Fabricated steel-concrete composite structure and composite connecting piece thereof

Abstract

The invention discloses a fabricated steel-concrete composite structure and a composite connecting piece thereof. The fabricated steel-concrete composite structure comprises a composite connecting piece, a concrete plate and a steel member. The combined type connecting piece comprises a high-strength bolt, a conical fixing block and a matched fastening eccentric sleeve component, the centroid of the high-strength bolt coincides with the centroid of the conical fixing block, a nut and part of a screw rod of the high-strength bolt are fixedly embedded in the conical fixing block, the conical fixing block is a circular-truncated-cone-shaped high-performance concrete block with taper, and the fastening eccentric sleeve component is fixedly connected with the conical fixing block. The conical fixing block is placed in a preformed hole with the corresponding taper in the concrete slab, and the taper of the preformed hole enables the conical fixing block not to be pushed out downwards; the exposed part of a screw rod of the high-strength bolt penetrates through the preformed hole of the steel member, and a matched fastening eccentric sleeve part is mounted in the preformed hole of the steel member. The problem that the machining precision of a prefabricated part is insufficient is solved, the stress performance is improved, in addition, the manufacturing process and installation steps of the connecting piece are simplified, and convenience is improved.

Description

technical field [0001] The invention belongs to the field of building construction connectors, and relates to an assembled steel-concrete composite structure and a composite connector thereof. Background technique [0002] At present, the type of overall assembly + partial on-site pouring is the main assembly type. The use of a fully assembled structure can not only control quality, save materials, reduce on-site labor, speed up construction, shorten the overall construction period, and reduce on-site construction waste, which is conducive to energy conservation and environmental protection. . However, there are still many challenges in practical engineering applications. The contradiction between the manufacturing accuracy of components and the redundancy of the overall installation of the structure has always been the core problem of the prefabricated structure. It is necessary to ensure the feasibility of the overall assembly of the structure and the The overall mechanic...

AI Technical Summary

Problems solved by technology

[0003] The existing steel-concrete uses high-strength bolts to connect with concrete, such as CN110359358A, but directly uses conical cast iron as the transition area between the bolts and the concrete slab, the manufacturing process is cumbersome, the parts are scattered, and the cost of the connection is greatly increased. In addition, due to There is an error in the actual position and theoretical size of the steel beam hole and the tapered hole of the prefabricated plate during processing, which makes it difficult to install the connector

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