Door body structure of steel-concrete combined protection door and manufacturing method of door body structure

Abstract

The invention relates to a door body structure of a steel-concrete combined protection door and a manufacturing method of the door body structure, belonging to the fields of structural engineering and protection engineering. The door body comprises a steel structure part and a concrete slab, wherein the steel structure part comprises a steel frame, a bidirectional steel beam and an outsourcing steel plate; the steel frame and the bidirectional steel beam are I-shaped steel beams, and the steel frame is positioned at the periphery of the bidirectional steel beam; the outsourcing steel plate is used for covering a door body impacting surface, a side vertical surface and a bottom surface, and the steel frame and the bidirectional steel beam, and the outsourcing steel plate and the steel frame are in bolt fixed connection or welding fixed connection; the concrete slab adopts a cast-in-place concrete slab, comprises a reinforced concrete layer and a permanent moldboard, is positioned between the steel frame and the outsourcing steel plate and covers area lattices of the bidirectional steel beam; and the top flange of the bidirectional steel beam and the inner side of the outsourcing steel plate on the impacting surface are welded with stud shear connectors through which the concrete slab and the steel structure part are fixedly connected into a whole. Compared with the prior art, the door body structure of the steel-concrete combined protection door, disclosed by the invention, has the advantages of greatly improving the flexural performance and the impact resistance ability of the door body of the protection door, and enhancing the rigidity of the door body.

Description

technical field [0001] The invention relates to a door body structure of a steel-concrete composite protective door, which belongs to the field of structural engineering and protective engineering, in particular to the field of protective doors. Background technique [0002] In the traditional protective door structure, the main structure of the door usually adopts the arrangement of cross steel beams or steel tube concrete columns plus steel plates to enhance the ability of the protective door to resist impact loads. However, analyzing the mechanical characteristics of the protective door, it can be found that when the protective door is subjected to an impact load, the door body will bear a large out-of-plane bending moment, and it is unreasonable to use steel beams or steel pipe concrete columns to resist this bending moment : Due to its material characteristics, steel beams have good flexural performance, but are easy to buckle under compression. Steel tube concrete colu...

AI Technical Summary

Problems solved by technology

However, analyzing the mechanical characteristics of the protective door, it can be found that when the protective door is subjected to impact load, the door body will bear a large out-of-plane bending moment, and it is unreasonable to use steel beams or steel pipe concrete columns to resist this bending moment : Due to its material characteristics, steel beams have good flexural performance, but are easy to buckle under compression. Steel tube concrete columns are generally only used to bear axial compression loads, have good axial compression performance, and are generally not used for bending

With the occurrence of various terrorist attacks, national defense and civil air defense projects have continuously improved the safety requirements of protective doors. Traditional designs have caused a certain amount of material waste due to their unreasonable use of materials.

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