上海中心大厦钻孔灌注桩施工技术

结合位于陆家嘴金融贸易核心区、将成为上海和全国新标志的"中国第一高楼"上海中心大厦超大超深钻孔灌注桩工程,剖析了其垂直度要求高、成孔难度大、桩端注浆控制难等施工技术特点和难点。针对该工程钻孔灌注桩的钻机就位和开孔、泥浆性能、钻进成孔、第一次清孔、钢筋笼制作、钢筋笼的安装与沉放、水下混凝土浇筑、压密注浆等主要工序阐述了其施工技术控制要点。

CONSTRUCTION TECHNOLOGY OF BORED PILE IN SHANGHAI TOWER

The paper, with the core area is located in Lujiazui Financial and Trade, will become the new symbol of Shanghai and China, ＂China＇s first high-rise＂ the Shanghai Tower large bored piles in engineering practice, analysis of the vertical degree demanding, difficult hole, grouting pile construction technique for such control is difficult and difficult, then bored for the drilling of the project in place and the hole, mud properties, hole drilling, first hole cleaning, production of steel cage, steel cage installation and sinking underwater concrete filling, compaction grouting and other major technology processes described its construction control points.