铁路软土地基碎石桩加固技术

Gravel pile reinforcing technology for railway soft soil foundation

以中国中铁承建的埃塞俄比亚的斯亚贝巴至吉普提铁路项目SEBETA-ADAMA-MIESO段D1K28+414.78~D1K28+720段软土路基为例,通过方案设计、现场施工、施工监测及质量检测四方面的综合介绍,简述了碎石桩加固处理技术在铁路软土地基中的应用。指出碎石桩加固软土地基不仅使土的密实度增加、承载力提高、压缩性减少和消除液化,也可以调整桩与土之间的应力分配,减少桩间土的应力,提高桩间土后期强度,减少地基变形量。

This paper takes the soft soil subgrade of section D1 K28 ＋ 414.78 -D1K28 ＋ 720 of SEBETA-ADAMA-MIESO section of the project of Addis Ababa from Ethiopia to Giti Railway in Ethiopia as an example to pass the scheme design, on-site construction, construction monitoring and comprehensive introduction to the four aspects of quality inspection, briefly describes the application technology of the gravel pile reinforcement treatment technology in the railway soft ground. Gravel piles are used to reinforce soft soil foundations in order to increase soil compactness, increase bearing capacity, reduce compressibility, and eliminate liquefaction. And can also adjust the stress distribution between the pile and the soil. Reduce the stress of the soil between piles, increase the soil strength between piles, and reduce the amount of ground deformation.