桩底后压浆技术在城市地铁车站洞桩法施工中的应用

以北京地铁光华路站洞桩法灌注桩后压浆技术的成功应用为例,详细介绍了其施工方法及施工工艺。研究表明,该项技术不仅可有效地提高桩基综合承载力,且可减少工期、降低工程成本,具有良好的社会效益和经济效益。

Application of bored pile post-grouting technique in a subway station

Based on the successful application of bored pile post-grouting technique in Beijing subway Guanghualu station,which was built by pile-beam-arch construction technology,detailed construction method and technique are discussed in this article with useful conclusions obtained.It is shown that the pile post-grouting technique can largely improve overall bearing capacity of piles and that this technology can not only shorten the time limit of the project but also reduce its cost.