针对风场特性测量的地形模型边界过渡段形式问题,参考航空飞行器过渡段设计理论,提出了适用于地形模型边界过渡的连续性设计原则,即坐标连续、一阶连续和二阶连续。根据该连续性原则,还提出了一种基于双曲正切函数曲线的过渡段形式,并通过CFD数值模拟方法,与目前广泛采用的斜坡过渡、一阶过渡(维多辛斯基曲线)进行了对比,证明了该过渡段形式的有效性和优越性。同时还针对不同长度的边界过渡段进行了研究,结果表明随着过渡段长度的增加,气流过渡效果越好。所提出的地形模型过渡段连续性设计原则和曲线形式,为地形模型边界过渡段的设计提供了理论依据和案例支持,具有重要的意义。
Abstract
Abstract:Aiming at boundary transition of a terrain model for wind field characteristics measurement, referring to the design theory of an aerospace vehicle, the continuity principle applying for the boundary transition of the terrain model was proposed, namely coordinate continuity, first-order continuity, and second-order continuity.Depending on this principle, a kind of transitional curve based on the hyperbolic tangent function was also proposed and compared with slope transition and first-order transition (vidosinsky curve) using the CFD (computational fluid dynamics) numerical simulation method.Meanwhile, the proposed boundary transition with different lengths was studied, and the results indicate that with the increase of transitional length, the air flows over the boundary transition more fluently.The continuity principle and second-order curve proposed in this paper are of great significance for the design of boundary transition of a terrain model.
关键词
风场特性 /
地形模型 /
边界过渡 /
曲线形式 /
二阶连续性
{{custom_keyword}} /
Key words
wind field characteristics /
terrain model /
boundary transition /
curve pattern /
second-order continuity
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] JTG/T D60-01-2004. 公路桥梁抗风设计规范[S]. 北京:人民交通出版社,2004.
JTG/TD60-01-2004, Wind-resistant Design Specification for Highway Bridges[S].
[2] 张明金,李永乐,唐浩俊,等. 高海拔高温差深切峡谷桥址区风特性现场实测[J]. 中国公路学报, 2015, 28(3): 60-65.
ZHANG Ming-jin, LI Long-le, TANG Hao-jun, et al. Field measurement of wind characteristics at bridge sites in deep gorge with high temperature difference [J]. China journal of highway and transport, 2015, 28(3): 60-65.
[3] 黄国庆,彭留留,廖海黎,等. 普立特大桥桥位处山区风特性实测研究[J]. 西南交通大学学报, 2016, 51(2): 349-356.
HUANG Guoqing, PENG Liuliu, LIAO Haili, et al. Field measurement study on wind characteristics at Puli Great Bridge site in mountainous area [J]. Journal of Southwest Jiaotong University, 2016, 51(2): 349-356.
[4] 刘明,廖海黎,李明水,等. 西堠门大桥桥址处风场特性研究[J]. 铁道建筑, 2010 (5): 18-21.
LIU Ming, LIAO Haili, LI Mingshui, et al. Study on wind field characteristic in site of Xihoumen Bridge [J]. Railway Engineering, 2010 (5): 18-21.
[5] 白桦,李加武,刘健新. 西部河谷地区三水河桥址风场特性试验研究[J]. 振动与冲击, 2012, 31(14): 74-78.
BAI Hua, LI Jiawu, LIU Jianxin. Experimental study on wind field characteristics of Sanshui river bridge site located in west valley region [J]. Journal of vibration and shock, 2012, 31(14): 74-78.
[6] 王凯,廖海黎,刘君. 山区峡谷大跨钢桁梁桥抗风特性试验研究[J]. 振动与冲击, 2014, 33(19): 169-174.
WANG Kai, LIAO Haili, LIU Jun. Wind resistance tests for long-span steel truss bridges across gorges of mountainous area [J]. Journal of vibration and shock, 2014, 33(19): 169-174.
[7] 张玥,唐金旺,周敉,等. 峡谷复杂地形风场空间分布特性试验研究[J]. 振动与冲击, 2016, 35(12): 35-40,49.
ZHANG Yue, TANG Jin-wang, ZHOU Mi, et al. Experimental research on the spatial distribution characteristics of wind field in valley terrain [J]. Journal of vibration and shock, 2016, 35(12): 35-40, 49.
[8] Hongmiao Jing, Haili Liao, Cunming Ma, et al. Influence of elevated water levels on wind field characteristics at a bridge site [J]. Advances in Structural Engineering, 2019, 1:13. DOI: 10.1177/1369433218825048.
[9] Chowdhury Mohammad Jubayer, Horia Hangan. A hybrid approach for evaluating wind flow over a complex terrain [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2018, 175:65-76.
[10] 胡朋, 李永乐, 廖海黎. 山区峡谷桥址区地形模型边界过渡段形式研究[J]. 空气动力学报, 2013, 31(2): 231-238.
HU Peng, LI Yong-le, LIAO Hai-li. Shape of boundary transition section for mountains-gorge bridge site terrain model [J]. Acta aerodynamica sinica, 2013, 31(2): 231-238.
[11] 李永乐, 蔡宪棠, 唐康, 等. 深切峡谷桥址区风场空间分布特性的数值模拟研究[J]. 土木工程学报, 2011, 44(2):116-122.
Li Yongle, Cai Xiantang, Tang Kang, et al. Study of spatial distribution feature of wind fields over bridge site with a deep-cutting gorge using numerical simulation [J]. China civil engineering journal, 2011, 44(2): 116-122.
[12] Sarah J. Wakes, Tanja Maegli, Katharine J. Dickinson, et al. Numerical modelling of wind flow over a complex topography [J]. Environmental Modelling and Software, 2010, 25:237-247.
[13] Hehe Ren, Shujin Laima, Wen-Li Chen, et al. Numerical simulation and prediction of spatial wind field under complex terrain [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2018, 180:49-65.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}