Reactive powder fiber concrete reinforced concrete column and reinforcement method

Abstract

The invention discloses a method for reinforcing a reactive powder fiber concrete reinforced concrete column. The method includes the steps that firstly, cleaning treatment is carried out on the surface of an original concrete column so that a concrete structure layer of the original concrete column can be exposed, and then impurity removal and dabbing are carried out till a new surface is exposed and an aggregate surface of the concrete structure layer is reached; secondly, positioning, lining and drilling are carried out on the surface of the column, shear pins are embedded into drilled holes through rib embedding glue, and a reinforcing mesh is bound at the lining position; thirdly, interface agents are applied, specifically, reactive powder fiber concrete is applied with the interface agents in a layered mode, joints between the layers are made staggered, and reinforcement of the concrete column is completed after the processes of flattening, burnishing and maintenance. The reinforced concrete column obtained through the method mainly comprises the original concrete column structure layer and a reactive powder fiber concrete reinforced layer, and the reactive powder fiber concrete reinforced layer is formed by mutually overlaying multiple unit reinforced layers with the reactive powder fiber concrete as a base material and the reinforcing mesh as a reinforcing material. The reactive powder fiber concrete reinforced concrete column has the advantages of being small in sectional dimension change, good in durability, long in service life, easy and convenient to construct, high in construction efficiency and the like.

Description

technical field [0001] The invention relates to a reinforcement structure and a reinforcement method, in particular to a concrete reinforcement column and a method for reinforcing the original concrete column. Background technique [0002] Due to natural disasters, changes in housing functions, errors in design, construction and management, environmental corrosion and damage accumulation, and old buildings reaching their designed service life, the construction industry is facing the problem of how to maintain, renovate and reinforce existing building structures. Existing methods such as enlarging section reinforcement, outsourcing steel reinforcement, pasting carbon fiber reinforcement, bonded steel reinforcement, steel mesh composite mortar reinforcement, etc., have shown their respective deficiencies in many years of engineering practice. For example, the method of enlarging the section has certain influence on the appearance and headroom of the structure; the force of the...

AI Technical Summary

Problems solved by technology

For example, the method of enlarging the section has certain influence on the appearance and headroom of the structure; the force of the node area in the outsourcing steel reinforced structure is complicated, and the structural treatment is quite difficult; the fire resistance of the components reinforced with carbon fiber is poor, and special fire prevention treatment is required; Bonded steel reinforcement is only suitable for components that can withstand static forces and are in normal humidity environments; the reinforced mesh composite mortar reinforcement method has certain limitations on the increase in the bearing capacity of components; the prestressed reinforcement method is not suitable for use in high humidity environments Reinforcement of concrete structures under concrete or concrete structures with large shrinkage and creep

[0003] Concrete columns are one of the most commonly used construction engineering components in previous building structures. What needs to be specially mentioned is that when the bearing capacity of concrete column components is insufficient due to improper design or construction, or changes in use functions, or due to natural disasters, When the concrete column components are damaged due to man-made damage, aging of building materials, etc., the reinforcement of concrete columns is particularly important. However, when the existing reinforcement methods are applied to the reinforcement of concrete columns, the reinforcement effect is not ideal. Even if the reinforcement The effect is acceptable and meets the requirements of engineering practice, but its reinforcement cost, construction efficiency and other aspects are not satisfactory. These technical problems are more prominent in the reinforcement construction of high-strength concrete columns or concrete columns with high seismic requirements.

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