
9月27日凌晨4点,湖南省平益高速白泥湖湘江特大桥左幅顺利合龙,这是继南阳湘江特大桥合龙之后平益高速项目又一关键控制性工程合龙。
白泥湖湘江特大桥位于岳阳市湘阴县,跨越湘江主航道,全长2369米。主桥长940米,有5个深水低桩承台,采用钢套箱围堰进行施工,最大抽水深度达30米,为湖南省内最大抽水深度基础施工,安全风险极高。大桥施工建设者们克服地质复杂、疫情和汛期等不利影响,创造性提出“深水大体积围堰”施工方案,在一个枯水期内完成桥墩出水,为上构施工赢得了宝贵时间。
据悉,平益高速是湖南省在建投资最大、里程最长、建设难度较大的高速公路项目,起于平江县石牛寨镇(对接江西修平高速),止于益阳市赫山区笔架山(对接长常北线高速长益段),主线全长176.66公里,概算总投资243.24亿元,计划在2022年底建成通车。该项目是湘赣边红色旅游交通网的重要支撑,也是推动长江经济带发展的重大高速公路项目和洞庭湖区环线高速公路的重要组成部分,对助推湘赣边“交通+红色文化旅游”融合发展示范区具有重要意义。
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