INSTALLATION METHOD FOR CAST-IN-PLACE PILES HAVING EXPANDED LEADING ENDS TO REDUCE THE REQUIRED DEPTH FOR PILE FOUNDATION IN SOFT GROUND

摘要

PURPOSE: An installation method for cast-in-place piles having expanded leading ends is provided to ensure bottom bearing force eve in soft ground by extending the effective section of the leading end of pile foundation.;CONSTITUTION: An installation method for cast-in-place piles having expanded leading ends is as follows. When leading end of an injection pipe(25) reaches the designated depth of a cast-in-place pile and the injection and expansion of a liquid(32) are completed, the injection pipe is pulled out. The injected liquid is solidified in the ground and a consolidated structure(33) is formed. A casing is inserted until the leading end reaches the consolidated structure, and a mesh reinforcement(23) is inserted into the casing. Concrete(31) is poured and cured inside the casing to complete a cast-in-place pile integrated in the consolidated structure.;COPYRIGHT KIPO 2011