall buildings [J]. Acta aerodynamic sinica, 2002, 20(1): 32-38. (In Chinese)
[22] HUANG D M, ZHU L D, CHEN W, et al. Vertical coherence functions of wind forces and influences on wind-induced responses of a high-rise building with section varying along height [J]. Wind & Structures An International Journal, 2015, 21(2): 119-158.
[23] 谢强, 孙启刚, 管政. 多分裂导线整体阻力系数风洞试验研究 [J]. 电网技术, 2013, 37(4): 1106-1112.
XIE Qiang, SUN Qi-gang, GUAN Zheng. Wind Tunnel Test on Global Drag Coefficients of Multi-Bundled Conductors[J]. Power System Technology, 2013, 37(4): 1106-1112. (In Chinese)
[24] DYRBYE C, HANSEN S O. Wind Loads on Structures [J]. 1997, 3(2): 85–86.
[25] 黄东梅, 朱乐东, 丁泉顺. 大气边界层风速竖向相干函数实验研究 [J]. 实验流体力学, 2009, 23(4): 34-40.
HUANG Dong-mei, ZHU Le-dong, DING Quan-shun. Experimental research on vertical coherence function of wind velocities in atmospheric boundary layer wind field[J]. Journal of Experiements in Fluid Mechanics, 2009, 23(4):34-40. (In Chinese)