Slab-column joint connection structure, steel tube concrete slab-column structure and construction method
A technology of concrete filled steel tube and reinforced concrete slab, which is applied to columns, pillars, piers, etc., can solve the problems such as the inability to meet the requirements of reinforced concrete slab punching shear bearing capacity, the limited punching shear bearing capacity of reinforced concrete slabs, etc. Large critical section perimeter, high punching shear bearing capacity and good punching shear performance
Active Publication Date: 2022-02-11
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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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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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] The object of the present invention is to provide a slab-column joint connection structure, a steel tube concrete slab-column structure and a construction method that can effectively improve the punching resistance of reinforced concrete slabs.
[0027] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanyi...
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The invention discloses a slab-column node connection structure, a steel tube concrete slab-column structure including the slab-column node connection structure, and a construction method for the steel tube concrete slab-column structure, and relates to the field of steel tube concrete stiffened hybrid structures. The connection structure of slab-column joints includes steel pallets, patch panels, and restraint steel plates. Compared with traditional punching-resistance methods such as increasing plate thickness and setting shear reinforcement, the combination of steel pallets, patch panels, and restraint steel plates can effectively Increase the perimeter of the critical section of the punching shear failure of the reinforced concrete slab, enhance its punching resistance performance, and avoid the occurrence of punching shear failure of the slab-column joint. At the same time, according to the upper and lower reinforcement holes, the accurate positioning of the upper two-way steel mesh and the lower two-way steel mesh can be realized, which greatly speeds up the construction efficiency.
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...
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IPC IPC(8): E04B1/38E04G21/00E04C3/34E04C2/06
CPCE04B1/38E04G21/00E04C3/34E04C2/06E04B1/388
Inventor 陈建伟王占文车文鹏张瑞李昂边瑾靓姚久顺
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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