水上挤密砂桩在珠港澳大桥岛隧工程中的应用

Sand compaction piles in the application of bead the island tunnel engineering of the Hong Kong and Macao

介绍了挤密砂桩加固软土地基的原理与所用设备,从施工准备、套管贯入、排泥、制桩、打桩结束移位五方面,阐述了其施工工艺,并探讨了施工材料选取与质量控制措施,经实践表明,该软基处理方法可有效提高地基的承载力。

The paper introduces the principle and applied equipment for the sand compaction pile to consolidate the soft-soil foundation, illus-trates its construction craft from the construction preparation, drivepipe injection, sludge disposal, and piling displacement, explores the selection of the construction materials and quality control measures, and proves by the practice that the soft foundation treatment can enhance the loading capacity of the roadbed.