Analysis of wind pressure characteristics of typical agricultural greenhouse buildings on tropical islands  

作　　者：Bin Huang Jinke Liu Zhengnong Li Wenxiang Wang Xiangjun Wang Xijie Liu Tianyin Xiao 

机构地区：[1]School of Civil Engineering and Architecture,Hainan University,Haikou 570228,China [2]Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education,Hunan University,Changsha 410082,China [3]College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,China

出　　处：《Advances in Aerodynamics》2024年第1期593-613,共21页空气动力学进展(英文)

基　　金：This research was supported by the National Natural Science Foundation of China(52068019);the Hainan Provincial Natural Science Foundation of China(522RC605,520QN231 and 521RC502).

摘　　要：Existing studies about wind pressure on agricultural greenhouse buildings concentrate on the mean wind pressure while ignoring the systematic research on fluctuating wind pressure characteristics and the influence of roof shape on the wind pressure characteristics,which are closely associated with the wind-induced damage mecha-nism.In this study,two typical agricultural greenhouse buildings on tropical islands are selected as prototypes to conduct pressure measurement experiments in the wind tunnel.Based on the wind pressure time series for the two greenhouses,the mean and fluctuating wind pressure distribution pattern and the localized high-pressure generation mechanism are analyzed.Then,the shape coefficient of the two green-houses is compared in depth to the standards from four countries.Besides,wind pressure non-Gaussian determination criteria for agricultural greenhouse buildings considering the roof shape and wind directions are proposed.Lastly,the differences in wind pressure spectra on the roofs and walls of the two greenhouses are sum-marized.The results indicate the roof shape has a significant influence on the wind pressure characteristics.Compared with the pitched roof,the vaulted roof will increase the suction effect on the windward front zone and the middle area,mitigate the suc-tion impact on the leeward roof,and weaken the wind pressure non-Gaussian charac-teristics.The experimental shape coefficient of the pitched-roof greenhouse is basically consistent with the standard from the U.S.,while that of the vaulted-roof greenhouse has some deviation from the existing standards.The results provide a theoretical basis for the wind-resistant design of agricultural greenhouse buildings on tropical islands.

关 键 词：Tropical island Agricultural greenhouse building Wind tunnel test Wind load shape coefficient Wind pressure characteristic Wind pressure spectrum 

分 类 号：F83[经济管理—金融学]