辽宁省基本雪压的计算与分析  

Calculation and Analysis of Basic Snow Pressure in Liaoning Province

作　　者：张延年[1] 张勇[2] 王元清[1] 石永久[1] 

机构地区：[1]清华大学土木工程系,北京100084 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《华南理工大学学报（自然科学版）》2010年第9期108-112,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：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)

摘　　要：利用辽宁省气象局提供的降雪资料对辽宁地区各个城市的雪荷载进行统计分析,分别用矩法和耿贝尔法计算出辽宁地区的基本雪压,并采用柯尔莫哥洛夫检验法对分布函数进行检验,最后分别与规范取值及相关文献的计算结果进行对比分析。结果表明:大多数情况下,采用耿贝尔法计算的基本雪压较为准确;规范中一些地区的基本雪压取值明显偏小,建议在修订时适当提高;在基本雪压规范取值未修订前,对于雪灾严重地区或对雪荷载敏感的结构类型,建议在原基本雪压基础上乘以一定的放大系数.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.

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 

分 类 号：TU14[建筑科学—建筑理论]