Novel tongue-and-groove connecting structure of prefabricated concrete ladder beam and construction technology of novel tongue-and-groove connecting structure

Abstract

The invention relates to the field of connecting structures, in particular to a novel tongue-and-groove connecting structure of a prefabricated concrete ladder beam. The novel tongue-and-groove connecting structure of the prefabricated concrete ladder beam is used for installing the prefabricated concrete ladder beam on two adjacent floor ground, the novel tongue-and-groove connecting structure of the prefabricated concrete ladder beam comprises a plurality of inserting blocks and connecting pieces, the inserting blocks are connected to the lower portions of the ends of the ladder beam, the multiple inserting blocks are distributed at the two ends of the ladder beam, sectional areas of the inserting blocks are gradually reduced from top to bottom, connecting grooves are formed in the floor ground, openings of the connecting grooves are gradually reduced from top to bottom, the inserting blocks are inserted into the floor ground through the connecting grooves, and the connecting pieces are used for fixing the inserting blocks relative to the floor ground. The connecting grooves and the inserting blocks are matched for use, so that the position of the ladder beam falling on the floor ground can be automatically corrected, an operator does not need to manually push the ladder beam to slowly adjust and align, time and labor are saved during installation of the ladder beam, and the purpose of conveniently installing the ladder beam is achieved.

Description

technical field [0001] The present application relates to the field of connection structures, in particular to a novel tongue-and-groove connection structure of prefabricated concrete ladder beams. Background technique [0002] Stairs are used as communication components between floors in buildings. There are different technical specifications and requirements in terms of design shape, structural rigidity, material selection, manufacturing process and transportation assembly. In order to ensure the construction efficiency of stair installation, it is often used Precast concrete stringers build the stairs. [0003] refer to figure 1 , the existing prefabricated concrete ladder beam 1 is installed between two floors, grooves are opened on the ground 2 of the two floors, and steel bar columns 8 are vertically and fixedly connected to the ground 2 of the two floors, and the steel bar columns 8 are located in the concave In the groove, both ends of the prefabricated concrete la...

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, when the crane controls the ladder beam 1 to descend to the ground 2 of the two floors, several operators are required to manually push the ladder beam 1 at the same time to align and calibrate the through hole and the steel bar column 8. The process is relatively slow, time-consuming and labor-intensive, so that the installation of the ladder beam 1 is relatively troublesome

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