摘要
探讨了网架自重估算公式中参数的取值问题.根据选定的回归模式,分别对正放四角锥和斜放四角锥共计400个网架施工图进行了分析.经过统计和回归后得到了各级荷载作用下具有95%保证率的参数值以及参数值与短向跨度的关系曲线.在统计和回归分析的基础上,得出了网架自重估算的修正公式.
The parameter problem on the estimated formula for deadweight of spatial trusses was discussed. According to the selected regression mode, analysis was carried out on 400 construction documents of orthogonal square pyramid spatial grids and diagonal square pyramid spatial grids respectively. After statistical and regressive analysis the parameter that ensures 95 percent guarantee rate under different load levels and the curve that reflects the relationship between the parameter and the short span were obtained. Based on the statistical and regressive analysis the modified formula was put forward.
出处
《空间结构》
CSCD
北大核心
2005年第3期54-56,共3页
Spatial Structures
基金
天津市工程建设编制项目(2004B-45)
关键词
网架自重
估算公式
统计分析
回归分析
deadweight of spatial truss
estimated formula
statistical analysis
regressive analysis
