Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (9): 108-112.doi: 10.3969/j.issn.1000-565X.2010.09.020

• Architecture & Civil Engineering • Previous Articles     Next Articles

Calculation and Analysis of Basic Snow Pressure in Liaoning Province

Zhang Yan-nian1  Zhang Yong2   Wang Yuan-qing1  Shi Yong-jiu1   

  1. 1.Department of Civil Engineering,Tsinghua University,Beijing 100084,China;2.School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,Liaoning,China
  • Received:2009-11-19 Revised:2010-03-19 Online:2010-09-25 Published:2010-09-25
  • Contact: 张延年（1976-），男，副教授，主要从事防震减灾和结构检测加固研究． E-mail:zyntiger@163．com
  • About author:张延年（1976-），男，副教授，主要从事防震减灾和结构检测加固研究．
  • Supported by:

    国家“十一五”科技支撑计划项目（2006BAJ03A02-1）; 中国博士后科学基金资助项目（20090450423）; 建设部科技攻关项目（2009-K3-25）; 沈阳建筑大学省级重点实验室开放基金资助项目（JG-200911）

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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