厦门杏林湾排涝泵站跨管线围堰设计方案探讨

Exploration on Design Scheme of Cross- pipeline Cofferdam for Xinglin Bay Drainage Pumping Station in Xiamen

针对厦门杏林湾泵站围堰需2次跨过三根市政管线的特点,结合工程区的地质条件、水文条件、围堰结构型式选择、现有施工水平等因素,对土、充灌砂、混凝土、浆砌块石、钢板桩等围堰型式进行分析,经多方案综合比选,提出了"桩基+盖板"的水上管线加固方案,不但可以有效控制管线变形,而且施工可操作性较强。

In view of some characteristics of the cofferdam with requirement of twice crossing the three municipal pipeline in Xingling bay drainage pumping station in Xiamen, combining the geological conditions, hydrological conditions, the cofferdam structure type selection, the existing construction level and other factors, the article analyzes cofferdam types of the soil, the filling sand and the concrete, the steel piles and so on. And after comparison among some schemes, it puts forward the water pipeline reinforcement scheme of ＂pile foundation ＋ cover plate＂, which not only can effectively control the deformation of pipeline, but also the flexible construction.