Construction method for pile entering hole of ultra-long reinforcement cage of long auger drilling and pressing grouting pile

• Main Authors: WANG YING, DONG BAILIN, ZHAO QIYANG, LIU YASHI, WANG ZUOXUAN, ZHAO DACHUANG, DU ZHUO, AI RUOXIN, ZHANG JUNMEI, WANG XIAOHAN, LUO YONGSHENG, WANG XU, WANG RUI, JIA HENG, WANG YAKUN, GE WEI, ZHANG ANJING
• Format: Patent
• Language: Chinese; English
• Published: 06.12.2022
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention discloses a construction method for enabling an ultra-long reinforcement cage to enter a pile hole of a long spiral drilling and pressing grouting pile. The construction method aims at solving the problem that an existing construction mode cannot meet the requirements for perpendicularity and accurate positioning of the reinforcement cage when the ultra-long and ultra-heavy reinforcement cage is hoisted and installed. The method comprises the following steps that (1) a guide-in rod is arranged in a reinforcement cage in a penetrating mode; (2) connecting a combined lifting belt, wherein a main hook of the crawler crane is connected with a vibratory hammer; (3) arranging a roll shaft type anti-overflow hopper; (4) hoisting: after the reinforcement cage is away from the ground by a certain height, stopping the action of the auxiliary hook, and slowly hoisting the main hook until the reinforcement cage is vertically hoisted; (5) correcting the perpendicularity by adopting a theodolite; (6) slowly d