摘要
从调查中原地区城镇住宅楼面活荷载出发,建立了持久性及临时性活荷载概率模型。经检验,统计荷载均服从极值I型分布。从调查统计所得的活荷载统计参数出发,根据Turkstra荷载组合原则,得出中原地区城镇住宅建筑结构在设计基准使用期内活荷载组合最大值的统计参数。针对不同使用功能的房间,分别按照79.1%分位值和97.4%分位值计算出代表各类型房间的楼面活荷载标准值,并与荷载规范中住宅楼面活荷载标准值的单一取值相比。计算结果表明,与原规范值(GBJ9-87)相比,不同使用功能房间的活荷载标准值是不同的,有高有低,且活荷载标准值应有所提高,这也是与新规范值(GB50009-2001)相一致的。结果反映了中原地区城镇住宅不同使用功能房间活荷载标准值的变化,可为荷载规范的进一步修订提供参考。
Based on the survey of the floor live loads of residential buildings in the central plains region, probability models for both the durable and temporary live loads are established. The hypothetical distributions are tested with X^2 tests and the statistical loads are found to follow an extreme I-type distribution in each case. Based on the statistical parameters of the permanent live loads and the temporary live loads, also the Turkstra load combination principle, the maximum value of LT statistical parameters for live loads combinations is obtained for design of the residential buildings in the central plains region. For a room with different functions, the standard values, which represent the floor live loads of the room with the specified functions, are calculated in accordance with 79.1%-fractile and 97.4% fractile, respectively. These standard values of residential floor live loads are compared with those specified in the load criteria of the design code. The analysis results show that, when compared with the previous criterion （GBJ 9-87） , a room with different functions has different standard values which may be higher or lower than the value given in the criterion. Therefore, standard values of the floor live loads should be increased. This conclusion is consistent with the new criterion （GB 50009-2001） .
出处
《土木工程学报》
EI
CSCD
北大核心
2006年第5期29-34,64,共7页
China Civil Engineering Journal
基金
国家"十五"科技攻关项目(2002BA806B-4-3)
关键词
中原地区
住宅
活荷载
调查
统计
分析
central plains region
residential building
live load survey
statistics
analysis
