[1]王浩,徐梓栋,陶天友,等.基于2008—2015年实测数据的苏通大桥风速风向联合分布分析[J].东南大学学报(自然科学版),2016,46(4):836-841.[doi:10.3969/j.issn.1001-0505.2016.04.027]
 Wang Hao,Xu Zidong,Tao Tianyou,et al.Analysis on joint distribution of wind speed and direction on Sutong Bridge based on measured data from 2008 to 2015[J].Journal of Southeast University (Natural Science Edition),2016,46(4):836-841.[doi:10.3969/j.issn.1001-0505.2016.04.027]
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基于2008—2015年实测数据的苏通大桥风速风向联合分布分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第4期
页码:
836-841
栏目:
交通运输工程
出版日期:
2016-07-20

文章信息/Info

Title:
Analysis on joint distribution of wind speed and direction on Sutong Bridge based on measured data from 2008 to 2015
作者:
王浩徐梓栋陶天友姚程渊李爱群
东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Wang Hao Xu Zidong Tao Tianyou Yao Chengyuan Li Aiqun
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
苏通大桥 结构健康监测系统 风速风向联合分布 基本风速 数理统计方法
Keywords:
Sutong Bridge structural health monitoring system joint distribution of wind speed and wind direction basic wind speed mathematical statistic method
分类号:
U448.27;V321
DOI:
10.3969/j.issn.1001-0505.2016.04.027
摘要:
为充分掌握苏通大桥桥址区基本风速,基于大桥结构健康监测系统(SHMS)运行7年(2008年1月至2015年3月)的实测数据开展了桥址区风速风向联合分布分析.利用安装在主梁跨中上游、跨中下游和南塔塔顶的3个风速仪采集的数据,以1个月作为基本抽样时间间隔,采用阶段极值法抽取极值样本.在进行Gumbel,Frechet和Weibull分布函数的参数估计后,根据风向频度函数得到桥址区风速风向联合分布,据此对桥址区10,50及100年重现期的极值风速进行了推算.结果表明,Weibull概型风速风向联合分布函数较Gumbel和Frechet概型更为合适,考虑风向影响的基本风速使结构抗风设计更加接近实际情况,而苏通大桥抗风设计时所采用的基本风速偏于保守.
Abstract:
In order to fully grasp the basic wind speed at Sutong Bridge site, the joint distribution of the wind speeds and directions on the bridge was analyzed based on the seven-year(Jan. 2008 to Mar. 2015)data recorded by the structural health monitoring system(SHMS). By using the data recorded by three anemometers installed on the upstream and downstream sides of the mid-span of the main girder and at the south pylon top, an extreme value sample was selected by the stage extreme value sampling method using one month as the basic interval. After the parameters of Gumbel, Frechet, and Weibull distribution functions were estimated, the joint distribution of the wind speeds and the wind directions at the bridge site was obtained according to the wind direction frequency function. The extreme wind speeds in 10, 50, and 100-year recurrence intervals at the bridge site were calculated. Results show that the Weibull distribution function is more appropriate than that of Gumbel distribution and the Frechet distribution for analyzing the joint distribution of the wind speeds and directions at the bridge site. Considering the effects of the wind direction on the estimation of the basic wind speed makes structural wind-resistant design more practical, thus the basic wind speed during the design of Sutong Bridge is conservative.

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备注/Memo

备注/Memo:
收稿日期: 2015-11-05.
作者简介: 王浩(1980—),男,博士,研究员,博士生导师,wanghao1980@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2015CB060000)、国家自然科学基金资助项目(51378111,51438002).
引用本文: 王浩,徐梓栋,陶天友,等.基于2008—2015年实测数据的苏通大桥风速风向联合分布分析[J].东南大学学报(自然科学版),2016,46(4):836-841. DOI:10.3969/j.issn.1001-0505.2016.04.027.
更新日期/Last Update: 2016-07-20