超长大直径海工混凝土桩基冬季施工技术

Winter Construction Technique of the Super Long and Large Diameter Piles of Marine Concrete

国内外超长大直径高性能海工混凝土严冬施工方面的经验、研究比较少,辽河特大桥39号主墩钻孔桩施工过程中,针对辽河潮汐影响的海水环境及东北地区特殊的冬季气候条件,将海水泥浆、海工混凝土和冬季施工桩基的方法结合在一起,最终成功实施,丰富了在不同水文及气候条件下大直径超长桩基础的施工方法。

the experiences and researches about the construction of the super long and large diameter piles of marine concrete in winter are limited both at home and abroad. During the construction process of the main pile No.39 foundation of Liaohe Ultra-large Bridge, for the seawater environment of Liaohe River by tidal effect and the special environmental and climatic conditions in winter in northeast China, the combination of seawater mud, marine concrete and winter construction of pile foundation was finally carried out successfully. It enriches the construction method of the super long and large diameter pile foundation in different hydrology and climatic conditions.