CAJ | 학술논문

风荷载是对温室结构影响最大、存在最为普遍的可变荷载，不同布置形式的Venlo型温室对风荷载的敏感程度存在差异。为全面掌握其表面风荷载分布规律，基于CFD 计算平台，选取 Realizable k-ε湍流模型和 B 类地貌作为研究的共同基础，对跨度分别为1跨、3连跨、5连跨和10连跨的 Venlo 型温室在0°，30°，60°和90°不同风向角情况下的表面风压分布情况进行数值模拟计算，求得相应的风压系数。结果表明：相同风力条件下，风向、跨度不同，温室表面风压分布也各不同；其中，单跨和斜风布置为最不利的布置形式。模拟计算结果为 Venlo型温室设计时风荷载取值提供了参考，并提出最优布置形式。
풍하재시대온실결구영향최대、존재최위보편적가변하재，불동포치형식적Venlo형온실대풍하재적민감정도존재차이。위전면장악기표면풍하재분포규률，기우CFD 계산평태，선취 Realizable k-ε단류모형화 B 류지모작위연구적공동기출，대과도분별위1과、3련과、5련과화10련과적 Venlo 형온실재0°，30°，60°화90°불동풍향각정황하적표면풍압분포정황진행수치모의계산，구득상응적풍압계수。결과표명：상동풍력조건하，풍향、과도불동，온실표면풍압분포야각불동；기중，단과화사풍포치위최불리적포치형식。모의계산결과위 Venlo형온실설계시풍하재취치제공료삼고，병제출최우포치형식。
The wind load is variable load which has the largest influence and most general existance on the greenhouse structure .Different layout forms of Venlo-type greenhouse has differences on the sensitive extent of wind load .In order to grasp comprehensively the distributional regulation of surface wind load , the passage selects Realizable k-εturbulence nodal and B-type geomorphology for common basis of research based on the CFD calculation platform .Numerical simula-tion respectively to one span,three multi-span,five multi-span and ten multi-span Venlo greenhouse at 0°, 30°, 60° and 90 °has been done for the surface wind pressure in different wind direction and obtain the corresponding wind pres -sure coefficient .The results show that:the same wind conditions , different span and wind direction , the wind pressure distribution of greenhouse surface is also different;the single span and oblique wind is arranged to layout the most unfa-vorable .The simulation results for Venlo type greenhousedesign wind load value for reference , and put forward the opti-mum layout .