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.