Abstract: It is convenient to use shotcrete in repairing or reinforcing bridges which have been destroyed or have been long out of repair.It has the greatest advantages in speed-repairing, reducing the construction cost, wood plankings, not bringing about traffic jam, and so on.This paper tries to carry on a preliminary study of shotcrete for repairing or reinforcing bridges in operation. The conceptions are presented for reference only.

Key words: shotcrete, reinforce, principle, arch bridge

摘要： 喷锚支护是六十年代以来迅速发展起来的一种新型地下工程支护结构,并已成功地运用于矿山、铁路、水利、电力,以及国际地下工程中。近年来国内外一些工程部门将这种工艺用于旧、危拱桥加固补强取得了初步成功。实践证明,采用该工艺加固旧、危拱桥简易可行,它具有快速、经济、节省材料,不影响车辆通行等特点,经济效益显著。本文拟对喷锚加固拱桥的方法及其机理进行初步探讨,以供参考。

关键词: 喷射混凝土, 加固, 机理, 拱桥