By introducing a new foundation treatment technology named expanded and compacted ash residue soil column composite foundation by using heavy hammer,controlling construction process and analyzing detection result,heavy miscellaneous fill layer s collapsibility can be eliminated and its bearing capacity of composite foundation soil can reached to 200kPa.

The principles and construction of lime soil compaction pile strengthening collapsible loess foundation;

The application of lime soil compaction pile in virtual filling treatment;

It illustrates looping design principle for humid loess,which is based on looping reinforcement of humid loess,combined with specific engineering it introduces design and construction method of lime soil compaction pile, it can be referred for similar engineering.

Application of the collapsible loess foundation treatment with the lime-soil compaction pile;

Engineering application of composite foundation of lime-soil compaction pile and CFG pile;

Swelling soil foundation treatment with lime-soil compaction pile;

Application of lime-soil compacted pile for humid loess foundation treatment;

Stress analysis of lime-soil compacted pile based on the unified strength theory;

The field loading test of single pile and three piles composite ground are studied combining the construction of lime-soil compacted pile in collapsible loess foundation.

As composite foundation with multi?element pile,the under?rammed bored pile,which composites the cast?in?place pile in upper part and the rammed bulb pile in under part,is used in an engineering by combining with the rammed and compacted lime?waste?soil pile.