基于K-means聚类的风压系数快速分区方法

李丹煜; 杨庆山; 田玉基

doi:10.6052/j.issn.1000-4750.2013.11.1115

基于K-means聚类的风压系数快速分区方法

北京交通大学土木建筑工程学院结构风工程与城市风环境北京市重点实验室,北京 100044

基金项目: 国家自然科学基金重大研究计划集成项目(91215302); 高等学校学科创新引智计划项目(B13002); 中央高校基本科研业务费专项经费; 项目(2013YJS058)

详细信息

作者简介:
杨庆山(1968-), 男, 河北人, 教授, 博士, 博导, 长江学者, 从事结构风工程研究(E-mail:qshyang@bjtu.edu.cn); 田玉基(1967-), 男, 山东人, 教授, 博士, 博导, 从事结构风工程研究(E-mail:yujitian@bjtu.edu.cn).

通讯作者:
李丹煜(1988-), 女(朝鲜族), 辽宁人, 博士生, 从事结构风工程研究(E-mail:11115275@bjtu.edu.cn).

中图分类号: TU312.1；TU311.41
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- 文章访问数: 311
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出版历程
- 收稿日期: 2013-11-28
- 修回日期: 2014-06-15
- 刊出日期: 2014-12-24

A QUICK ZONING METHOD FOR WIND PRESSURE COEFFICIENTS BASED ON K-MEANS CLUSTERING

Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

摘要

摘要: 提出了一种基于K-means聚类的风压系数快速分区方法。K-means聚类要求事先给出聚类数目k值,在风压系数分区应用中存在局限性。采取两种措施进行改进：一是预先限制k值范围,实现所有k值下的快速聚类。二是采用有效性指标确定最佳k值。分别以平屋盖、鞍形屋盖的两种代表性来流工况为例,说明和验证了风压系数分区方法。结果表明：分区方法能很好地完成不同几何形状屋盖、不同来流工况、不同类型的风压系数分区。
- 风压系数分区 /
- -means聚类 /
- 平屋盖 /
- 鞍形屋盖 /
- 风洞试验
Abstract: A quick zoning method for the wind pressure coefficient has been proposed, which is based on K-means clustering. K-means clustering has its limitations in wind pressure coefficient partition applications, because the method requires k values (cluster numbers) in advance. Two measures have been taken to improve the method. One measure limits the k value at first to realize fast clustering under all k values. Another measure is to use the validity index to determine the optimal k value. Flat roof and saddle roof have been chosen as the example conditions to illustrate and verify this zoning method for the wind pressure. The results show that the improved method can properly develop wind pressure coefficient zoning for roofs of various geometries in a variety of conditions.
- wind pressure coefficient zoning /
- -means clustering /
- flat roof /
- saddle roof /
- wind tunnel test

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参考文献(17)

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文章访问数: 311
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基于K-means聚类的风压系数快速分区方法

作者简介: 杨庆山(1968-), 男, 河北人, 教授, 博士, 博导, 长江学者, 从事结构风工程研究(E-mail:qshyang@bjtu.edu.cn); 田玉基(1967-), 男, 山东人, 教授, 博士, 博导, 从事结构风工程研究(E-mail:yujitian@bjtu.edu.cn).

通讯作者: 李丹煜(1988-), 女(朝鲜族), 辽宁人, 博士生, 从事结构风工程研究(E-mail:11115275@bjtu.edu.cn).

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出版历程

A QUICK ZONING METHOD FOR WIND PRESSURE COEFFICIENTS BASED ON K-MEANS CLUSTERING

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出版历程

目录

作者简介:
杨庆山(1968-), 男, 河北人, 教授, 博士, 博导, 长江学者, 从事结构风工程研究(E-mail:qshyang@bjtu.edu.cn); 田玉基(1967-), 男, 山东人, 教授, 博士, 博导, 从事结构风工程研究(E-mail:yujitian@bjtu.edu.cn).

通讯作者:
李丹煜(1988-), 女(朝鲜族), 辽宁人, 博士生, 从事结构风工程研究(E-mail:11115275@bjtu.edu.cn).