城市轨道交通盾构隧道穿越大厦地下室锚索的处理方案比选

Comparative Study on Schemes of Shield Tunneling under High-riser Basement

以郑州地铁1号线区间穿越一座高层大楼的三层地下室围护结构锚索拔除为背景,介绍了盾构穿越高层地下室锚索处理方案的比选研究。通过技术、经济及工期等全方位的比选研究,确定了采用人工挖孔结合锚索拔除的锚索处理方案,并对该推荐方案的有关技术进行了详细分析。本处理方案的比选研究成果可供类似工程的设计和施工作参考。

Based on the construction project of Metro Line 1 of Zhengzhou, this paper describes some shield tunneling schemes traversing the 3 - stroied basement anchor wires of a 26-stroied high building, and the scheme using artificial excavate pile and combined with the technique of anchor wires extraction is recommended as a preliminary scheme, and judged by technical, economic factors and construction term. In this paper, the recommended scheme is described in detail and could be used as a reference for similar pro- jects in the future.