A steel grouting sleeve for ductile connection of prefabricated concrete structures

Abstract

The invention discloses a steel bar grouting sleeve for ductile connection of fabricated concrete structures, comprising two sections of the sleeve, a grouting hole and a grouting hole. The first section of the grouting sleeve is used as a connector for steel bars and is used to connect different components The second section of the through sleeve is the through tube of the steel bar, which is used for the steel bar to pass through the post-cast layer, and the two sections of the sleeve are connected by threads. The grouting hole is located at the lower part of the first section of the grouting sleeve, and the grouting hole It is arranged on the upper part of the second through-sleeve. The biggest feature of the steel bar grouting sleeve provided by the present invention is that the grouting sleeve is a combined type, and the overhanging steel bar of one prefabricated component passes through the post-cast layer through the second section through the sleeve, and is inserted into the first section of another prefabricated component. The grouting sleeve is then grouted to connect the steel bars between different prefabricated components to ensure that the longitudinal steel bars can effectively transmit force, so that the position of the grouting sleeve can also make the connection part have the required plastic deformation capacity when it enters the plastic state. In addition, using the steel bar grouting sleeve provided by the invention also has the functions of fast, efficient, simple and convenient for construction operations, thereby ensuring construction quality, improving construction efficiency and reducing construction difficulty.

Description

technical field [0001] The invention relates to the technical field of connection construction of prefabricated concrete components of prefabricated concrete structures, in particular to a steel bar grouting sleeve used for ductile connection of prefabricated concrete structures in a prefabricated building structure. Background technique [0002] Prefabricated reinforced concrete structures have already had many practical applications and relatively mature technical research in developed countries such as Europe, America and Japan. In recent years, the country has developed green buildings, vigorously developed prefabricated buildings, and promoted the transformation and upgrading of the construction industry. With the acceleration of the process of "construction industrialization and housing industrialization" in my country, the application of prefabricated structural buildings is becoming more and more extensive, and the practical application and theoretical research of pr...

AI Technical Summary

Problems solved by technology

When the connection part enters the plastic state, in order to make it have the required plastic deformation capacity, it is necessary to make the connection part form a plastic hinge, and according to the current connection form of the prefabricated building, the grouting sleeve is used at the bottom of the column and the bottom of the shear wall It is difficult to form a plastic hinge at the connection part when the steel bars of the upper and lower layers are connected

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