GROUTING METHOD FOR IMPROVING BEARING FORCE OF SOIL OF BORED PILE AND REINFORCEMENT NET ASSEMBLING STRUCTURE FOR BORED PILE, TO IMPROVE BEARING FORCE OF SOIL AND FRICTION FORCE OF BORED PILE

摘要

PURPOSE: A grouting method for improving bearing force of soil of a bored pile and a reinforcement net assembling structure for the bored pile are provided to settle a primary factor of lowering of the friction force of the peripheral surface part of the bored pile and the bearing force of the front end and to increase the friction force and bearing force. CONSTITUTION: A reinforcement net assembling structure for a bored pile comprises a packer injection pipe(7) becoming a passage for injecting an injection liquid into a reinforcement net structure comprising a main reinforcement, a band reinforcement, and a peripheral surface spacer; circular manchette tubes(8) for peripheral surface injection connected to the packer injection pipe and installed to the periphery of the reinforcement net structure according to the position of the depth requiring ground reinforcement to increase the friction force of the peripheral surface part of the bored pile; a circular manchette tube(9) for front end injection connected to the packer injection pipe and installed to the lower side of the front end of the reinforcement net structure to reinforce the bearing force of the front end part of the bored pile; and a T-shaped connection unit connecting the packer injection pipe, the circular manchette tubes for peripheral surface injection, and the circular manchette tube for front end injection.