Steel plate and concrete combined foundation for reinforcing under-column independent foundation

Abstract

The utility model discloses a steel plate concrete combined foundation for reinforcing an under-column independent foundation, which is characterized in that steel plate hoops are additionally arranged at the bottom of a column body of an original independent foundation on an original foundation cushion layer and outside each step, and the contact surfaces of the steel plate hoops, the original independent foundation and the column body are adhered by structural adhesive; the steel plates forming the steel plate hoop are connected by welding; the utility model relates to the technical field of building transformation construction, in particular to a novel steel plate concrete combined foundation which is formed by adding steel plate hoops, steel plate strips and an original independent foundation. The bending resistance, shearing resistance and punching resistance bearing capacity of the steel plate and concrete combined foundation formed after reinforcement can meet the requirements of related specifications at the same time, damage to an original foundation by a traditional foundation reinforcement method is avoided, construction is easy and convenient, materials are saved, the construction period is shortened, and related manufacturing cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of building reconstruction construction, in particular to a steel plate concrete combined foundation for reinforcing an independent foundation under a column. Background Art

[0002] When some existing frame structure buildings are renovated, the vertical loads borne by some frame columns increase due to changes in usage functions and usage environments. After structural calculations, the bending, shear and punching bearing capacities of the original independent foundations under the columns do not meet the requirements of the specifications. How to renovate the original independent foundations under the columns and enhance their bending, shear and punching bearing capacities has become a technical problem that needs to be solved urgently by those skilled in the art. In view of this, in-depth research on the above issues has led to the creation of this case. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a steel plate concrete composite foundation for reinforcing an independent foundation under a column, which solves the problems raised in the background technology.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a steel plate concrete composite foundation for reinforcing an independent foundation under a column, wherein a steel plate hoop is added to the bottom of the column of the original independent foundation on the original foundation cushion and the outside of each step, the contact surface of the steel plate hoop with the original independent foundation and the column is bonded with structural adhesive, and the steel plates constituting the steel plate hoop are connected by welding; a steel plate strip is added to the plane of each step of the original independent foundation, the steel plate strip is connected to each steel plate hoops by welding, and the contact surface of the steel plate strip with the original independent foundation is bonded with structural adhesive.

[0005] The surfaces of the steel plate hoop and the steel plate strip are sprayed with an anti-corrosion coating.

[0006] A 50mm thick fine stone concrete protective layer is poured outside the above-mentioned steel plate concrete composite foundation.

[0007] The above-mentioned steel plate strips are arranged in a divergent shape along the horizontal direction with the center point of the original independent foundation as a reference.

[0008] The utility model provides a steel plate concrete composite foundation for strengthening an independent foundation under a column, which has the following beneficial effects: The steel plate concrete composite foundation for strengthening the independent foundation under a column is composed of an original independent foundation, a steel plate hoop and a steel plate strip, and is used for strengthening when the vertical load borne by the column increases and the flexural, shear and punching shear bearing capacities of the original independent foundation under the column do not meet the specification requirements; By adding a steel plate hoop and a steel plate strip to form a new steel plate concrete composite foundation with the original independent foundation, the flexural, shear and punching shear bearing capacities of the formed steel plate concrete composite foundation after strengthening can meet the relevant specification requirements at the same time, avoiding the damage to the original foundation by the traditional foundation strengthening method, being simple in construction, saving materials, shortening the construction period and saving the relevant cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. is a top view structural schematic diagram of the steel plate concrete composite foundation for strengthening the independent foundation under a column described in the utility model.

[0010] Figure 2 FIG. is a sectional view structural schematic diagram of the steel plate concrete composite foundation for strengthening the independent foundation under a column at the A-A position described in the utility model.

[0011] In the figure: 1. Original independent foundation; 2. Column body; 3. Steel plate hoop; 4. Steel plate strip; 5. Fine aggregate concrete protective layer; 6. Original foundation cushion layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0013] Embodiment: In combination with the attached drawings of the specification Figure 1-2It can be seen that the present application specifically designs a steel plate concrete composite foundation for the reinforcement of a column - supported isolated foundation. Steel plate hoops 3 are added at the bottom of the column body 2 of the original isolated foundation 1 and outside each step of the original foundation cushion 6. The contact surfaces of the steel plate hoops 3 with the original isolated foundation 1 and the column body 2 are bonded with structural adhesive, and the steel plates forming the steel plate hoops 3 are connected by welding; steel plate strips 4 are added on the plane of each step of the original isolated foundation 1. The steel plate strips 4 are connected to each steel plate hoop 3 by welding, and the contact surfaces of the steel plate strips 4 with the original isolated foundation 1 are bonded with structural adhesive. The steel plate concrete composite foundation for the reinforcement of the column - supported isolated foundation is composed of the original isolated foundation 1, the steel plate hoops 3, and the steel plate strips 4, and is used for the reinforcement when the vertical load borne by the column increases and the flexural, shear, and punching shear bearing capacities of the original column - supported isolated foundation do not meet the code requirements; by adding the steel plate hoops 3 and the steel plate strips 4 to form a new steel plate concrete composite foundation with the original isolated foundation 1, the flexural, shear, and punching shear bearing capacities of the formed steel plate concrete composite foundation after reinforcement can simultaneously meet the relevant code requirements, avoiding the damage to the original foundation by traditional foundation reinforcement methods, being simple in construction, saving materials, shortening the construction period, and saving related costs. Among them, it should be emphasized that before welding the newly added steel plate hoops 3 and steel plate strips 4, they should be derusted, and the derusting grade should not be lower than Sa2.5. In addition, when the steel plate hoops 3 and the steel plate strips 4 are bonded to the column body 2 and the original isolated foundation 1, the sundries on the surfaces of the column body 2 and the original isolated foundation 1 should be removed first to make the steel plates closely adhered to the column body 2 and the original isolated foundation 1 without gaps, ensuring the bonding effect.

[0014] In the specific implementation process, as a preferred setting, an anti - corrosion coating is sprayed on the surfaces of the above - mentioned steel plate hoops 3 and steel plate strips 4. In addition, a 50 - mm - thick fine aggregate concrete protective layer 5 is poured outside the steel plate concrete composite foundation for protection.

[0015] In the specific implementation process, as a preferred setting, the above - mentioned steel plate strips 4 are arranged in a divergent shape horizontally with the center point of the original isolated foundation 1 as the reference, further ensuring the stability of the connection between the steel plate hoops 3, the steel plate strips 4, and the original isolated foundation 1, and improving the overall structural strength of the foundation.

[0016] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel plate concrete composite foundation for reinforcing an independent foundation under a column, characterized in that: Steel plate hoops are added to the bottom of the column of the original independent foundation on the original foundation cushion and the outside of each step. The contact surfaces of the steel plate hoops, the original independent foundation and the column are bonded with structural adhesive, and the steel plates constituting the steel plate hoops are connected by welding; steel plate strips are added to the plane of each step of the original independent foundation. The steel plate strips are connected to each steel plate hoops by welding, and the contact surfaces of the steel plate strips and the original independent foundation are bonded with structural adhesive.

2. The steel plate concrete composite foundation for reinforcing the independent foundation under the column according to claim 1, characterized in that: The surfaces of the steel plate hoop and the steel plate strip are sprayed with an anti-corrosion coating.

3. The steel plate concrete composite foundation for reinforcing the independent foundation under the column according to claim 1, characterized in that: A 50mm thick fine stone concrete protective layer is poured outside the steel plate concrete composite foundation.

4. The steel plate concrete composite foundation for reinforcing the independent foundation under the column according to claim 1, characterized in that: The steel plate strips are arranged in a divergent shape along the horizontal direction with the center point of the original independent foundation as a reference.

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