风屏障对简支箱梁桥上风场分布影响的试验研究

摘要
图/表
参考文献(35)
相关文章 (15)

全文: PDF (3379 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为探究横风作用下风屏障对简支箱梁桥上轨道上方风场特征分布的影响机理，以高速铁路典型跨度32m预应力混凝土简支箱梁为背景，通过几何缩尺比为1:30的节段模型风洞试验，采用三维脉动风速仪测试了铁路桥面轨道中心上方的风场信息，并考虑了来流风环境、轨道位置、透风率等试验因素。研究结果表明：基于最小二乘法理论对试验数据进行过原点的线性拟合分析可以更好地反映测点风速与来流风速之间关系；与裸梁桥面风场的湍流强度相比，均匀来流风速对风屏障屏蔽作用下的桥面风场湍流强度影响较大，其风速比非一致性指标与其湍流强度的变异性相关；均匀风场中桥面轨道中心部分位置的风速增加可达32.8%，而湍流风场会弱化裸梁桥面等效风场的放大效应；风屏障可以有效地降低桥面风场的平均风速，透风率30%的风屏障屏蔽作用下其迎、背风侧等效风速分别为裸梁状态下的21.6%和19.4%。

	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
	邱晓为1
	李小珍1
	谭懿玲1
	李星星1
	肖军1
	2
	3

关键词 ：简支箱梁, 风屏障, 风速比, 湍流强度, 风洞试验

Abstract：To investigate the influence mechanism of wind barrier on wind field characteristics distribution above the track of typical simply supported box girder under the cross wind action, the wind tunnel test of a section model with a 1:30 geometric scale was carried out on a 32m (typical span of high-speed railway ) prestressed concrete simply supported box girder, The wind field information above the track center of railway bridge deck was measured by three-dimensional fluctuating anemometer, and the test factors such as incoming wind environment, track position and porosities were considered. The result shows that: based on the theory of least squares method, the linear fitting analysis of the test data with zero intercept can better reflect the wind speed relationship between the measuring point and the far field. Compared with the bare beam bridge, the uniform incoming wind speed has a greater influence on the turbulence intensity of the bridge deck wind field with the wind barrier, and the inconsistency index of wind speed ratio is related to the variability of turbulence intensity. The wind speed at the special position of the bridge track center in the uniform wind field increased by 32.8%, however the turbulent wind field will weaken the amplification effect of the equivalent wind field on the bare bridge deck. The wind barrier successfully decreases the mean velocity above the girder, under the shielding effect of a wind barrier with a porosity of 30%, the equivalent wind speeds on the windward and leeward sides are 21.6% and 19.4% of those in the bare beam state, respectively.

Key words： simply support box gird wind barrier wind speed ratio turbulence intensity wind tunnel test

收稿日期: 2020-09-21 出版日期: 2022-03-15

引用本文:

邱晓为1，李小珍1，谭懿玲1，李星星1，肖军1,2,3. 风屏障对简支箱梁桥上风场分布影响的试验研究[J]. 振动与冲击, 2022, 41(5): 287-295.
QIU Xiaowei1, LI Xiaozhen1, TAN Yiling1, LI Xingxing1, XIAO Jun1,2,3. Tests for effects of wind barrier on wind field distribution above track on a simply supported box girder bridge. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(5): 287-295.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I5/287

[1] 田红旗.中国恶劣风环境下铁路安全行车研究进展[J].中南大学学报(自然科学版),2010,41(06):2435-2443.
TIAN Hong-qi. Research progress in railway safety under strong wind condition in china［J］.Journal of Central South University, 2010, 41(06):2435-2443.
[2] 李永乐，汪斌，徐幼麟，等. 侧风作用下静动态车-桥系统气动特性数值模拟研究[J]. 土木工程学报, 2011, 44(S1): 87-94.
LI Yong-le, WANG Bin, XU You-lin, et al. Numerical simulation of aerodynamic characteristics for static and dynamic vehicle-bridge system under cross wind [J]. China Civil Engineering Journal, 2011, 44(S1): 87-94.
[3] Bettle J, Holloway A G L, Venart J E S. A computational study of the aerodynamic forces acting on a tractor-trailer vehicle on a bridge in cross-wind[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2003, 91(5): 573-592.
[4] 于梦阁，张继业，张卫华. 基于可靠性的高速列车横风安全性分析[J]. 振动与冲击, 2013, 32(20): 90-96.
YU Meng-ge， ZHANG Ji-ye， ZHANG Wei-hua. Reliability-based operating safety analysis for high-speed trains under cross stochastic winds [J]. Journal of Vibration and Stock, 2013, 32(20): 90-96.
[5] Baker C. The flow around high speed trains[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2010,98(6-7):277-298.
[6] 金学松，郭俊，肖新标，等. 高速列车安全运行研究的关键科学问题[J]. 工程力学, 2009, 26(S2): 8-22.
JIN Xue-song, GUO Jun, XIAO Xin-biao, et al. Key scientific problems in the study on running safety of high speed trains [J]. Engineering Mechanics, 2009, 26(S2):8-22.
[7] M Suzuki, K Tanemoto, T Maeda. Aerodynamic characteristics of train/vehicles under cross winds[J]. Journal of Wind Engineering and Industrial Aerodynamics,2003,91(01):209-218.
[8] 刘庆宽, 杜彦良.日本列车横风和强风对策研究[J].铁道学报,2008(01):82-88.
LIU Qing-kuan, DU Yan-liang. Train-crosswind and strong wind countermeasure research in japan [J]. Journal of the China Railway Society, 2008, 30(1):82-88.
[9] 葛盛昌，尹永顺. 新疆铁路风区列车安全运行标准现场试验研究[J]. 铁道技术监督, 2006, 34(4): 9-11.
GE Sheng-chang, YIN Yong-shun. Studying the field tests on the safety operation standards for trains running through the windy area in Xinjiang [J]. Railway Quality Control, 2006, 34(4): 9-11.
[10] 张强，杨贤为，张永山，等. 京沪沿线强降水频率及大风频率分布特征[J]. 气象科技, 2003, 31(1): 45-49.
ZHANG Qiang，YANG Xian-wei，ZHANG Yong-shan，et a1.The analysis of the distribution characteristics of severe precipitation frequency and strong wind frequency along the high speed railway from Beijing to shanghai．Meteorological Science and Technology, 2003, 31(1): 45-49.
[11] 韩万水，赵越，刘焕举，等. 风-车-桥耦合振动研究现状及发展趋势[J]. 中国公路学报, 2018, 31(07): 1-23.
HAN Wan-shui, ZHAO Yue, LIU Huan-ju, et al. Research and development trends of wind-vehicle-bridge coupling vibration systems [J]. China Journal of Highway and Transport, 2018, 31(07): 1-23.
[12] 李永乐，向活跃，强士中. 风-列车-桥系统耦合振动研究综述[J]. 中国公路学报, 2018, 31(07): 24-37.
LI Yong-le, XIANG Huo-yue, QIANG Shi-zhong. Review on coupling vibration of wind-vehicle-bridge systems[J]. China Journal of Highway and Transport, 2018, 31(07): 24-37.
[13] 刘庆宽. 强风环境下列车运行安全保障体系的初步研究[J]. 工程力学，2010，27( S1) : 305-310．
LIU Qing-kuan．Study on the system to ensure train operation safety under strong wind[J]. Engineering Mechanics, 2010,27( S1) : 305-310．
[14] Kozmar H, Procino L, Borsani A, et al. Sheltering efficiency of wind barriers on bridges [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2012,107, 274–284.
[15] Kozmar, H., Procino, L., Borsani, A, et al. Optimizing height and porosity of roadway wind barriers for viaducts and bridges [J]. Engineering Structures, 2014, 81, 49–61.
[16] Cornelis W M , Gabriels D . Optimal windbreak design for wind-erosion control[J]. Journal of Arid Environments, 2005, 61(2):315-332.
[17] Heisler G M , Dewalle D R . Effects of windbreak structure on wind flow[J]. Agriculture Ecosystems & Environment, 1988, 22:41-69.
[18] Seginer I.D.O. Windbreak drag calculated from the horizontal velocity field[J]. Boundary-Layer Meteorology, 1972, 3(1):87-97.
[19] Dong Z , Luo W , Qian G , et al. A wind tunnel simulation of the turbulence fields behind upright porous wind fences[J]. Journal of Arid Environments, 2010, 74(2):193-207.
[20] 向活跃, 李永乐, 胡喆, 等. 铁路风屏障对轨道上方风压分布影响的风洞试验研究[J]. 实验流体力学, 2012, 26(6):19-23.
XIANG Huo-yue, LI Yong-le, HU Zhe, et al. Effects of wind screen on wind pressure distribution above railway tracks by wind tunnel test [J]. Journal of Experiments in Fluid Mechanic, 2012, 26 (6):19-23.
[21] X.H. He, Y.F.Zou, H.F.Wang, et al. Aerodynamic characteristics of a trailing rail vehicles on viaduct based on still wind tunnel experiments.[J]:Journal of Wind Engineering and Industrial Aerodyn,2014,2014(135):22-33.
[22] 何旭辉, 邹云峰, 杜风宇. 风屏障对高架桥上列车气动特性影响机理分析[J]. 振动与冲击, 2015, 34(3):66-71.
HE Xu-hui, ZOU Yun-Fing, DU Fing-Yu. Mechanism analysis of wind barriers effects on aerodynamic characteristics of a train on viaduct [J]. Journal of Vibration and Stock, 2015, 34(3): 66-71.
[23] 何玮, 郭向荣, 邹云峰, 等. 风屏障透风率对车-桥系统气动特性影响的风洞试验研究[J]. 振动与冲击, 2015, 34(24):93-97.
HE Wei, GUO Xiang-rong，ZOU Yun-feng, et al. Wind tunnel test on the effect of wind barrier porosity on train-bridge system [J]. Journal of Vibration and Stock, 2015, 34(24):93-97.
[24] Xuhui He, Kang Shi, Teng Wu, et al. Aerodynamic performance of a novel wind barrier for train-bridge system [J]. Wind and Structures,2016,23(3):171-189.
[25] Guo W, Xia H, Karoumi R, et al. Aerodynamic effect of wind barriers and running safety of trains on high speed railway bridges under cross winds[J]. Wind and Structures, 2015, 20(2): 213–236.
[26] 王玉晶, 郭薇薇, 夏禾, 等. 考虑风屏障效应的车桥系统三分力系数风洞试验研究[J]. 振动与冲击, 2018, 37(20):93-99.
WANG Yu-jing, GUO Wei-wei, XIA He, et al. Wind tunnel test of tri-component coefficients for a train-bridge system considering wind barrier effect[J]. Journal of Vibration and Stock, 2018, 37(20):93-99.
[27] 周奇, 朱乐东, 郭震山. 曲线风障对桥面风环境影响的数值模拟[J]. 武汉理工大学学报, 2010, 032(010):38-44.
ZHOU Qi, ZHU Le-dong, GUO Zhen-shan. Numerical simulation for curve windshield barrier effects on wind environment around bridge deck[J]. Journal of Wuhan University of Technology,2010,32(10):38-44.
[28] L.J.Hagen, E.L.Skidmore. Turbulent velocity fluctuations and vertical flow as affected by windbreak porosity. Transactions of the ASAE, 1971, 14(4), 0634–0637.
[29] Lee S J , Park K C , Park C W . Wind tunnel observations about the shelter effect of porous fences on the sand particle movements [J]. Atmospheric Environment, 2002, 36(9):1453-1463.
[30] Xuhui He, Lei Zhou, Zhengwei Chen, et al. Wind barrier effects on the flow field and aerodynamic forces of a train-bridge system.[J]:Journal of Rail and Rapid Transit,2019,233(3):283-297.
[31] 杨明智, 袁先旭, 鲁寨军, 等. 强侧风下青藏线列车气动性能风洞试验研究[J]. 实验流体力学, 2008(01): 76-79.
YANG Ming-zhi, YUAN Xian-xu, LU Zhai-jun, et a1. Experimental study on aerodynamic characteristics of train running on qinghai-tibet railway under cross winds [J]. Journal of Experiments in Fluid Mechanics, 2008(01):76-79.
[32] 张亮, 张继业, 李田, 等. 横风下高速列车的非定常气动特性及安全性[J]. 机械工程学报, 2016, 52(6): 124-135.
ZHANG Liang, ZHANG Jiye, LI Tian, et al. Unsteady aerodynamic characteristics and safety of high-speed trains under crosswinds [J]. Journal of Mechanical Engineering, 2016, 52(6): 124-135.
[33] 刘勇, 戴公连, 康崇杰. 中国高速铁路简支梁综述[J].铁道科学与工程学报,2015,12(02):242-249.
LIU Yong, DAI Gong-lian, KANG Chong-jie. Comprehensive comments on simply-supported girders of high-speed railway in China [J]. Journal of Railway Science and Engineering, 2015,12(02):242-249.
[34] JTG/TD3360-01-2018,公路桥梁抗风设计规范[S].
JTG/TD3360-01-2018, Wind-resistent design specification for highway bridges [S].
[35] 種本勝二, 铃木実, 前田逹夫. 横風に對する車輛の空氣力學的特性風洞試驗[R]. 日本鐡道綜研報告, 1999, 13( 12) : 47-52．