Plate and column joint connecting structure, steel pipe concrete plate and column structure and construction method

Abstract

The invention discloses a plate and column joint connecting structure, a steel pipe concrete plate and column structure including the plate and column joint connecting structure and a construction method of the steel pipe concrete plate and column structure, and relates to the field of steel pipe concrete stiffening and mixing structures. The plate and column joint connecting structure comprises asteel supporting plate, batten plates and a constraint steel plate. Compared with traditional plate and column joint punching resisting means of increasing plate thicknesses, arranging shear reinforcements and the like, the steel supporting plate, the batten plates and the constraint steel plate are adopted for cooperating so that the critical cross-section perimeter of punch failures of a reinforced concrete plate can be effectively increased, the punching resistance is enhanced, and punch failures of plate and column joints are avoided, Meanwhile, through upper steel bar holes and lower steel bar holes, an upper-layer bidirectional reinforcing mesh and a lower-layer bidirectional reinforcing mesh can be located accurately, and the construction efficiency can be improved.

Description

technical field [0001] The invention relates to the field of steel tube concrete stiffened hybrid structures, in particular to a slab-column joint connection structure, a steel tube concrete slab-column structure and a construction method. Background technique [0002] Concrete-filled steel tube slab-column (concrete-filled steel tube composite column-reinforced concrete slab) joints are prone to punching failure around the concrete-filled steel tube composite column, mainly because the concrete cannot bear the large main tensile stress, and the punching shear failure is a kind of brittle failure , compared to other ductile failures, punching failure occurs suddenly and may lead to the collapse of the overall structure. In order to transform the brittle failure of slab-column joints into ductile bending failure, it is necessary to increase the punching shear bearing capacity of reinforced concrete slabs. [0003] Improving the punching shear bearing capacity of reinforced c...

AI Technical Summary

Problems solved by technology

[0003] Improving the punching shear bearing capacity of reinforced concrete slabs is mainly to increase the distribution range of the main tensile stress of concrete around concrete-filled steel tube composite columns. Increase the size of the column section, etc., but the existing methods are limited to improve the punching resistance of reinforced concrete slabs, and often cannot meet the requirements of the punching resistance of reinforced concrete slabs. Looking for a more effective means of punching resistance is the steel tube concrete slab column Basis for further development of the structure

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