Steel strand ground pipe penetrating system in large-span steel truss and pipe penetrating construction method

Abstract

The invention discloses a steel strand ground pipe penetrating system in a large-span steel truss, which is used for enabling steel strands to penetrate into a lower chord pipe. A plurality of casingpipes are arranged in the lower chord pipe. The pipe penetrating system comprises a platform arranged on the ground, a winch which is arranged on one side of the platform, and a supporting frame whichis arranged on the platform and is close to the winch, wherein a traction rope is wound on the winch, the traction rope extends into the casing pipes from one ends of the casing pipes and extends outof the casing pipes from the other ends of the casing pipes, and the end, extending out of the casing pipes, of the traction rope is connected with the steel strands; and pulleys capable of rotatingfreely are arranged on the supporting frame, the traction rope winds around the corresponding pulley and then penetrates into the corresponding casing pipe, and the traction rope is made to be far away from the inner walls of the casing pipes through the arrangement of the pulleys. The winch is switched on to drive the traction rope to pull the steel strands, the steel strands are made to correspondingly penetrate into the casing pipes, and ground pipe penetrating is achieved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a ground-pipe-pipe system for steel strands in a large-span steel truss and a construction method for piercing the pipes. Background technique [0002] At present, most of the prestressed steel strands used in space steel structures in China belong to the external tension suspension cable structure, and the space large-span internal tension prestressed steel strand tension structure is rarely used in China. The only internal threading technology is to use a single thin steel wire to manually pass through the steel strand casing after the steel strand casing is hoisted as a whole, and then manually pull the hoisting wire rope to the steel strand side, and then complete the steel strand casing. Threading work, the construction efficiency of this method is low, time-consuming, laborious, labor costs increase, and the construction period is longer. Contents of the inv...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, to provide a steel strand ground pipe threading system in a large-span steel truss and a construction method for threading pipes, so as to solve the problem of the high-altitude pipe threading difficulty of multiple steel strands, the large weight and excessive traction force. Large size, large damage to the steel strands when passing through the pipe, easy to entangle and interfere with each other when passing through the pipe, high cost of pipe passing measures, etc., achieved the purpose of ensuring construction safety and saving construction time and cost

Images