Construction method of comprehensive formwork for deformation joint water stop belt dowel bar of underground comprehensive pipe gallery

Abstract

The invention discloses a comprehensive formwork construction method for an underground comprehensive pipe gallery deformation joint water-stop belt dowel bar. The method includes the steps that a plastic formwork is assembled according to the structural size of a section; and inner corners of a corner formwork are made into arc corners along with a steel-edged rubber water-stop belt; according to the structural size of the section, a steel formwork has four types, namely the corner formwork, a straight section with holes, a splay corner and a straight section without holes, wherein the inner corners of the corner formwork are arc corners; reserved holes are formed in the steel formwork at intervals according to the position of the dowel bar, and the diameter of the reserved holes is one time that of the dowel bar; the plastic formwork is fixed to the side without the dowel bar through a split bolt; the steel formwork is fixed to the side with the dowel bar through a water-stop split bolt, a release agent is smeared evenly before the steel formwork is installed, and steel formwork blocks are connected through bolts; and after a formwork system is fixed, the seams of the plastic formwork, the steel formwork and the rubber water-stop belt are sealed through adhesive tape. By means of the comprehensive formwork construction method for the underground comprehensive pipe gallery deformation joint water-stop belt dowel bar, work efficiency can be improved, the construction period is shortened, the construction cost is reduced, and damage, caused by subsequent formwork mounting and demounting, to concrete is effectively avoided.

Description

technical field [0001] The invention relates to a formwork construction method for a deformation joint of a pipe gallery, in particular to a comprehensive formwork construction method for the deformation joint of an underground comprehensive pipe gallery at the dowel part of a waterstop. Background technique [0002] The deformation joints (equipped with dowel bars) of the underground comprehensive pipe gallery are the key parts of the waterproof of the underground comprehensive pipe gallery, and the steel-edged rubber waterstops and dowel bars are densely covered here, making the formwork construction here a difficult point. At present, the formwork of the deformation joint of the pipe gallery mostly adopts a single wooden formwork or plastic formwork, and the following problems exist in the construction process of the formwork on the side equipped with dowel bars: [0003] ① In order to ensure that the pipe gallery can settle evenly, it is designed to set dowel rods at the...

AI Technical Summary

Problems solved by technology

When the template is made, it is necessary to drill holes on the template, which is difficult to make

[0004] ②Wooden formwork or plastic formwork has low rigidity, and dowel bars pass through the formwork, so the reinforcement is more complicated

[0005] ③When removing the formwork, the formwork needs to be removed from the dowel bars. Since a formwork has several dowel bars passing through, once there is a deviation in the installation of the dowel bars, the formwork will not be able to be removed. Therefore, in order to be able to remove the formwork , only destroys the template

This has resulted in the situation that the formwork cannot be turned over, increasing the construction cost

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