Unlock instant, AI-driven research and patent intelligence for your innovation.

Reinforcing structure suitable for punching shear column and its construction method

A technology for strengthening structures and construction methods, which is applied in the direction of columns, pier columns, pillars, etc., can solve the problems of insignificant effect of punching shear performance, affect the appearance of the building, and the owner does not adopt it, so as to increase the punching shear resistance cross-sectional area , improve punching resistance, low cost effect

Active Publication Date: 2016-07-06
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If it is necessary to improve the punching shear capacity of the slab-column joints, it can be achieved by increasing the concrete strength, increasing the amount of longitudinal reinforcement, increasing the thickness of the slab, enlarging the section size of the column or reducing the span of the slab, but these methods are limited by the construction Even if these parameters can be changed to improve the punching resistance, it will cause a lot of waste; at present, setting the supporting plate or column cap can be used as a reinforcement method for punching resistance, but in the reinforcement process
Because the steel bars in the supporting plate and column cap need to pass through the column, the construction is difficult, so tooth-shaped grooves can only be carved around the column to facilitate the connection and transition between the supporting plate or column cap and the column. This method is very important for improving punching performance. The effect is not very obvious, and it affects the beauty of the building, so most owners do not use it

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reinforcing structure suitable for punching shear column and its construction method
  • Reinforcing structure suitable for punching shear column and its construction method
  • Reinforcing structure suitable for punching shear column and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: This embodiment specifically relates to a reinforcement structure suitable for punching-resistant columns and its construction method. The reinforcement structure increases the punching-resistant cross-sectional area by welding horizontal channel steel on both sides of the steel column on the lower side of the floor. , effectively improve the punching resistance performance.

[0024] Such as Figure 1-3 As shown, the reinforcement structure in this embodiment involves the floor 4 and the shaped steel column 1 used to support the floor 4. The shaped steel column 1 is made of H-shaped steel with equal thickness of the flange, which is suitable for axial compression members and punching-resistance reinforcement structure They are all located on the steel column 1 below the floor 4, where the flange of the H-shaped steel is defined as the side of the steel column 1, and the front and rear of the web of the H-shaped steel are the front and rear ends of the stee...

Embodiment 2

[0030] Embodiment 2: This embodiment specifically relates to a reinforcement structure suitable for punching-resistant columns and its construction method. The difference between this reinforcement structure and Embodiment 1 is that a triangular member is superimposed between the steel column and the floor. , the triangular member is perpendicular to the plane where the two triangular members in Embodiment 1 are located, to further improve the punching resistance performance, the cost is low, the economy is better, and it is suitable for building structures that require higher punching resistance performance.

[0031] Such as Figure 4-6As shown, on the basis of the steel column reinforcement structure in Embodiment 1, a group of triangular members 11 are added on the steel column 1. The triangular member 11 consists of two sections of horizontal channel steel 10 in the same plane and inclined channel steel at both ends. 9 welding structure, the plane where the triangular memb...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a reinforcing structure applicable to a punching-resistant stand column and a construction method thereof, and relates to a floor and a section steel stand column for supporting the floor. The reinforcing structure comprises at least two groups of triangular components A and B which are symmetrically distributed at the two sides of the section steel stand column, wherein the triangular components A and B consist of horizontal channel steel and two inclined channel steel sections which are arranged in the same plane and welded, wherein the web plate of the horizontal channel steel is adhered and connected to the side surface of the section steel stand column by welding, the wing edge is adhered and connected to the lower surface of the floor by welding; one end of the inclined channel steel is welded to the end part of the horizontal channel steel, the other end of the inclined channel steel is welded to the side surface of the section steel stand column. The reinforcing structure has a simple structure, a flexible various arrangement mode, convenience in construction, small influences on the existing structure, and low cost, can be used for effectively increasing the punching-resistant section area of the plate column mode and improving the punching resistance, can be used in a large area, and is a punching-resistant method with a practical value.

Description

technical field [0001] The invention belongs to the technical field of column reinforcement, and in particular relates to a reinforcement structure suitable for a punching-resistant column and a construction method thereof. Background technique [0002] Under the action of local load or concentrated reaction force, the floor slab produces normal stress and shear stress in the slab, especially a large main tensile stress is synthesized around the column head. When the main tensile stress exceeds the concrete tensile strength, oblique cracks appear around the column top. , and finally form a cone oblique section failure in the plate, that is, punching failure. [0003] If it is necessary to improve the punching shear capacity of the slab-column joints, it can be achieved by increasing the concrete strength, increasing the amount of longitudinal reinforcement, increasing the thickness of the slab, enlarging the section size of the column or reducing the span of the slab, but th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02E04C3/32
Inventor 杨石飞苏辉张静
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST