Testing apparatus for pile end settlement of rock-socketed driven PHC tube pile and installation method

A testing apparatus for a pile end settlement of a rock-socketed driven PHC tube pile, comprising a PHC tube pile, two measuring tubes partially located in the PHC tube pile and extending out of a pile top of the PHC tube pile, a cross pile tip located at a pile end of the PHC tube pile, a pile tip steel plate connecting the PHC tube pile with the cross pile tip, a fixer fixed in the PHC tube pile, a perforated steel plate located at the pile top of the PHC tube pile and a jack to press on the perforated steel plate, wherein the two measuring tubes are symmetrically arranged, the fixer is provided with two first measuring tube outlet holes, and the two measuring tubes respectively pass through the first measuring tube outlet holes of the fixer;

• and the perforated steel plate is also provided with two second measuring tube outlet holes, and the two measuring tubes respectively pass through the second measuring tube outlet holes of the perforated steel plate.