The invention relates to a method for
processing a long-
pile short-
pier composite foundation, which sets
pier-changing and inter-
pier pitching piles in the foundation to satisfy the foundation
bearing capacity and deformation requirements, performs pier setting mainly through a forced ramming or forced ramming
displacement method, and sets
sedimentation control piles between the piers. The principle of displacing pier distribution points comprises the following steps: symmetrically setting one or more displacement points for changing the piers in the length direction of an independent foundation, and setting the
sedimentation control piles between the displacement points as the inter-pier pitching piles; evenly setting a plurality of displacement points for changing the piers in the length direction of a strip foundation, and arranging the
sedimentation control piles between the displacement points according to the designed separation distance; and on the basis of a
large size, calculating the required
displacement ratio of rectangular or quincuncial distribution points for the displacing pier distribution points according to the
bearing capacity, calculating the required
pile number for the sedimentation control piles according to sedimentation, and arranging the piles according to rectangular or quincuncial shapes between the displacing piles. The method has the advantages of manufacturing cost saving, mature construction experience, simple process and remarkable effect, and economically and effectively solves the problems that the
bearing capacity of deep made ground or a soft soil foundation is insufficient and the foundation deformation is large and uneven.