Embedded channel installation and fixation method under cast-in-place pipe gallery traditional technology

Abstract

The invention relates to an embedded channel installation and fixation method under the cast-in-place pipe gallery traditional technology. According to the embedded channel installation and fixation method, reinforcing steel bar binding is conducted first of all, and after reinforcing steel bar binding is completed, locating sleeves are welded to reinforcing steel bars, wherein the locating sleeves are perpendicular to the surface of a wall; holdfasts are connected with the embedded channel, and the holdfasts penetrate through the locating sleeves; formwork abutting rods are welded to the endsof the holdfasts; an inner formwork and an outer formwork of the wall are installed; protective layer cushion blocks are arranged on the bound wall reinforcing steel bars, split bolts penetrate through the protective layer cushion blocks, cement formwork abutting rods are installed, the interval between the inner formwork and the outer formwork is adjusted, and the channel and the formwork abutting bars are made to be in tight combination with the formworks on the two sides; the formworks are reinforced through the split bolts, the cement formwork abutting rods and primary and secondary bolts; and concrete is poured, and the embedded channel is permanently fixed. By the adoption of the embedded channel installation and fixation method under the cast-in-place pipe gallery traditional technology, the installation precision of the embedded channel is guaranteed, the construction errors are reduced, the work efficiency is improved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to a building construction method, in particular to a method for installing and fixing a pre-buried channel under the traditional technology of a cast-in-place pipe gallery. Background technique [0002] There are a large number of mechanical and electrical pipeline equipment that need to be installed and fixed during the construction of the urban comprehensive pipe gallery project. There are many problems in the traditional post-installed anchor bolt + angle steel channel steel welding bracket fixing method, which can no longer fully meet the requirements of the comprehensive pipe gallery construction. With the further promotion of pipe gallery projects across the country, more advanced pre-embedded channels + finished brackets have replaced traditional rear anchor bolts + angle steel channel steel supports, and have begun to be widely used in pipe gallery projects. [0003] Pre-buried channels are widely used in rail transit pro...

AI Technical Summary

Problems solved by technology

[0008] (1) Using the fixing method of binding the channel to the steel bar of the wall (or directly welding the channel to the steel bar of the wall), due to the large error in the manual binding of the steel bar, it is easy to cause the position of the channel to be inaccurate, especially It is impossible to ensure that the channel and the formwork are tightly combined, resulting in different depths between the channel and the wall, which cannot meet the accuracy requirements of the subsequent electromechanical installation

[0009] (2) There are also disadvantages in the fixing method of opening positioning holes on the formwork, using positioning bolts for positioning, and fixing the channel on the formwork. If the channel is temporarily fixed on the steel bar, the channel will appear when the formwork is installed. The positioning bolts cannot pass through the positioning holes on the formwork, which brings great difficulties to the formwork installation; if the channel is pre-fixed on the formwork, the channel anchors and the longitudinal direction of the pipe gallery will appear when the formwork is installed. The problem of the collision of the main reinforcement (thick longitudinal reinforcement, difficult to adjust), resulting in the situation that the formwork cannot be installed

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