地下连续墙接头处理技术研究及应用

Research and application of joint treating technology of diaphragm wall

随着框格式地下连续墙在水工建筑物中的应用,其框格节点的接头处理成为一个技术难点。在分析"模袋法"及"投袋法"优劣点的基础上,介绍了在框格节点钢制接头处理中一种可有效防止混凝土绕流的施工技术,即参照"拔管法"而发明的"拔板法"。实践表明,该技术操作简单,适用范围广,并可有效降低施工成本,可为类似工程施工提供参考。

The grid diaphragm wall is widely used in the construction of hydraulic structures, and the treatment of grid node joints is a technical difficulty. On the basis of analyzing the pros and cons of mould bag method and bag filling method, a con-struction technology for preventing concrete flowing-around is introduced in the treatment of steel grid joints, namely＆quot;extracting-slab＆quot; that comes from ＆quot;extracting-tube＆quot;. The practice shows that this technology is characterized as simple operation, wide application range and can effectively reduce the construction cost.