8.3m深基础采用一道现浇钢筋混凝土水平支撑作支护——上海广播电视国际新闻中心基础工程施工实践

Construction Practice of Bracing Structure by One Layer of Horizontal Cast-in-Situ Reinforced Concrete in 8.3m Deep Foundation

上海广播电视国际新闻中心工程基础深达8.3m,且基坑平面复杂,施工场地狭小。该工程在施工中结合现场实际,采用钻孔灌注桩加一道水平全现浇钢筋混凝土支撑作基坑围护系统,并通过分层开挖和支撑置换等措施,不仅受力性能好、变形小,而且制作方便,节约材料,达到了预期的目的。

According to the site situation of the International News Center under Shanghai TV-Broadcasting Station,that is to say,8.3m in depth,complicated pit ground and narrow construction site,bored-and-poured piles with the addition of one layer brace of cast-in-situ reinforced concrete for bracing structure are adopted.Layer-by-layer excavation and proper brace replace- ment leads to an expected result,not only a good bearing capacity and small deformation,but also convemient construction and material saving.