Steel reinforced concrete frame-off-centering steel shotcrete combined structure system

Abstract

The invention discloses a reinforced concrete frame-eccentric steel support composite structural system and relates to a reinforced concrete structure, providing the reinforced concrete frame-eccentric steel support composite structural system which has a simple and rational structure, develops the respective advantages in strength, stability and anti-shock performance of the reinforced concrete structure and the steel structure, reduces the self weight of the structure and enhances the flexibility of the building layout and a design method thereof. The system comprises a frame structure and an eccentric steel support, and the eccentric steel support is arranged inside the frame structure and is connected with the frame structure in an eccentrically arranged manner. Designing of the eccentric steel brace comprises the following steps: determining the beam-column section size according to the beam span and the limit value of axial compression ratio of the column; determining the default value of each lateral rigidity according to the requirement of the lateral deformation limit value; selecting the type and layout of eccentric steel support, determining the eccentric steel support size and the eccentricity according to the requirement of the rigidity, and working out the section area of each eccentric steel support; and checking the overall strength and deformation, and determining the section size and the reinforcing bars of the beam-column.

Description

Technical field [0001] The invention relates to a reinforced concrete structure, in particular to a reinforced concrete frame-eccentric steel support combined structure system mainly used for multi-story or high-rise industrial and civil buildings. Background technique [0002] Reinforced concrete frame structure and reinforced concrete shear wall structure are the main structural forms widely used in industrial and civil buildings. [0003] The layout of the reinforced concrete frame structure is relatively flexible and is a widely used form of building structure. However, the lateral resistance of the frame structure mainly depends on the cross-sectional size of the beam and column, the size of the column network, and the number and height of the structure. When there are more layers, the lateral displacement of the structure is larger, the lateral stiffness is smaller, the lateral bearing capacity is lower, and the horizontal displacement is not easy to meet the requirements o...

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Problems solved by technology

However, the arrangement of shear walls, on the one hand, often cannot meet the requirements of public buildings, especially it is difficult to open holes in the shear walls during the service period; When the structure enters the plastic stage, its stiffness decreases relatively

[0005] Another way to improve the lateral stiffness of reinforced concrete frames is to adopt a truss structure, that is, a structure with a central support, and the introduction of the central support makes the structure of the already weak reinforced concrete frame joints more complicated in terms of seismic resistance. Further weaken the seismic performance of the node

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