Tower assembling / demolition construction method and equipment with a stand bar

摘要

PROBLEM TO BE SOLVED: To eliminate the need to secure a large site for fixing the base end of a branch line onto a ground, to surely support a stand bar by three branch lines, and to enable the tension management of the branch lines to be performed on the ground, in a stand bar method.SOLUTION: In a stand bar method, a base end part of a stand bar is supported by a steel tower T during assembling or demolition, a tip of a derricking wire branch line 2a is supported at a tip of the stand bar 1 and the other end thereof is supported at a steel tower point, ends of two bracing branch lines 2b are fixed to the tip of the stand bar 1, and the other ends thereof are extended to right and left sides of the stand bar 1 respectively. An intermediate branch line support rod 4 is almost horizontally fixed at a steel tower T point below the support point of the base end part of the stand bar 1, both ends of the intermediate branch line support rod 4 are made to project to the outsides of nearly left and right side positions of the stand bar 1, the other ends of the bracing branch lines 2b are slidably locked once to the tip of the intermediate branch line support rod 4 and further are respectively fixed to foundation parts 5 of the steel tower T, and steel tower members are lifted by a suspension wire 3 provided on the stand bar 1.