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Method for reinforcing pillars in buildings

A technology for building and surrounding columns, which is applied in construction, building maintenance, building components, etc. It can solve the problems of not very obvious improvement in the mechanical performance of columns after reinforcement, peeling and damage of carbon fiber cloth and column surfaces, and high reinforcement costs, so as to achieve convenient construction , low cost, easy to obtain materials

Active Publication Date: 2012-05-30
江苏盐西景轩建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the method of enlarging the column section and the method of outsourcing steel sleeves are troublesome and costly to construct, while the method of external carbon fiber cloth is a passive reinforcement technology, which does not improve the mechanical performance of the reinforced column very obviously, and at the same time, carbon fiber cloth and the surface of the column are prone to occur. The peeling damage, and the reinforcement cost is also high
Therefore, the above-mentioned commonly used reinforcement techniques all have certain limitations.

Method used

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  • Method for reinforcing pillars in buildings
  • Method for reinforcing pillars in buildings
  • Method for reinforcing pillars in buildings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like figure 1 As shown, column 1 is a concrete column, and before it is reinforced, its surface is initially cleaned, and then the steel band hoop 2 is packed and installed with a pneumatic packing machine, and the packing buckle 3 is permanently sealed and fixed, and the steel band hoop 2 The circumference of the column 1 is closed, and the distance between two adjacent steel band hoops is 100mm. When packing and installing, adjust the given air pressure value to control the packing tightness of the steel band hoops so that the tensile stress of the steel band is equal to the ultimate resistance of the steel band. 30% of the tensile strength. In the present embodiment, the material of the selected steel hoop is a blued steel strip, and stainless steel strip, galvanized steel or carbon fiber strip can also be used, and its strength is above 800MPa, and its thickness is 0.5-1.5mm. In this embodiment, it is preferably 1mm. The width is 16-50 mm, preferably 32 mm in this ...

Embodiment 2

[0029] In this embodiment, the column 1 is a masonry column. Before it is reinforced, its surface is initially cleaned, and then the steel band hoop 2 is packaged and installed with a pneumatic baler, and the packing buckle 3 is permanently sealed and fixed. The hoop 2 is closed around the circumference of the column 1, and the distance between two adjacent steel hoops is 150mm. When packing and installing, adjust the given air pressure value to control the packing tightness of the steel hoop so that the tension stress of the steel band is 25% of ultimate tensile strength. In this embodiment, the material of the selected steel band hoop is carbon fiber band, and stainless steel band, galvanized steel or blued steel band can also be used. Its strength is above 800MPa and its thickness is 0.5-1.5mm. , the width is 16-50 mm, and 22 mm is selected in this embodiment.

[0030] A better choice is that before installing the steel band 2, first paste the pre-chamfered angle steel 4 o...

Embodiment 3

[0032] In this embodiment, the column 1 is a wooden column. Before it is reinforced, its surface is initially cleaned, and then the steel band hoop 2 is packaged and installed by a pneumatic baler, and is permanently sealed and fixed with a packaging buckle 3. The hoop 2 is closed around the circumference of the column 1, and the distance between two adjacent steel hoops is 200mm. When packing and installing, adjust the given air pressure value to control the packing tightness of the steel hoop so that the tension stress of the steel band is 20% of ultimate tensile strength. In this embodiment, the material of the selected steel band hoop is stainless steel band, carbon fiber band, galvanized steel or blued steel band can also be used, its strength is above 800MPa, and the thickness is 0.5 ~ 1.5mm, this embodiment chooses 1.5mm , the width is 16-50 mm, and 16 mm is selected in this embodiment.

[0033] A better choice is that before installing the steel band hoop 2, first pas...

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Abstract

The invention relates to a method for reinforcing pillars in buildings, which comprises the following steps of: installing a steel belt hoop along the height directions of pillars at each interval of 50-300mm, and closing the steel belt hoops in the circumferential directions of the pillars. As the tensile stress of the steel belt hoops is 10%-15% of the ultimate tensile strength of a steel belt,the strength deformability of the pillars can be effectively improved, cracking can be effectively limited or delayed, and the method has the characteristics of convenience of construction, simpleness of operation, low cost and good performance.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a column reinforcement method in construction. Background technique [0002] The column directly bears all the vertical loads of the building transmitted by the floor and beams, and simultaneously bears horizontal loads such as horizontal earthquake action and wind load. The mechanical performance of the column directly determines the safety of the building structure, and it is the most important force-bearing component in the building structure. Due to changes in building functions, increased demand for building anti-seismic properties, and old buildings, a large number of building structures have been repaired and reinforced to varying degrees, among which the repair and reinforcement of reinforced concrete columns, wooden columns, and masonry columns are more prominent. for urgency. At present, the commonly used reinforcement methods for reinforced concrete columns and masonry c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G23/02E04B1/98
Inventor 杨勇薛建阳黄慧萍韩晓赢弓欢学
Owner 江苏盐西景轩建筑工程有限公司