Prefabricated laminated primary and secondary beam connectors and their connection structures

Abstract

The invention provides a prefabricated superposed primary and secondary beam connecting piece. The prefabricated composite primary and secondary beam connecting piece comprises a supporting end, a prefabricated end and a connecting portion, wherein the supporting end is arranged on the upper surface of the prefabricated portion of a primary beam and is wrapped in the superposed portion of the primary beam, the prefabricated end is prefabricated on the prefabricated portion of a secondary beam and wrapped in the superposed portion of the secondary beam, the supporting end and the prefabricated end are connected through the connecting portion, and the connecting portion is wrapped in the superposed portion of the secondary beam. After concrete pouring of a primary and secondary beam superposed layer is completed, a firm whole of the primary beam and the secondary beam is formed. The combination strength between the connecting piece and the beams is high, and the tensile strength is high. In addition, the invention provides a prefabricated superposed primary and secondary beam connecting structure using the prefabricated superposed primary and secondary beam connecting piece, the prefabricated superposed primary and secondary beam connecting structure is high in structural strength and tensile strength, the prefabricated superposed primary and secondary beam is prevented from generating oblique cracks, and the loading capacity and the construction quality are improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a connection structure of prefabricated laminated primary and secondary beams and a special connecting piece thereof. Background technique [0002] In the prior art, the connecting piece used for the connection of prefabricated laminated primary and secondary beams is a blind corbel, which is composed of two parallel rectangular steel plates connected, and pads are welded at the bottom of both ends of the rectangular steel plates. The outer side is also welded with steel bars protruding downwards, and the steel bars are anchored in the prefabricated composite secondary beams. As the connector of the prefabricated laminated primary and secondary beams, the dark corbel has low bonding strength with the beam and poor pull-out resistance; and the steel bars are fixed on the outside of the steel plate by welding, which has certain quality risks. [0003] The connecti...

AI Technical Summary

Problems solved by technology

At the same time, in order to solve the problems of low structural strength at the joint of prefabricated laminated primary and secondary beams, and the stress concentration of secondary beams is prone to produce oblique cracks and affect the building quality, etc., a prefabricated laminated primary and secondary beam connection structure is provided, which has high structural strength and avoids precast laminated Diagonal cracks in secondary beams to improve load capacity and build quality

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