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.

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.

Application of refuse soil pile for soft subgrade treatment in a project is introduced,and its effect are illustrated by test.

Subdam was built on ash slag foundation,geotechnical engineering investigation ought to make good use of timeless observe datas of earlydays dam,research the characteristic of ash slag,that ought to conduct judge on liquefaction of saturated ash slag in Ⅶ degree and above Ⅶ degree of earthquake country.

The function analysis of lime soil pile in composite foundation;

The construction and quality control of lime soil pile treating collapsible loess foundation

Acording to comparison between loess subgrade and the worked subgrade by lime soil pile,this paper analyses function of lime soil pile which can raise foundation bearing capacity and reduce deformation,discuss for further behaviors of lime soil pile composite foundation by finite element.

Round-tapered lime-soil column and design calculation of its composite foundation;