楼面活荷载、风荷载的频遇值和准永久值的确定

DETERMINATION OF FREQUENT VALUE AND QUASI-PERMANENT VALUE OF FLOOR LIVE LOAD AND WIND LOAD

1.
1. Department of Civil Engineering,Dalian University of Technology,Dalian 116024,China;
2.
2. College of Water Conservancy,Shenyang Agricultural University,Shenyang 110866,China

摘要: 现行GB50009-2001《建筑结构荷载规范》规定的频遇值系数和准永久值系数是根据工程经验确定的,没有严格的统计基础。针对此种情况,按照GB 500092001的统计定义,建立频遇值系数和准永久值系数与平均超越时间和设计基准期比值的关系,得到楼面活荷载和风荷载的频遇值系数和准永久值系数。按统计方法得出的楼面活荷载频遇值系数比GB 500092001规定的值稍大,其准永久值系数比GB 500092001规定的值小,风荷载频遇值系数则稍大于规定。
- 建筑结构 /
- 荷载 /
- 频遇值 /
- 准永久值
Abstract: The factor of frequent value and quasi-permanent value given in the current load codes were determined onthe basis of engineering judgment rather than statistical definition. By establishing the relationships between the ratioof mean time of exceedance to design reference period and the factor of frequent value and quasi-permanent value, thefactor of frequent value and quasi-permanent value for live load and wind load on floor were determind. It was shownthat the factors of the frequent value and the quasi-permanent value for live loads on floor determined in this paper arelarger and smaller than those given in current codes, respectively, and the factor of the frequent value for wind loaddetermined was slightly larger than that provided in current codes.
- building structure /
- load /
- frequent value /
- quasi-permanent value