Double-steel-sheet and concrete combined core-tube structure with built-in corrugated steel sheets

Abstract

The invention provides a double-steel-sheet and concrete combined core-tube structure with built-in corrugated steel sheets. The corrugated steel sheet and a plurality of steel cover plates are vertically welded and connected to form an elongated grille steel tube wall board by borrowing ideas from a steel tube and concrete combined structure, high-strength concrete is poured into grille steel tubes to form an elongated grille steel tube and concrete combined shear wall board, and the elongated grille steel tube wall board and in-tube concrete columns are used in a combined mode, complement each other's advantages and work cooperatively. The novel shear wall board is in welding connection with edge steel columns and edge steel beams, and an end portion steel tube concrete core column is arranged at the intersecting corner position of wall bodies of core-tube shear walls to form the novel double-steel-sheet and concrete combined core-tube structure with the built-in corrugated steel sheets. A steel frame-structural system of the novel combined structure core tubes has the advantages of being large in structural rigidity, high in compression bearing capacity, convenient to construct, strong in anti-bending capacity, high in yield load, good in anti-seismic ductility, good in energy dissipation capacity and the like, and the double-steel-sheet and concrete combined core-tube structure can be used for a 60-storey steel structure building and a super high-rise steel structure building with more than 60 storeys.

Description

technical field [0001] The invention belongs to the field of building structure engineering and relates to a high-rise building core tube structure, in particular to a double steel plate concrete composite core tube structure with built-in corrugated steel plates. Background technique [0002] The core tube is in the central part of a high-rise building, and is surrounded by elevator shafts, stairs, ventilation shafts, cable shafts, public toilets, and some equipment rooms to form a central core tube. With the development of my country's real estate construction, there are more and more high-rise buildings. The frame-core tube structure system is the mainstream structural form widely used in high-rise buildings, and its advantage lies in that it can strive for as wide a use space as possible. [0003] At present, high-rise building structures often adopt a steel frame-concrete core tube structure system. The frame columns and frame beams use steel structure materials with e...

AI Technical Summary

Problems solved by technology

However, whether the steel plate and concrete can work together effectively has a great influence on the mechanical properties of the double steel plate concrete composite shear wall. Can not give full play to the performance of the two materials of concrete and steel

[0007] According to relevant data, densely distributed studs or opposite tension bolts are used to tie the double-layer steel plates, and the construction workload is relatively large. Relevant tests show that for double-steel plate concrete shear walls with densely distributed stud connections, it is rare to encounter major earthquakes. local buckling of the steel plate and concrete collapse at the bottom will occur, which indicates that the stress of the tensile structure measures is unreliable, and cannot meet the seismic ductility structural measures of the shear wall of super high-rise buildings.

Relevant tests have shown that the double-steel plate inner-filled concrete composite shear wall structure with welded and tied steel plates has excellent mechanical performance and seismic ductility, but construction is difficult and the construction labor workload is large, so reform is urgently needed

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