Connection joint structure of prefabricated sandwich side wall and prefabricated laminated bottom plate and construction method of connection joint structure of prefabricated sandwich side wall and prefabricated laminated bottom plate

Abstract

The invention specifically discloses a connection joint structure of a prefabricated sandwich side wall and a prefabricated laminated bottom plate and a construction method of the connection joint structure of the prefabricated sandwich side wall and the prefabricated laminated bottom plate. The connection joint structure comprises the prefabricated sandwich side wall arranged vertically and the prefabricated laminated bottom plate arranged horizontally below the prefabricated sandwich side wall, the prefabricated sandwich side wall includes an internal prefabricated plate and an external prefabricated plate, the internal prefabricated plate and the external prefabricated plate are connected through an erection truss between the internal prefabricated plate and the external prefabricated plate, and a horizontal water-stop steel plate is arranged in the middle of the bottom of the prefabricated sandwich side wall; embedded and extending U-shaped steel bars are arranged at both ends of the prefabricated laminated sandwich side wall, the U-shaped steel bars are arranged in a staggered mode in the height direction, and vertical stressed steel bars are arranged on the inner sides of theU-shaped steel bars; the prefabricated laminated bottom plate is a single-layer prefabricated plate, erection bars are arranged on the upper part of the prefabricated laminated bottom plate, and externally-extended L-shaped steel bars are arranged near the end parts of both ends of the side wall; and L-shaped reinforcing ribs are arranged at the corners of a joint of the prefabricated sandwich side wall and the prefabricated laminated bottom plate. The joint with a simple structure, reliable connection, reasonable stress and simple and convenient construction is provided, so that the overallstress performance of the connection joint structure is more superior.

Description

technical field [0001] Specifically, the present invention relates to a connection node structure between a prefabricated sandwich side wall and a prefabricated laminated floor and its construction method, especially a node with simple structure, reliable connection, reasonable force, and easy construction, which enables the overall mechanical performance of the structure become more superior. Background technique [0002] The prefabricated urban underground comprehensive pipe gallery is a new type of structural system that is vigorously promoted and developed in China. Among them, the Chinese patent application CN205742265U discloses a fully prefabricated and assembled underground comprehensive pipe gallery structure system. Composite floor, the side wall or side wall and the middle wall are prefabricated sandwich walls, and the roof is a prefabricated laminated roof. The bottom plate, side wall or side wall, middle wall, and roof are connected by cast-in-place to form a wh...

AI Technical Summary

Problems solved by technology

This method brings obvious two disadvantages: (1) Since the water-stop steel plate is pre-welded and fixed in the wall panel, its relative position cannot be fine-tuned at the construction site. Therefore, the lap welding position of the water-stop steel plate depends on the water-stop steel plate The positioning accuracy and splicing accuracy during construction, small height difference and angle deviation will make it difficult to overlap the waterproof steel plate, and often the site adopts forced bending and overlapping, causing great quality hidden dangers

Obviously, the tensile strength, shear resistance and bending resistance of this connection between wall panels are weak, and it cannot guarantee that it has sufficient connection strength and good mechanical performance

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