聂建国  高璀旭  周天然
    （清华大学土木系  北京 100084）

[提要]  对预应力钢-混凝土组合梁的应用发展作了简要的介绍。依据现有的研究成果，尤其是对预应力简支
组合梁的试验研究成果进行了介绍和评价。同时通过对算例的计算分析，比较了普通组合梁和预应力组合梁的受力性能，以及计算方法之间的差异，这对预应力组合梁的设计有一定的参考价值。
[关键词]  预应力  组合梁  预应力增量  承载力  计算方法

The development of prestressed steel-concrete composite beam is presented concisely. Because the appropriate design method of prestressed composite beam is not available, the existing research achievements, especially of the simple supported prestressed composite beam are presented and evaluated. An example is shown to analyze and compare the common composite beam and prestressed composite beam, and the difference between the methods of calculation is presented, which may be helpful to the design of prestressed composite beam.
Keywords: prestress; composite beam; prestressing increment;  flexural capacity;  predicting method