关键词: 基本雪压, 雪荷载模型, 极值I型分布, 矩法, 耿贝尔法, 柯尔莫哥洛夫检测

Abstract:

In this investigation,first,the snow load data of various cities in Liaoning is statistically analyzed accor-ding to the snow data provided by Liaoning Provincial Meteorological Bureau,and the basic snow pressure in Liaoning are calculated through the moment method and the Gumbel method,respectively.Then,the distribution function is tested according to the Kolmogorov criterion.Finally,the calculated results are compared with the values re-commended by current design codes and with the results presented in the correlative literature.It is found that,in most cases,the basic snow pressure calculated by the Gumbel method is more accurate than that by the moment method,that the basic snow pressure in some areas recommended by current codes is too low,so that it should be increased in the next revision of the codes,and that the basic snow pressure in heavy snowstorm areas and on snow-load-sensitive structures should be multiplied by an amplification factor before the next revision of the codes.

Key words: basic snow pressure, snow load model, extreme value type-I distribution, moment method, Gumbel method, Kolmogorov-Smirnove test