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[1]王峰,何晗欣,白桦,等.峡谷地区桥位处风参数特性[J].南京工业大学学报(自然科学版),2020,42(03):351-357.
 WANG Feng,HE Hanxin,BAI Hua,et al.Wind parameter characteristics of a bridge located in the gorge area[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2020,42(03):351-357.
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峡谷地区桥位处风参数特性()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
42
期数:
2020年03期
页码:
351-357
栏目:
出版日期:
2020-05-20

文章信息/Info

Title:
Wind parameter characteristics of a bridge located in the gorge area
文章编号:
1671-7627(2020)03-0351-07
作者:
王峰1何晗欣2白桦1王俊1陈鑫明1
1.长安大学 公路学院 风洞实验室,陕西 西安 710064; 2.西安建筑科技大学 土木工程学院,陕西 西安 710055
Author(s):
WANG Feng1HE Hanxin2BAI Hua1WANG Jun1CHEN Xinming1
1. Wind Tunnel Laboratory, School of Highway, Chang’an University, Xi’an 710064, China; 2. School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710064, China
关键词:
风参数特性 桥梁 地形模型 风洞试验
Keywords:
wind parameter characteristic bridge terrain model wind tunnel test
分类号:
U442.5
文献标志码:
A
摘要:
以花江北盘江大桥为工程背景,通过地形模型风洞试验研究峡谷地区桥位处的参数特性,分析某峡谷地区不同风向来流时桥址处平均风剖面、紊流强度和脉动风功率谱变化情况。结果表明:在横桥向来流作用下,跨中位置测站风剖面呈指数规律,但桥塔位置处受周边地形影响较大,风剖面无明显规律,在另一侧横桥向来流作用下情况相似,说明来流发展受地形影响发育不均。整个山区风场的紊流度在空间分布上相关性不大,紊流度的空间分布受地形影响较大,特别是靠近边坡的位置,紊流度数值较大。脉动风功率谱的变化需要考虑周围山地的影响,顺河谷方向的来流在桥面高度处的功率谱与Kaimal谱吻合较好。
Abstract:
The Hua River-Beipan River bridge was selected as the engineering background, the wind parameter characteristics of the bridge in the gorge area were investigated in the wind tunnel test by a terrain model.The characteristics of mean wind speed profile, turbulence intensity and power spectrum in different wind directions were studied. According to the experimental results, the wind profiles of monitoring stations at the middle span of the bridge were found that following the exponential law for the lateral incoming flow. However, the monitoring stations at the locations near the bridge towers were greatly affected by the terrain, and there was no obvious law in the wind profile. The situation was similar for another lateral incoming flow which indicated that the development of incoming flow was unevenly affected by the terrain. The turbulence of the wind field in the whole mountain area had little correlation in spatial distribution. The spatial distribution of turbulence was greatly affected by the terrain, especially near the slopes of the mountain. The characteristic of the wind power spectrum was affected by the shape of mountain. The power spectra of the incoming flow along the river valley at the height of the bridge deck were compared to the Kaimal spectrum.

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相似文献/References:

[1]唐明述.加拿大公路桥梁和大坝的考察报告[J].南京工业大学学报(自然科学版),1987,9(02):124.
 Tang Mingshu.INSPECTION ON HIGHWAYS, BRIDGES AND DAMS IN CANADA[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),1987,9(03):124.

备注/Memo

备注/Memo:
收稿日期:2019-12-16
基金项目:国家自然科学基金(51808053); 陕西省自然科学基金(2018JQ5163,2017JQ5079); 陕西省教育厅专项科研项目(17JK0441); 中央高校基本科研业务费专项资金(300102210212)
作者简介:王峰(1983—),男,讲师,E-mail:wf@chd.edu.cn.
引用格式:王峰,何晗欣,白桦,等.峡谷地区桥位处风参数特性[J].南京工业大学学报(自然科学版),2020,42(3):351-357.
WANG Feng, HE Hanxin, BAI Hua, et al. Wind parameter characteristics of a bridge located in the gorge area[J].Journal of Nanjing Tech University(Natural Science Edition),2020,42(3):351-357..
更新日期/Last Update: 2020-05-31