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A platform for research: civil engineering, architecture and urbanism
Method and structure for reinforcing reinforced concrete column
The invention discloses a method and a structure for reinforcing a reinforced concrete column, which are characterized in that the surface of the reinforced concrete column to be reinforced is cleaned and scabbled, then a carbon fiber grid is mounted and paved, the reinforced concrete column is reinforced by adopting ultra-high performance concrete after the mounting is completed, and FRP (Fiber Reinforced Plastic) cloth is wound according to design requirements. The ultra-high mechanical property of the ultra-high performance concrete is utilized, the ultimate bearing capacity, rigidity and durability of the reinforcing column are greatly improved, and the defect that the reinforced concrete is suddenly damaged due to the fact that the FRP material is exposed to the outside and is subjected to external adverse effects such as abrasion, collision, high temperature and freeze thawing is overcome. The carbon fiber grid is installed on the interface of the original reinforced concrete column and the ultra-high performance concrete, so that the original reinforced concrete column and the ultra-high performance concrete have good bonding performance, and the possibility of stripping damage is reduced. The restraining capacity on the concrete is improved through the surrounding FRP cloth, the bearing capacity of the concrete column is improved, and the influence of additional stress caused by early-stage shrinkage of the directly-poured ultra-high-performance concrete is reduced.
本发明公开了一种加固钢筋混凝土柱的方法及其结构，将需要加强的钢筋混凝土柱表面清理凿毛后安装并铺贴碳纤维网格，安装完成后采用超高性能混凝土加固钢筋混凝土柱，按照设计要求缠绕FRP布。利用超高性能混凝土超高的力学性能，极大提升加固柱极限承载力、刚度及耐久性并弥补FRP材料暴露在外部遭受磨损、撞击、高温、冻融等外部的不利影响而导致钢筋混凝土突然破坏的缺陷。在原钢筋混凝土柱与超高性能混凝土界面安装碳纤维网格，使原钢筋混凝土柱与超高性能混凝土之间有较好的粘结性能，减小了发生剥离破坏的可能。利用环包FRP布提高对混凝土的约束能力，提高混凝土柱的承载力，减小直接浇筑超高性能混凝土早期收缩导致的附加应力的影响。
Method and structure for reinforcing reinforced concrete column
The invention discloses a method and a structure for reinforcing a reinforced concrete column, which are characterized in that the surface of the reinforced concrete column to be reinforced is cleaned and scabbled, then a carbon fiber grid is mounted and paved, the reinforced concrete column is reinforced by adopting ultra-high performance concrete after the mounting is completed, and FRP (Fiber Reinforced Plastic) cloth is wound according to design requirements. The ultra-high mechanical property of the ultra-high performance concrete is utilized, the ultimate bearing capacity, rigidity and durability of the reinforcing column are greatly improved, and the defect that the reinforced concrete is suddenly damaged due to the fact that the FRP material is exposed to the outside and is subjected to external adverse effects such as abrasion, collision, high temperature and freeze thawing is overcome. The carbon fiber grid is installed on the interface of the original reinforced concrete column and the ultra-high performance concrete, so that the original reinforced concrete column and the ultra-high performance concrete have good bonding performance, and the possibility of stripping damage is reduced. The restraining capacity on the concrete is improved through the surrounding FRP cloth, the bearing capacity of the concrete column is improved, and the influence of additional stress caused by early-stage shrinkage of the directly-poured ultra-high-performance concrete is reduced.
本发明公开了一种加固钢筋混凝土柱的方法及其结构，将需要加强的钢筋混凝土柱表面清理凿毛后安装并铺贴碳纤维网格，安装完成后采用超高性能混凝土加固钢筋混凝土柱，按照设计要求缠绕FRP布。利用超高性能混凝土超高的力学性能，极大提升加固柱极限承载力、刚度及耐久性并弥补FRP材料暴露在外部遭受磨损、撞击、高温、冻融等外部的不利影响而导致钢筋混凝土突然破坏的缺陷。在原钢筋混凝土柱与超高性能混凝土界面安装碳纤维网格，使原钢筋混凝土柱与超高性能混凝土之间有较好的粘结性能，减小了发生剥离破坏的可能。利用环包FRP布提高对混凝土的约束能力，提高混凝土柱的承载力，减小直接浇筑超高性能混凝土早期收缩导致的附加应力的影响。
Method and structure for reinforcing reinforced concrete column
一种加固钢筋混凝土柱的方法及其结构
MA KAIZE (author) / BAI JINGZHU (author) / HE TENGWEI (author) / HAN XIAO (author) / YAO TIAN (author)
2022-05-13
Patent
Electronic Resource
Chinese
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