轻型四坡野营房屋风压分布特性和体型优化研究  

Wind Pressure Distribution Characteristics and Shape Optimization of Four Slope Camping Houses

作　　者：刘文朋 LIU Wenpeng(School ofCivil Engineering,Chang'an University,Xi'an 710061,China)

机构地区：[1]长安大学建筑工程学院,西安710061

出　　处：《结构工程师》2020年第2期137-143,共7页Structural Engineers

基　　金：总后建筑工程研究基金项目;陕西省自然科学基金项目(2004E204);中央高校科研专项资金项目(2013G3284016)。

摘　　要：为了探究轻型四坡野营房屋风压分布特征及适用的抗风体型,基于流体动力学和大气边界层基本理论,采用FLUENT分析软件和流体动力学分析方法,依据风洞试验数据,分析和探讨湍流模型、网格划分方法和网格数量等关键技术和参数,以高宽比、屋面坡角及风向角为变量参数,采用数值模拟方法模拟48种工况下房屋表面风压分布特征,分析得到其表面风压分布规律。以房屋各分区风荷载系数标准差最小为优化指标,得到抗风性能较好的合理体型,结果表明,优化后的体型各区域的风荷载均有明显的降低。In order to study the wind pressure distribution characteristics of the four slopes camping houses and the reasonable wind resistance types,based on the basic theory of fluid dynamics and atmospheric boundary layer,FLUENT analysis software and fluid dynamics analysis methods is utilized,combining wind tunnel test data,key technologies and parameters such as turbulence model,meshing method,grid number and discrete format,the aspect ratio,roof slope angle and wind direction angle are taken as parameters,and the numerical simulation method was used to simulate the wind pressure distribution characteristics of the house under 48 working conditions,and the surface wind pressure distribution law was analyzed.The minimum standard deviation of wind load coefficient in each part of the house is considered as the optimized index,and the reasonable wind type with good wind resistance performance is obtained.The results show that the wind load of each area of the optimized body shape is significantly reduced.

关 键 词：轻型四坡野营房屋 流体动力学 数值模拟 风压 体型优化 

分 类 号：TU312.1[建筑科学—结构工程]