原丰亭   李树昌         （济南市建筑设计研究院 250001）

[提要]  介绍了山东省体育运动技术学院3层跨度为39.7m单跨部分预应力混凝土框架梁的设计计算情况。工程采用预应力度法（PPR= 0.6）进行计算，概念明确，设计方便，为今后超大跨度预应力混凝土结构的设计积累了宝贵的经验。
[关键词]  大跨度  预应力  框架  预应力度

This article gives an introduction to the design of single span partially prestressed frame beam with 39.7m length in the training hall of Shandong Sports Technology Institute. The calculation in the design of this engineering is done by the method of degree of prestress,  so the design is clear and easy to calculate. Valuable experience is presented for design of the prestressed super-large span prestressed concrete frame.
Keywords:  large span; prestressed; frame; degree of prestress