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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (5): 295-299.

所属专题： 农业气象

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

辽宁省日光温室雪荷载分布

罗新兰 于红 黎贞发 李春 刘淑梅   

  • 收稿日期:2011-08-02 修回日期:2011-08-22 出版日期:2012-02-15 发布日期:2012-02-15
  • 基金资助:

    公益性（气象）科研专项“设施农业气象灾害预警与防御关键技术”。

The Distribution of Snow Load above Solar Energy Greenhouse in Liaoning Province

  • Received:2011-08-02 Revised:2011-08-22 Online:2012-02-15 Published:2012-02-15

PDF (PC)

943

摘要：

为了计算出近年辽宁省日光温室这种特殊几何屋面建筑所受的基本雪压及雪荷载分布情况，利用辽宁省30年冬季降水数据，使用矩法、耿贝尔参数估计方法对极值I型分布函数的参数进行估计，比较参数优良性指标，进而计算30年一遇最大降雪量及基本雪压，结合辽宁省日光温室结构特点，确定日光温室积雪分布系数，最终得出辽宁省各地区日光温室雪荷载分布。结果表明：辽宁省30年重复期实际基本雪压与建筑规范中基本雪压标准值差距较大；辽宁省日光温室雪荷载范围为0.28~0.79 kN/m2。其中，以鞍山、岫岩、本溪、沈阳等中部地区雪荷载最大，由此向东西南北4个方向雪荷载逐渐减小。

关键词: 农村, 农村, 人力资源, 中国西部

Abstract:

In order to calculate the basic snow pressure and snow load of solar greenhouse with special geometrical construction in Liaoning Province, the present study utilized the 30 years of winter precipitation data of Liaoning Province, and the snow load to solar energy greenhouse of various cities in Liaoning was statistically analyzed, meanwhile parameters of extreme value type I distribution were calculated through the Moment method and the Gumbel method, respectively. Through comparing the optimization benign index of parameters, and then calculated the deepest snow and the basic snow pressure with the return period of 30 years, Combined with the structure characteristics of solar greenhouse in Liaoning Province, the distribution of snow pressure factor was determined, with which the snow load to solar energy greenhouse in cities of Liaoning was determined. It was found that the real basic snow press was different from which of standard load code; the range of snow load on solar energy greenhouse in Liaoning Province was 0.28-0.74 kN/m2. The maximum of basic snow press appeared in the central regions of Liaoning Province, including Anshan, Xiuyan, Benxi and Shenyang, the snow load toward east, west, south and north decreased gradually.