Aiming at special method of installation of rammed soil-cement piles

laying special strain sensor and then the pile shaft can be measured. Based on test data of pile shaft compressions

the computation method of shaft compression is studied; and the distribution of pile shaft compression

and its influence on shaft resistance are analyzed. The shaft compression and its influence on bearing properties in different lengths and different cement contents of rammed soil-cement pile are discussed. Research results show that (1) the pile shaft compression is mainly distributed in upper range of pile length about 8 pile diameters; and the varying gradient is larger; and pile shaft compression the displacement of pile tip; (2) the axial load transfer

distribution of shaft resistance occurred mainly within this range; (3) the shaft friction distribution is uneven; and it plays more fully in upper part of pile and less in lower part of pile; (4) under cement mixing ratio within the common project and the length-diameter ratio＞12

the change of length-diameter ratio and cement mixing ratio is not significant effect on load-bearing characteristics of pile.