Soft foundation treatment process for low filling road section pipe pile composite foundation

• Main Authors: YANG HONGZHU, HE CHANGMING, QIAN CHAOQING, PENG GONGXUN, XIAO LITUO, XIONG YONG, MA LIZHU
• Format: Patent
• Language: Chinese; English
• Published: 08.02.2022
• Subjects: CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a soft foundation treatment process for a low filling road section pipe pile composite foundation. The soft foundation treatment process comprises the following steps that a positioning ring is pressed into the foundation; the pipe pile is correspondingly pressed into the positioning ring and penetrates into the bearing stratum of the foundation, and a cavity is formed above the pipe pile; soil in the annular cavity is cleaned into an inner cavity of the pipe pile, and the annular cavity communicates with the cavity to form a cylindrical cavity; a limiting stopper is installed on the top of the pipe pile, and the limiting stopper is connected with or abuts against the pipe pile and the positioning ring; the cylindrical cavity is filled with a light flexible filler and a discrete filler in sequence; and a geocell layer is arranged on the original ground. The cylindrical cavity can be formed by pressing the positioning ring and the pipe pile in sequence, the filling assembly can be place