摘要
户内直流场建筑属于重要的大跨度结构,几何尺寸变化多样,体型系数的确定是合理结构设计的前提。首先结合风洞试验与CFD数值模拟技术分析户内直流场建筑屋面的风荷载特性,研究了不同长宽比、高跨比下屋盖表面的平均风压系数分布。通过参数分析发现,随着长宽比增大,屋面受到的风吸力增大,而高跨比对屋面风荷载特性的影响则不明显。为了方便工程设计,对户内直流场建筑表面进行分区,给出典型风向角下不同长宽比屋盖的分区体型系数,可供设计提供依据。
The construction of Indoor DC field is one kind of important span structure,which the geometry is varied and the determination of wind shape coefficients is the premise of reasonable structural design. The combination of wind tunnel test and CFD numerical simulation was made to study the effect of length-span ratio,high-span ratio to average wind pressure coefficient distribution on the surface of the roof. Through parametric analysis,it is found that the wind suction increases with the increase of length-span ratio,while the influence of high-span ratio on wind load characteristics of roof is not obvious. In order to facilitate engineering design,partition the building surface of the HV indoor DC field,regional wind shape coefficients of roof with different length-span ratio under typical wind direction wais given to guide the design of project.
出处
《建筑结构》
CSCD
北大核心
2018年第S1期524-529,共6页
Building Structure
基金
中国电力工程顾问集团有限公司科技项目(DG1-T08-2016)
国家自然科学基金面上项目(51478155)
关键词
风荷载特性
数值模拟
风洞试验
分区体型系数
wind load characteristics
numerical simulation
wind tunnel test
regional wind shape coefficient
