气象观测数据不足的沿海地区基本风压取值方法研究——以台州市为例
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摘要
基本风压在建筑结构设计中是重要指标,沿海地区风压变化剧烈,基本风压取值应该在区域之间更加细化,但现行规范中规定过于粗略。以东南沿海的台州地区为例,收集和分析了各基准站、基本站和区域站的观测数据,提出区域站气象观测数据不足时基本风压计算方法:采用回归分析的方法,拟合该区域站与基准站观测数据的关系方程,基于国家基准站的历年风速最大值观测数据推测区域站的风速最大值,并计算各详细区域50年一遇的最大风速和基本风压。计算结果与全国风压分布图具有一致性,可作为现行规范的补充和改进的参考,为建筑结构设计提供依据。
The basic wind pressure is an important parameter in the design of the building structure. The wind pressure changes sharply in coastal areas, so the value of basic wind pressure should be more refined between these regions. But the value of wind pressure in current norms is too rough. The observation data are collected in the base stations, the basic stations and the regional stations in Taizhou. The basic wind pressure calculation method is proposed when the regional station meteorological observation data are insufficient.Then the regression analysis method is used to fit the relation equation of the observation data of that regional station and the datum station. Then the extreme value of the wind speed of the regional station is speculated based on the extreme observation data of the annual wind speed of the national datum station. The wind speed parameters were analyzed to calculate the maximum wind speed and basic wind pressure in 50 years.The calculated results were consistent with the national wind pressure distribution map, and can be used as a reference for the supplement and improvement of current codes, providing a basis for the design of building structures.
The basic wind pressure is an important parameter in the design of the building structure. The wind pressure changes sharply in coastal areas, so the value of basic wind pressure should be more refined between these regions. But the value of wind pressure in current norms is too rough. The observation data are collected in the base stations, the basic stations and the regional stations in Taizhou. The basic wind pressure calculation method is proposed when the regional station meteorological observation data are insufficient.Then the regression analysis method is used to fit the relation equation of the observation data of that regional station and the datum station. Then the extreme value of the wind speed of the regional station is speculated based on the extreme observation data of the annual wind speed of the national datum station. The wind speed parameters were analyzed to calculate the maximum wind speed and basic wind pressure in 50 years.The calculated results were consistent with the national wind pressure distribution map, and can be used as a reference for the supplement and improvement of current codes, providing a basis for the design of building structures.
引文
[1]《建筑结构荷载规范》(GB50009-2012)[S].北京:建筑工业出版社,2012:100-119.
[2]Dongbum Kang,Kyungnam Ko,Jongchul Huh.Determination of Extreme Wind Values Using Gumbel Distribution[J]Energy,2015,(86):51-58.
[3]Jon Galsworthy,Duncan Phillips,Peter Irwin et al.Design of Sustainable Asian Supertall Building for Wind[C].Shanghai:CTBUH 2012 9th world congress,2012:408-417.
[4]纪鹏远,邸小坛,徐骋.关于风速概率分布的分析研究[J].建筑科学,2016,32(7):14-18.
[5]金新阳.建筑结构荷载取值水准比较研究与规范修订建议[J].建筑结构,2017,47(7):1-4.
[6]史军,徐家良,谈建国,等.上海地区不同重现期的风速估算研究[J].地理科学,2015,35(9):1191-1197.
[7]ASCE/SEI 7-10 Minimum Design Loads for Buildings and Other Structures[S].American:American Society of Civil Engineers,2010:23-33.
[2]Dongbum Kang,Kyungnam Ko,Jongchul Huh.Determination of Extreme Wind Values Using Gumbel Distribution[J]Energy,2015,(86):51-58.
[3]Jon Galsworthy,Duncan Phillips,Peter Irwin et al.Design of Sustainable Asian Supertall Building for Wind[C].Shanghai:CTBUH 2012 9th world congress,2012:408-417.
[4]纪鹏远,邸小坛,徐骋.关于风速概率分布的分析研究[J].建筑科学,2016,32(7):14-18.
[5]金新阳.建筑结构荷载取值水准比较研究与规范修订建议[J].建筑结构,2017,47(7):1-4.
[6]史军,徐家良,谈建国,等.上海地区不同重现期的风速估算研究[J].地理科学,2015,35(9):1191-1197.
[7]ASCE/SEI 7-10 Minimum Design Loads for Buildings and Other Structures[S].American:American Society of Civil Engineers,2010:23-33.