摘要
模拟计算获得3~8m板汽车式起重机等效均布活荷载,验算了楼板刚性扩散对结构的有利影响并提出等效动力系数的概念,明确汽车式起重机轮压采用200mm×600mm时可以不考虑动力系数。考虑了各种长宽比下等效均布荷载的折减系数,采用Matlab编程拟合获得反映长宽比的三次拟合多项式,给施工中的计算分析提供指导。
In order to obtain the equivalent uniform live load for automobile crane,the authors simulate some slabs in the ranges of 3 m to 8 m,the concept of equivalent dynamic factor is aroused and the helpful effects due to stiffness is proved,and if this paper takes 200 mm × 600 mm as the overwhelming force of automobile crane,the dynamic factor can be ignored.Considering all kinds of aspect ratio to obtain the equivalent uniform live load reduction factor,and according to the data,The cubic polynomial fitting is used to give the conversion relation between the reduction factor and the aspect ratio,all the result of here can offer a directive function for construction.
出处
《施工技术》
CAS
北大核心
2017年第S2期1354-1357,共4页
Construction Technology
关键词
汽车式起重机
等效均布荷载
动力系数
多项式拟合
automobile cranes
equivalent uniform live load
dynamic factors
polynomial fitting
