For multiple?story buildings, when bearing capacit y of ground meets de sign demands, while supporting course is too weak to meet demand of settlement d eformation, if we install rigidity short piles composite ground, combined with t ick course technology, we can not only improve bearing capacity of ground but al so control settlement deformation of buildings.

This paper put forward the applicable calculation method with the emphasis on theories of the rigid length-short-pile composite foundation strength and settlement.

Engineering characteristics of composite foundation with rigid-flexible and long-short piles;

Field tests on soil arching of highway embankments reinforced with rigid piles and their comparison with current analytical methods;

Experimental analysis of vertical soil arching effect of embankment reinforced by rigid piles;

Experimental study on behavior of rigid pile composite ground under horizontal load;

Study on deflection of rigid piles under lateral loads;

Experimental study on instability of rigid piles under lateral loads in silty clay;

Study on mechanics behavior of composite ground improved by rigid piles under flexible foundation