Lime-soil Compaction Pile Combined With Down Hole Dynamic Compaction Applied In Collapsible Loess Foundation

The scope of loess in our country is very extensive, especially in western area. With the development of country's modernize, and the development of western regions, more and more construction engineering will build on the loess foundation. The result of the applied loess also have got the higher request. At this time ,summarize the method of proceeding collapsible loess and improving it have got the important fulfillment meaning. In the process of research the collapsible loess, it get many differently methods. It introduce two kinds of methods: the lime-soil compaction pile and down hole dynamic compaction pile in details, including the concept principle of the compound foundation, the important point of design, construction craft, and examine item etc. At the same time, combine with the example of construction, Introduce the combine two methods applied in collapsible loess foundation, and analysis the result, pointing out this methods is feasibility and applicability. It provide some experience to other similar engineering. This paper modeling it with software MARC, and analyze the result of it.