包头市日光温室风灾预警指标研究

Study on Early Warning Index of Wind Disaster in Baotou Solar Greenhouse

风灾是对日光温室生产影响较大的主要气象灾害之一。风荷载作为温室主要结构设计荷载,直接影响温室结构的安全性和经济性。文章利用包头市4个国家站1981—2015年的10 min平均最大风速资料,根据包头本地日光温室的特点,计算了包头市各旗县和市区不同重现期的风速极值和温室风荷载,得出包头市各地风压和风速的临界指标,并以此为依据制定了包头市日光温室大风灾害预警指标。

Wind disaster is one of the major meteorological disasters that have a great impact on solar greenhouse production.As the main structural design load of greenhouse,wind load directly affects the safety and economy of greenhouse structure.Based on the 10-minute average maximum wind speed data from 1981 to 2015 from four national stations in Baotou and the characteristics of local solar greenhouse in Baotou,this paper calculates the extreme wind speed values and greenhouse wind load in different reoccurrence periods in each county and urban area of Baotou,and obtains the critical indexes of wind pressure and wind speed in all parts of Baotou.Based on this,the early warning index of wind disaster in baotou solar greenhouse was developed.