Method for connecting precast vertical concrete members

Abstract

The invention discloses a method for connecting precast vertical concrete members. The method comprises the following steps: 1) machining external threads at lower ends of upper member reinforcements and upper ends of lower member reinforcements; 2) connecting external wire connectors and the upper member reinforcements together by adopting connecting sleeves, wherein waveform ratchets are arranged on the lower parts of the external wire connectors; connecting internal wire connectors to the lower member reinforcements, wherein ratchet grooves matched with the waveform ratchets are formed in the upper parts on the inner sides of the internal wire connectors, and internal threads are formed in the lower parts of the inner sides of the internal wire connectors; a locking sleeve in threaded connection with the connecting sleeve is arranged on the outer side of the connecting sleeve, and an opening seam extending along a longitudinal direction is formed in the upper sleeve wall of the connecting sleeve; 3) hoisting the upper members in place; 4) enabling the lower parts of the external wire connectors to be downwards pressed and extruded in the internal wire connectors by utilizing dead weight of the upper members, thereby completing connection between the upper member reinforcements and the lower member reinforcements; 5) rotating the locking sleeve to the upper ends of the internal wire connectors; and 6) pouring concrete between the upper members and the lower members. The method disclosed by the invention is convenient in construction and reliable in connection quality.

Description

technical field [0001] The invention relates to a connection method of prefabricated components in a prefabricated assembled building, in particular to a connection method of prefabricated concrete vertical components. Background technique [0002] In recent years, prefabricated buildings have become the key development direction of my country's construction industry. The technical system of prefabricated buildings is mainly based on concrete structure systems, such as prefabricated concrete frame structures and prefabricated concrete shear wall structures. In prefabricated concrete structures, the reinforcement connection of prefabricated concrete components, especially prefabricated concrete vertical components (frame columns, shear walls, etc.), is the focus of prefabricated building construction. Slurry anchor lap connection, etc. The connecting sleeve of the grouting sleeve is manufactured by casting technology. The connection between the steel bar and the sleeve is co...

AI Technical Summary

Problems solved by technology

The connecting sleeve of the grouting sleeve is manufactured by casting technology. The connection between the steel bar and the sleeve is completed by filling high-strength micro-expansion cement-based materials. The disadvantages are: secondary grouting is required, construction is inconvenient, and the cost is high. There is no effective quality detection method

The grout-anchor lap connection belongs to the indirect connection of steel bars. The reserved steel bars are inserted into the reserved holes, and the holes are grouted to form a whole. The disadvantages are: secondary grouting is required, the construction is inconvenient, the lapped steel bars are long, and the steel bars are wasted.

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