桩膜-土组合围堰施工工法

Construction method of pile-film-soil composite cofferdam

通州区凉水河治理(一期)工程,马驹桥闸和交通桥等重要结构物施工过程中,由于凉水河河道断面较宽,水流流速大,且桥闸一期围堰导流施工时过流断面窄,因此采用桩膜-土组合围堰作为桥闸施工挡水结构物,有效解决了围堰稳定性差、防渗能力不足、占用作业面宽等问题,经济效益和社会效益显著,可供同类工程借鉴。

Since Liangshui River has wider cross section, the flow rate is high, and the over current cross section is narrow during construction of bridge sluice stage I cofferdam diversion construction during important structure construction of Tongzhou Liangshui River control (stage I) project, Maju bridge sluice, traffic bridge, etc., pile-film-soil composite cofferdam is adopted as bridge dam construction water retaining structure. It effectively solves the problems of poor cofferdam stability, insufficient seepage control ability, wide occupation on the operation surface, etc., the economic benefits and social benefits are remarkable, which can provide reference value for similar projects.