Transformation method and structure of built concrete columns

Abstract

The invention discloses a transformation method and structure of built concrete columns. The transformation method comprises adding one supporting steel column to the inner side of every built concrete column, wherein the built concrete columns are arranged on the bilateral sides of a workshop; enabling the supporting steel columns and the built concrete columns to be connected through a group of horizontal connecting steel plates to form steel and reinforced concrete composite columns; installing crane beams at the top ends of the supporting steel columns horizontally. According to the transformation method and structure of the built concrete columns, the built concrete columns and added crane beam steel columns are connected through the horizontal connecting steel plates to form the new integral steel and reinforced concrete composite columns, added crown block vertical loads are applied to the tops of the added steel columns directly, and accordingly the negative impact of the load eccentricity on lower columns is eliminated and the strength and stiffness of the new composite columns can be greatly improved. The structure is simple, the production and the installation are convenient, and the transformation method and structure of the built concrete columns is particularly suitable for transformation of the built workshop concrete columns which are large in added crown block lifting capacity and large in vertical load and load eccentricity.

Description

technical field [0001] The invention relates to a reconstruction method and structure of an existing concrete column, and belongs to the technical field of adding a crane beam to the concrete column. Background technique [0002] In today's industrial buildings, it is necessary to add a crane to the existing factory building to facilitate the lifting and transportation of materials due to production needs or process requirements. However, the concrete column of the built factory building only considers the impact of roof load and wind load. Due to the factors of vertical load and horizontal braking force, the strength and stiffness of the concrete column of the built factory building cannot meet the requirements of the design code. Generally, there are two commonly used transformation methods to solve the above problems: the first one is to pour concrete corbels with reinforced concrete enclosures at the places where the corbels of crane beams supporting the crane need to be...

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Problems solved by technology

[0002]In today's industrial buildings, due to production needs or process requirements, it is necessary to add cranes in the built factory buildings to facilitate lifting and transportation of materials, but the concrete columns of the built factory buildings Only the influence of roof load and wind load is considered. If the vertical load and horizontal braking force of the newly added crane are considered at the same time, the strength and stiffness of the concrete column of the built factory building cannot meet the requirements of the design specification.

Generally, there are two commonly used transformation methods to solve the above problems: the first one is to pour concrete corbels with reinforced concrete enclosures at the places where the corbels of crane beams supporting the crane need to be increased, and use reinforced concrete enclosures to enlarge them below the surface of the corbels. Reinforcement of the lower column section, this method is simple in construction, but takes a long time to maintain the formwork

The second method is to use the outsourcing steel enclosure method to strengthen the existing factory building columns and increase the steel corbels on the columns. The construction process of this method is more complicated, and the construction quality is difficult to guarantee

The above two transformation methods are suitable for adding light-duty crane factory building columns with small lifting capacity, small vertical load and eccentricity. Can not solve the above problems well

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