A construction method of prefabricated concrete column embedding end high pressure grouting construction structure

Abstract

A construction method for a precast concrete column embedded end high-pressure grouting construction structure, which relates to the field of building construction. The precast concrete column embedded end high-pressure grouting construction structure includes a prefabricated column, which penetrates a variable-diameter steel pipe embedded in the prefabricated column, and penetrates the The upper prestressed tendon pierced in the variable diameter steel pipe, and the grouting material poured in the variable diameter steel pipe; the pouring height H of the grouting material is 1 / 3 of the height of the variable diameter steel pipe; the lower part of the variable diameter steel pipe is connected with a grouting pipe , the upper part communicates with a slurry outlet pipe. The variable-diameter steel pipes include welded upper small-diameter steel pipes and lower large-diameter steel pipes; the height of the lower large-diameter steel pipes is 1 / 3 of the total height of the variable-diameter steel pipes. The invention solves the problem that the prefabricated prestressed concrete column has sufficient self-resetting ability, and ensures that the column foot does not crack prematurely.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a prefabricated concrete column embedding end high-pressure grouting construction structure and a construction method. Background technique [0002] In the traditional method, all grouting or no grouting is generally used in the channel of prefabricated columns. The prestressed steel bars in all the grouting channels are fully bonded to the concrete. When large cracks appear, local steel bars are prone to yield and thus lose their self-resetting ability; the grouting of all grouting The method is to directly grout the top of the steel pipe; no grouting in the tunnel can ensure that the structure has a good self-resetting ability, but it is easy to crack prematurely at the foot of the column, resulting in excessive lateral displacement of the structure. Contents of the invention [0003] The purpose of the present invention is to provide a partially bonded prefabricated conc...

AI Technical Summary

Problems solved by technology

[0002] In the traditional method, all grouting or no grouting is generally used in the channel of prefabricated columns. The prestressed steel bars in all the grouting channels are fully bonded to the concrete. When large cracks appear, local steel bars are prone to yield and thus lose their self-resetting ability; the grouting of all grouting The method is to directly grout the top of the steel pipe; without grouting in the tunnel, it can ensure that the structure has a good self-resetting ability, but it is easy to open the cracks at the foot of the column prematurely, resulting in excessive lateral displacement of the structure

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