平屋盖女儿墙防风效果的数值模拟与优化研究  

Numerical simulation and optimization study of the wind effects of parapets on flat roofs

作　　者：邱冶[1] 王媛媛 Qiu Ye;Wang Yuanyuan(College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学土木与交通学院,江苏南京210098

出　　处：《山西建筑》2018年第31期34-36,共3页Shanxi Architecture

基　　金：国家自然科学基金青年基金项目(51808194);江苏省自然科学基金项目(BK20170880);中国博士后科学基金资助项目(2016M591754)

摘　　要：基于FLUENT软件,分析了女儿墙高度对平屋盖表面平均风压分布的影响,同时以屋盖表面负压峰值最小为优化目标,采用梯度算法对女儿墙的孔洞率进行了优化。结果表明:当女儿墙高度为0～0.067H时(H为屋盖高度),最优孔洞率为38.2%～52.3%。Based on FLUENT software,the influences of the parapet height on the mean wind pressures on flat roofs with parapets were investigated.Then,the porosity optimization of parapets was carried out by using the gradient algorithm,the objective of which is to minimize the peak negative pressures on the roof.The results showed that,when the parapet height is 0~0.067H(H is the roof height),the optimal porosity is in-between 38.2%~52.3%.

关 键 词：平屋盖 女儿墙 数值模拟 孔洞率优化 

分 类 号：TU312.1[建筑科学—结构工程]