摘要
详细介绍了部分预应力在芜湖长江大桥铁路40m跨度的混凝土简支箱梁的应用，并推导了有实用价值的公式。同时对部分预应力简支梁与全预应力简支梁作了经济比较和分析。这是我国首次将部分预应力技术应用于箱形铁路大桥，这样使部分预应力的应用范围更加广泛，同时又具有重要的经济意义。
The application of partial prestress in concrete simple-supported girders of 40 m in Wuhu Yangtze Railway Bridge is introduced in the following paper in details, from which applicable formulas are derived. Economical comparison and analysis are also conducted between partial prestressed and full prestressed simple-supported girders. This is the first application of partial prestress in major box-girder railway bridges, which enhances the application of partial prestress and presents important economical significance.
