Novel plate type independent foundation structure

Abstract

The utility model provides a novel plate type independent foundation structure. The novel plate type independent foundation structure comprises a concave foundation bottom plate (1), a plurality of stiffening plates (2), a side wall steel plate (3) and a plurality of combined studs (4). The number of the concave foundation bottom plates (1) is two, and after the two concave foundation bottom plates (1) are connected, a square hole is formed between the two concave foundation bottom plates (1). The number of the side wall steel plates (3) is four, and the four side wall steel plates (3) are sequentially connected to form a column bottom steel pipe sleeve (8). A plurality of combined studs (4) are arranged on the side wall steel plate (3); the stiffening plates (2) are arranged on the concave foundation slab (1). According to the utility model, the existing independent column is used as an upper structure stress point, so that the support does not need to be unloaded, and the structure deformation risk does not exist; no disturbance is generated to the independent column bottom foundation, the compactness and the bearing capacity of the foundation can be improved, on-site wet operation can be reduced to the maximum extent, the construction period is greatly shortened, and operation is easy, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the field of construction, and particularly to a novel plate - type independent foundation structure. Background Art

[0002] In the project of adding floors to existing old buildings, it is inevitable to recheck and calculate the foundation. However, after on - site investigation, it will be found that some old buildings did not have a foundation due to tight funds during construction, and the columns were directly located on the foundation (including natural foundation and artificial foundation). Obviously, there are great risks in such floor - adding renovations, seriously endangering the safety of the building. Facing the independent columns without a foundation, simply strengthening the independent columns cannot solve the fundamental problem. How to add a new foundation is the top priority. There are two conventional methods as follows: (1) Unload and support around the independent column, and at the same time take strengthening measures to prevent the structure from deflecting downward after the independent column becomes a hanging - foot column. Then, hollow out the bottom of the column, add a reinforced concrete independent foundation, and embed anchor bars in the independent foundation. Finally, implant the anchor bars into the independent column and pour them into one body; (2) Unload and support around the independent column, demolish the existing independent column, and at the same time take strengthening measures to prevent the structure at the position of the independent column from deflecting downward. Then, locally excavate and add a reinforced concrete independent foundation, and then add a new independent column. However, the above two methods have deficiencies: Method (1) although adds a new independent foundation, does not reinforce the independent column; Method (2) although demolishes the existing independent column and re - pours the independent foundation and the independent column.

[0003] Adopting the above - mentioned conventional methods to add an independent foundation needs to solve the following problems: 1. A large amount of unloading and support must be adopted, and at the same time, strengthening measures are needed to prevent the structure from deflecting and deforming; 2. Re - pouring the reinforced concrete independent foundation causes great disturbance to the foundation soil, has a lot of wet operations, and has a long cycle. Content of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the utility model is to provide a novel plate - type independent foundation structure.

[0005] The technical solution of the utility model is as follows:

[0006] The utility model relates to a novel plate - type independent foundation structure, including: a concave foundation bottom plate 1, several stiffening plates 2, side - wall steel plates 3, and several composite stud bolts 4;

[0007] Among them, the number of the concave foundation bottom plates 1 is two. After the two concave foundation bottom plates 1 are connected, a square hole is formed in the middle;

[0008] The number of the side - wall steel plates 3 is four. The four side - wall steel plates 3 are sequentially connected to form a column - bottom steel pipe sleeve 8;

[0009] Several composite stud bolts 4 are arranged on the side - wall steel plates 3;

[0010] A number of stiffening plates 2 are arranged on the concave foundation bottom plate 1, increasing a large amount of unloading supports and at the same time avoiding the phenomenon of structural downward deflection deformation.

[0011] Preferably, the steel pipe sleeve 8 at the column bottom is arranged in the square hole.

[0012] Preferably, the several combined stud bolts 4 are welded on the side wall steel plate 3.

[0013] Preferably, the steel pipe sleeve 8 at the column bottom is welded and connected to the concave foundation bottom plate 1.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) Through the ingenious design structure of the utility model, the existing independent column is borrowed as the force-bearing point of the upper structure, without the need for unloading supports, and there is no risk of structural deformation.

[0016] (2) The utility model will not disturb the foundation under the independent column. When the high-performance grouting material penetrates into the foundation, it can further improve the density and bearing capacity of the foundation.

[0017] (3) The utility model can minimize the on-site wet operation to the greatest extent, greatly shorten the construction period, is simple to operate, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, purposes and advantages of the utility model will become more obvious:

[0019] Figure 1 It is the operation diagram of the first step in the construction process of the utility model;

[0020] Figure 2 It is the operation diagram of the second step in the construction process of the utility model;

[0021] Figure 3 It is the operation diagram of welding the concave foundation bottom plate and the steel pipe sleeve in the third step of the construction process of the utility model;

[0022] Figure 4 It is the operation diagram of welding the stiffening plate in the third step of the construction process of the utility model;

[0023] Figure 5 It is the operation diagram of the fourth step in the construction process of the utility model;

[0024] Figure 6 It is the operation diagram of the fifth step in the construction process of the utility model;

[0025] Figure 7 It is the operation diagram of reinforcing the stirrups in the sixth step of the construction process of the utility model;

[0026] Figure 8 This is the operation diagram for pouring and strengthening columns in the sixth step of the construction process of the present utility model;

[0027] Figure 9 This is the structure disassembly diagram of the present utility model;

[0028] Figure 10 This is the structure assembly diagram of the present utility model;

[0029] Annotation of the attached drawings: 1 is the concave foundation bottom plate, 2 is the stiffening plate, 3 is the side wall steel plate, 4 is the combined stud, 5 is the independent column before strengthening, 6 is the backfill soil and decorative layer, 7 is the ground base layer, 8 is the steel pipe sleeve at the column bottom, 9 is the longitudinal steel bar, 10 is the slurry, 11 is the stirrup, and 12 is the independent column after strengthening. Specific implementation mode

[0030] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made. These all belong to the protection scope of the present utility model.

[0031] Embodiment

[0032] This embodiment relates to a new type of plate-type independent foundation structure, including: a concave foundation bottom plate 1, several stiffening plates 2, side wall steel plates 3, and several combined studs 4, as shown in Figure 9 , Figure 10 shown:

[0033] Among them, the number of the concave foundation bottom plates 1 is two. After the two concave foundation bottom plates 1 are connected, a square hole is formed in the middle;

[0034] The number of the side wall steel plates 3 is four, and the four side wall steel plates 3 are sequentially connected to form a steel pipe sleeve 8 at the column bottom;

[0035] Several combined studs 4 are arranged on the side wall steel plate 3;

[0036] Several stiffening plates 2 are arranged on the concave foundation bottom plate 1, which increases a large amount of unloading support and simultaneously avoids the phenomenon of structural deflection and deformation.

[0037] The steel pipe sleeve 8 at the column bottom is arranged in the square hole.

[0038] The several combined studs 4 are welded to the side wall steel plate 3.

[0039] The steel pipe sleeve 8 at the column bottom is welded and connected to the concave foundation bottom plate 1.

[0040] The construction method of the new plate - type independent foundation structure involved in this embodiment is specifically as follows:

[0041] Step 1: Excavate the backfill soil and decorative layer 6 around the independent column 5 before reinforcement until the subgrade layer 7 of the independent column 5 is exposed, and roughen the outer surface of the independent column 5, as shown in Figure 1 the figure;

[0042] Step 2: Weld the composite stud 4 to the side - wall steel plate 3, and weld the side - wall steel plates 3 into a steel pipe sleeve 8 at the bottom of the column, as shown in Figure 2 the figure;

[0043] Step 3: Weld the concave - shaped foundation bottom plate 1 to the outside of the bottom of the steel pipe sleeve 8 at the bottom of the column, as shown in Figure 3 the figure; Weld the stiffening plate 2 to form the new plate - type independent column foundation involved in the present utility model, as shown in Figure 4 the figure;

[0044] Step 4: Bind the longitudinal reinforcement 9 for reinforcing the independent column 5 (or reserve the inserted reinforcement, and the construction method is the same as this step). The lower end of the longitudinal reinforcement 9 is welded to the inside of the steel pipe sleeve 8 at the bottom of the column, and the longitudinal reinforcement 9 is bent inward to leave the thickness of the steel - bar protection layer, as shown in Figure 5 the figure;

[0045] Step 5: Fill the inside of the steel pipe sleeve 8 at the bottom of the column with grouting material 10, and at the same time fill the excavation part in Step 1 and cover the upper surface of the stiffening plate 2, as shown in Figure 6 the figure;

[0046] Step 6: Bind the stirrups 11 for reinforcing the independent column 5, as shown in Figure 7 the figure, form the formwork and pour the reinforced independent column 12, as shown in Figure 8 the figure.

[0047] Through the ingenious design structure, the present utility model borrows the existing independent column as the force - bearing point of the upper structure, without the need for unloading support, and there is no risk of structural deformation. The present utility model will not disturb the foundation under the independent column bottom. When the high - performance grouting material penetrates into the foundation interior, it can further improve the compactness and bearing capacity of the foundation. The present utility model can minimize the on - site wet operation to the greatest extent, greatly shorten the construction period, and is simple to operate, safe and reliable.

[0048] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above - mentioned specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present utility model.

Claims

1. A new type of plate-type independent foundation structure, characterized in that: include: A concave foundation bottom plate (1), a plurality of stiffening plates (2), a side wall steel plate (3), and a plurality of combined studs (4); There are two concave foundation bottom plates (1), and after the two concave foundation bottom plates (1) are connected, a square hole is formed in the middle; The number of the side wall steel plates (3) is four, and the four side wall steel plates (3) are connected in sequence to form a column bottom steel pipe sleeve (8); A plurality of combined bolts (4) are arranged on the side wall steel plate (3); A plurality of stiffening plates (2) are arranged on the concave foundation bottom plate (1).

2. The novel plate-type independent foundation structure according to claim 1 is characterized in that: The column bottom steel pipe sleeve (8) is arranged in the square hole.

3. The novel plate-type independent foundation structure according to claim 1 is characterized in that: The plurality of combined bolts (4) are welded to the side wall steel plate (3).

4. The novel plate-type independent foundation structure according to claim 2 is characterized in that: The column bottom steel pipe sleeve (8) is welded to the concave foundation bottom plate (1).

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