Abstract: Qijian Bridge，which locates in the line from Yanjia County to Kai County，is now a bridge not suitable to a special and emergent tran sport mission．This paper introduces the calculation process an d co nstruction techniques of a compo und reinforcement method of bridge strengthening 。i.e．bonding steel plate together with casting FRC．Successful pass of the heavy motorcade indicates the applicability and usefulness of this method in the reinforcement of old bridge.

Key words: bonding steel plate, FRC, reinforcement

摘要： 以宴家．开县沿线的桥梁(七间桥)加固为例，介绍了粘贴钢板和浇筑三钢砼(简称FRc)这种复合式加固方法 在旧桥加固上的应用，详细介绍了复合式加固计算的过程和施工工艺，并通过实践证明了这种方法在旧桥加固中 的适用性和有效性．

关键词: 粘贴钢板, 三钢砼, 加固