Anti-punching steel truss

A punching-resistance, steel truss technology, applied in the direction of structural elements, building components, building reinforcements, etc., can solve the problems of inability to improve the seismic performance of the structure, and the force of the punching-resistant key cannot be fully exerted, so as to improve the impact of punching. Performance and elastic-plastic deformation ability, improved safety and shock resistance, easy installation effect

Pending Publication Date: 2021-07-23
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency that the traditional punching shear key cannot be fully utilized and the structure’s seismic performance cannot be improved, the object of the present invention is to provide a punching shear resistant steel truss to improve the punching shear resistance and ductility of reinforced concrete slab-column joints

Method used

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  • Anti-punching steel truss

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the punching shear resistant steel truss is welded by the upper longitudinal chord 1, the lower longitudinal chord 2, the connecting web 3 and the punching resisting web 4, among which the punching resisting web There are two types: vertical and oblique. The upper longitudinal chord 1 and the lower longitudinal chord 2 are used to form a spatial structure system by using the connecting web 3, and a plurality of punching-resistant webs 4 are respectively placed on both sides of the vertical direction to the plate plane, wherein The oblique web and the lower longitudinal chord 2 form an angle of 45°.

[0025] The anti-punching steel truss of the present invention is designed as an integrated structure, that is, the upper longitudinal chord 1, the lower longitudinal chord 2, the connecting web 3 and the punching-resistant web ...

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Abstract

The invention discloses an anti-punching steel truss. The anti-punching steel truss comprises two upper longitudinal chord members and two lower longitudinal chord members, wherein the two upper longitudinal chord members at the upper part are arranged on the same horizontal plane in a bilateral symmetry mode; the two lower longitudinal chord members at the lower part are arranged on the same horizontal plane in a bilateral symmetry mode; the upper longitudinal chord member and the lower longitudinal chord member at each side are located on the same vertical plane; the upper longitudinal chord members and the lower longitudinal chord members at the two ends on the same side are connected through web members arranged vertically; the upper longitudinal chord members and the lower longitudinal chord members at the two ends on the same horizontal plane are connected through web members arranged horizontally; and an anti-punching web member is arranged between the upper longitudinal chord member and the lower longitudinal chord member at the same side. The anti-punching performance and ductility of a reinforced concrete slab column joint can be improved.

Description

technical field [0001] The invention relates to the technical field of reinforced concrete slab-column joints, in particular to a punching shear resistant steel truss. Background technique [0002] The concrete slab-column structure is the weak link of its structural system because its joints are prone to brittle punching failure. The punching failure process of slab-column joints is extremely short, and its safety is worse than that of beam-column joints. Especially under the joint action of vertical load and horizontal earthquake, the unbalanced bending moment caused by the earthquake action aggravates the shear stress in the joint area. The punching resistance is even worse. The punching failure of slab-column joints can be approximately regarded as three-dimensional oblique shear failure. Under the action of vertical load or concentrated force, there are normal stress and shear stress in the slab section. A larger principal tensile stress appears. When the tensile str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/06E04B1/38E04B1/58E04B5/00
CPCE04C5/0627E04B1/58E04B5/00E04B1/388
Inventor 史庆轩蒋明月
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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