大型排水箱涵变形缝修复技术浅谈

Elementary Discussion on Deformation Joint Recovery Technology of Large Drainage Culvert

大型排水箱涵在运行过程中,由于箱涵顶部不均匀覆土或超载、箱涵局部损坏渗漏造成地基水土流失及止水带本身的腐蚀、老化等,引起箱涵变形缝拉开、错位、止水带渗漏等损坏,需要对箱涵变形缝进行修复。现以上海排水箱涵变形缝修复的实例,对变形缝修复技术作梳理,为类似工程提供参考与借鉴。

In the operation process of large drainage culvert, the water and soil loss of the subgrade caused by the uneven earthing or overloading, and local damage and leakage of culvert as well as its corrosion and aging of water stop will cause the cracking and malposition of culvert deformation joint, and the leakage of waterstop, which are required to recover the deformation joint of culvert. The article introduces the recovery technologies of deformation joint by a recovery case of drainage culvert deformation joint in Shanghai, which can be referred for the similar projects.