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監理公司承監的濟南繞城高速公路二環線西環段項目五分部黃河特大橋45#水中墩樁基順利開鉆
來源：監理公司   作者：王雅梅   發布時間：2020-11-19 17:15:25


        11月17日9時，由山東省濱州市公路工程監理咨詢有限公司承監的濟南繞城高速公路二環線西環段項目五分部黃河特大橋水中墩45-17樁基順利開鉆，標志著黃河特大橋主橋基礎施工全面拉開序幕。


45#墩位于黃河河道中心，是黃河特大橋乃至濟南繞城高速公路二環線西環段項目的控制性節點工程，也是重點與難點之一。黃河特大橋主橋是四塔鋼混組合梁部分斜拉橋，共有4個橋墩，45#墩是唯一的水中墩，此橋墩共有20棵樁基，樁徑2m，設計樁長95m，采用武橋重工KTY4000反循環鉆機施工。

為確保45#水中墩順利開鉆，監理組嚴格控制施工過程中的每道工序，依據科學嚴謹的施工方案，采用“先樁后圍堰”的總體施工工藝，搭設了施工平臺和鋼護筒，護筒長24m，將水上作業變成“陸地作業”，為45#水中墩順利開鉆創造了條件。

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