Abstract: A combination of two reinforcing method in reinforcing Renmin Bridge of Bishan County is introduced．Both new technology and traditional method are used on it and the bridges carrying capacity are obviously advanced．Its economy benefit is also very good．It proves that the combination of several reinforcing method in bridge reinforcing has a good practical appllcation prosperity．

Key words: stone arch bridge, bearing capacity, strenghening design

摘要： 重庆璧山县人民大桥加固过程中的两种加固方法的组合使用，既有新方法新技术的应用，又有传统加固方法 的体现，能大幅度提高原桥承载能力，将原桥的荷载提高2个等级，技术及经济效益也相当好，说明在桥梁加固设计 中几种加固方法的联合使用具有较好的实际应用前景.

关键词: 石拱桥, 承载力, 加固