部分预应力钢筋混凝土桁架的受力分析及应用研究

Analysis and application of pre-stressed reinforced concrete truss

在大跨结构中,工程师们往往倾向于采用钢结构,这是由于钢结构自重轻,强度高的特点,但同时也付出了比混凝土结构更大的成本。在分析大跨度结构的特点时发现,部分预应力钢筋混凝土桁架结构不但能解决大跨重载问题,而且具有经济性良好、与主体结构连接方便、整体性好等优势。通过一具体项目的结构设计来阐述部分预应力钢筋混凝土桁架的设计方法、结构受力特点及经济性。

In the long-span structure,engineers tend to use steel structure,which is due to the characteristics of light weight and high strength of steel structure,but at the same time,it costs more than concrete structure.When we analyze the characteristics of long-span structure,we find that the pre-stressed reinforced concrete truss structure can not only solve the problem of long-span heavy load,but also has the advantages of good economy,convenient connection with the main structure and good integrity.Through the structural design of a specific project,this paper expounds the design method,structural stress characteristics and economy of pre-stressed reinforced concrete truss.