Design method for grouting channel of prefabricated concrete vertical members

Abstract

The invention discloses a design method for a grouting channel of prefabricated concrete vertical members. The design method comprises the following steps that the upper-section prefabricated concretevertical member and the lower-section prefabricated concrete vertical member are prefabricated; a first bottom key groove, a second bottom key groove, an L-shaped grouting pipeline and an L-shaped observation pipeline are prefabricated in the upper-section prefabricated concrete vertical member; the first bottom key groove is connected with the L-shaped grouting pipeline, and the second bottom key groove is connected with the L-shaped observation pipeline; steel bar grouting sleeves are arranged on the lower portion of the upper-section prefabricated concrete vertical member and communicate with a horizontal joint of the upper and lower prefabricated members; and a grouting material sequentially enters the second bottom key groove, the horizontal joint of the upper and lower prefabricatedmembers and the first bottom key groove from the L-shaped grouting pipeline, is discharged form slurry outlets of the steel bar grouting sleeves firstly to block the slurry outlets of the steel bar grouting sleeves, and then is discharged from the L-shaped observation pipeline to block the L-shaped observation pipeline and the L-shaped grouting pipeline.

Description

technical field [0001] The invention relates to a grouting technology used when vertical components of a prefabricated and assembled building are connected up and down, in particular to a method for designing a grouting channel of a prefabricated concrete vertical component, and belongs to the technical field of construction engineering. Background technique [0002] At present, precast concrete vertical components are widely used in various types of public and civil buildings, and precast concrete vertical components between different floors are mostly connected by steel sleeve grouting. The principle of steel grouting sleeve connection is mainly to fill the gap between the reserved steel bars of the lower prefabricated component and the reserved sleeve inner cavity of the upper prefabricated component with high-strength grouting material, so that the connection strength between the steel bar and the sleeve can meet the design requirements. . The density of the grouting ma...

AI Technical Summary

Problems solved by technology

However, when this type of pressure grouting method seals the lower grouting opening, due to the influence of gravity, the unsolidified grouting material in the grouting sleeve will leak out, resulting in the grouting material in the grouting sleeve being not dense and filling, which in turn affects the grouting of the grouting sleeve. The strength of the connection joint of the barrel connector

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