摘要
各种结构都有其经济适用范围,通常跨度100m左右的梁式结构用钢量约为80kg/m2[1].一维张弦梁结构亦属于梁式结构,其用钢量与跨度的平方成正比.本文对一维张弦梁结构设计中的几个问题进行了探讨,包括拉索与撑杆的转角摩阻、拉索预应力的合理取值和安全系数判定、结构自重与跨度的近似关系以及两种计算模型的分析比较等,可供工程设计者参考.
Generally, the steel consumption of beam structures is about 80kg/m^2 when its span is about 100 meters. Plane beam string structures belong to beam structures, and the steel consumption is directly proportional to square of span. In this paper, several problems of design of plane beam string structures have been discussed, including how to consider the corner friction, the reasonable value and evaluation of safety factor of prestressed cable, approximate relationship between self-weight and its span, and the comparison between two calculation models etc. Conclusions obtained can be refered by designers.
出处
《空间结构》
CSCD
北大核心
2007年第2期38-40,43,共4页
Spatial Structures
