Mixed type grouting sleeve and prefabricated shear wall thereof

Abstract

The invention discloses a mixed type grouting sleeve and a prefabricated shear wall thereof. The mixed type grouting sleeve comprises a sleeve cylinder with a cavity, and a grouting opening and a grout discharging opening are formed in the sleeve cylinder. A connecting steel bar passes through the closed end of the sleeve cylinder and is restrained in the sleeve cylinder by an expansion restrainttube and an expansion head at the tail end of a first steel bar, and a connected steel bar is inserted into the open end of the sleeve cylinder to be restrained by fixing devices and limiting flangeson the connected steel bar. The connected steel bar is fixed with the fixing devices which are fixed to a sleeve and then subjected to grouting, and the grouting connection is combined with the mechanical connection to form two lines of defense under force, so that the integrity and reliability of the steel bar connection are improved, and at the same time, the length of the sleeve can be shortened and the reserved length of the steel bars can be shortened. In addition, compared with conventional threaded connection, the connecting steel bar presses grouting materials through the expansion head and the expansion restraint tube which are arranged at the tail end of the connecting steel bar to generate friction bounding stress, and the reliability of the steel bar connection is further improved.

Description

technical field [0001] The invention belongs to the technical field of prefabricated concrete structure steel bar connection, and relates to a hybrid grouting sleeve and a prefabricated shear wall thereof. Background technique [0002] In recent years, with the improvement of construction technology in the construction industry, people have put forward new requirements for the energy-saving and environmental protection performance of buildings and construction speed. The prefabricated concrete structure can be recycled, and the construction speed is greatly accelerated compared with the traditional cast-in-place method. Prefabricated components are mass-produced in factories, realizing the industrialization of construction and becoming a new development direction of the construction industry. The reliable connection of the main tendons of prefabricated components is the key to ensure the good seismic performance of prefabricated concrete structures. At present, the most com...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies of the existing preparation technology, the purpose of the present invention is to provide a hybrid grouting sleeve, which increases the integrity between the connecting steel bar and the grouting sleeve, improves the reliability of the connection of the steel bar, and solves the problem of the existing grouting sleeve. The problem of poor quality barrel grouting

Images