Reverse construction method waterproof grouting hole device and construction method

Abstract

The invention provides a reverse construction method waterproof grouting hole device and a construction method, and belongs to the technical field of building construction for solving the problems that an existing grouting pipe waterproof structure is prone to aging and brittle cracking, and internal water blocking construction is difficult. The reverse construction method waterproof grouting holedevice comprises grouting pipes matched with grouting holes, grooves are formed in the outer sides of the grouting pipes, and the grooves are formed in a spiral shape; and grouting pipe cover platesare arranged on the upper parts of the grouting pipes in a matched mode, and elevation control lines are arranged on the outer walls of the grouting pipes. The construction method comprises the stepsthat firstly, concrete is poured to a roof and a firstly-built vertical component hung under the roof; the multiple grouting pipes are pre-embedded in the area, around a later-built vertical component, of the roof; then the later-built vertical component is downwards poured through channels of the grouting pipes; then the grouting pipes are removed, and holes of the grouting pipes are plugged; andfinally, the grouting pipe cover plate is constructed. A water stopping path is additionally arranged on the outer wall of the concrete through the spiral grooves so as to realize the water stoppingpurpose, and the grouting pipes can be recycled to avoid construction inconvenience caused by later metal corrosion or chiseling.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a waterproof grouting hole device and a construction method of the reverse method. Background technique [0002] At present, in the top-down method of foundation pit construction, first, when the roof is being constructed, grouting pipes are reserved in the roof area around the vertical members of the lower post-build; secondly, when pouring the concrete structure below, the concrete is injected into the grouting pipes through flexible pump pipes, and a dustpan is installed under the grouting pipes The mouth, and then the concrete is introduced into the vertical component of the rear building through the dustpan mouth to complete the pouring. [0003] For reserved grouting pipes, prefabricated thin-walled steel pipes or plastic pipes are generally used. This type of pre-embedded casing has the following disadvantages: [0004] First, plastic pipes cannot be equippe...

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Problems solved by technology

[0008] The main purpose of the present invention is to provide a reverse method waterproof grouting hole device and its construction method, mainly by using a spiral groove on the outside of the grouting pre-embedded pipe, and adding a water passage on the outer wall of the concrete through the spiral groove to achieve water stop purpose, and after the concrete pouring is completed, it can be rotated and unscrewed to achieve the purpose of recycling, avoiding the inconvenience of construction caused by metal corrosion or chiseling in the later stage, and reducing waste at the same time, thus solving the problem of the reverse method. water leakage problems

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