三幅邻近桥梁结构气动干扰效应的数值模拟及实验研究

doi:10.12141/j.issn.1000-565X.210051

华南理工大学学报(自然科学版) ›› 2021, Vol. 49 ›› Issue (12): 101-112.doi: 10.12141/j.issn.1000-565X.210051

所属专题： 2021年交通运输工程

三幅邻近桥梁结构气动干扰效应的数值模拟及实验研究

张翔¹颜全胜¹贾布裕¹刘慕广^1,2余晓琳¹

1.华南理工大学土木与交通学院，广东广州 510640;2.华南理工大学亚热带建筑科学国家重点实验室，
广东广州 510640

收稿日期:2021-01-29 修回日期:2021-04-26 出版日期:2021-12-25 发布日期:2021-12-01
通信作者: 贾布裕(1983-)，男，博士，副教授，主要从事桥梁振动及安全评估研究。 E-mail:ctjby@scut.edu.cn
作者简介:张翔(1994-)，男，博士生，主要从事大跨度桥梁抗风研究。
基金资助:
国家自然科学基金资助项目（51608207，51978285）；广东省自然科学基金资助项目（2019A1515011941）；国家留学基金资助项目（201806155102，201906155028）

The Study of Wind Tunnel Test and Numerical Simulation of Aerodynamic Interference on Adjacent Three Separated Deck Bridges

ZHANG Xiang¹ YAN Quansheng¹ JIA Buyu¹ LIU Muguang^1,2 YU Xiaolin¹

1． School of Civil Engineering and Transportation，South China University of Technology，Guangzhou 510640，Guangdong，China;
2． State Key Laboratory of Subtropical Building Science，South China University of Technology，Guangzhou 510640，Guangdong，China

Received:2021-01-29 Revised:2021-04-26 Online:2021-12-25 Published:2021-12-01
Contact: 贾布裕(1983-)，男，博士，副教授，主要从事桥梁振动及安全评估研究。 E-mail:ctjby@scut.edu.cn
About author:张翔(1994-)，男，博士生，主要从事大跨度桥梁抗风研究。
Supported by:
Supported by the National Natural Science Foundation of China(51608207,51978285),the Natural Science Foundation of Guangdong Province(2019A1515011941) and the China Scholarship Council(201806155102,201906155028)

摘要/Abstract

摘要： 针对三幅邻近桥梁结构，在中幅箱梁和两侧对称组合梁的形心高差与中幅箱梁梁高比值（H/D0）为-2~+2之间的条件下，通过CFD模拟了三主梁的气动干扰效应并进行了风洞试验的局部验证。研究结果表明：在一定高差范围内，下游组合梁对中幅箱梁的脱涡存在抑制作用；在工程实际的固定间距下，三幅邻近桥梁结构各自的气动力均值在文中研究的中幅箱梁高差比范围内均有明显且规律的气动干扰效应，其中中幅箱梁敏感性最强、下游主梁次之、上游截面受影响最小。

关键词:

邻近桥梁, 多幅桥面, 气动干扰, 风洞实验

Abstract: The aerodynamic interference on the adjacent three separated deck bridges in different altitude difference ratios was investigated by CFD and is verified by the wind tunnel test. The altitude difference ratio (H/D0) is within the range of -2 and +2, where H is the difference of centroid height between the middle box beam and the two sides symmetrical composite girders and D0 is the height of the middle box. The numerical simulation results show that the downstream composite beams have an inhibition effect on the vortex shedding of the middle box beams in a certain range of height difference. At the actual spacing in project, the mean values of the aerodynamics of the adjacent three separated deck bridges are interfered with each other obviously and regularly in the range of H/D0 stu-died in this paper. The aerodynamic interference of middle box girder is the largest, that of the downstream girder takes second place, and that of the upstream girder is the least.

Key words:

adjacent bridge, multiple deck, aerodynamic interference, wind tunnel test

中图分类号:

张翔, 颜全胜, 贾布裕, 等. 三幅邻近桥梁结构气动干扰效应的数值模拟及实验研究[J]. 华南理工大学学报(自然科学版), 2021, 49(12): 101-112.

ZHANG Xiang YAN Quansheng JIA Buyu LIU Muguang YU Xiaolin. The Study of Wind Tunnel Test and Numerical Simulation of Aerodynamic Interference on Adjacent Three Separated Deck Bridges[J]. Journal of South China University of Technology(Natural Science Edition), 2021, 49(12): 101-112.

三幅邻近桥梁结构气动干扰效应的数值模拟及实验研究

The Study of Wind Tunnel Test and Numerical Simulation of Aerodynamic Interference on Adjacent Three Separated Deck Bridges

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