Novel box-type independent foundation structure

Abstract

The utility model provides a novel box type independent foundation structure. Comprising a concave foundation bottom plate (1), a concave foundation cover plate (2), a side wall steel plate (3), a plurality of combined studs (4) and a plurality of stiffening plates (5). The number of the concave foundation bottom plates (1) is two, and after the two concave foundation bottom plates (1) are connected, a first square hole is formed between the two concave foundation bottom plates (1). The number of the concave foundation cover plates (2) is two, and after the two concave foundation cover plates (2) are connected, a second square hole is formed between the two concave foundation cover plates (2). 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 (10). A plurality of combined studs (4) are arranged on the side wall steel plate (3); the stiffening plates (2) are arranged between the concave foundation bottom plate (1) and the concave foundation cover plate (2). According to the utility model, the existing independent columns are used as stress points of the upper structure, so that the support does not need to be unloaded, larger upper load can be borne, and the risk of structural deformation does not exist.

Description

Technical Field

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

[0002] In the project of adding floors to existing old buildings, it is inevitable to conduct recheck and calculation of 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 this kind of floor-adding renovation, which seriously endangers the safety of the building. Facing an independent column without a foundation and bearing a large upper load, simply strengthening the independent column cannot solve the fundamental problem. How to add a new foundation is the top priority. The conventional methods include the following two: (1) Unload and support around the independent column, and at the same time take strengthening measures to prevent the independent column from becoming a hanging column and the structure from deflecting downward. Then, hollow out the bottom of the column, add a reinforced concrete independent foundation, and embed insert bars in the independent foundation. Finally, implant the insert 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.

[0003] The above two methods also have the following deficiencies: For the first method, although a new independent foundation is added, the independent column is not strengthened; for the second method, the existing independent column is demolished, and a new independent foundation and independent column are poured.

[0004] Using the above conventional methods to add an independent foundation requires solving the following problems: 1. A large amount of unloading and support must be used, and at the same time, strengthening measures are needed to prevent the structure from deflecting and deforming; 2. Re-pouring a 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

[0005] Aiming at the defects in the prior art, the purpose of the utility model is to provide a novel box-type independent foundation structure.

[0006] The technical solution of the utility model is as follows:

[0007] The utility model relates to a novel box-type independent foundation structure, including: a concave foundation bottom plate 1, a concave foundation cover plate 2, a side wall steel plate 3, a plurality of combined stud bolts 4, and a plurality of stiffening plates 5;

[0008] Among them, the number of the concave foundation bottom plates 1 is two. After the two concave foundation bottom plates 1 are connected, a first square hole is formed in the middle;

[0009] The number of the concave foundation cover plates 2 is two. After the two concave foundation bottom plates 1 are connected, a second square hole is formed in the middle;

[0010] 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 10 at the bottom of the column;

[0011] A number of combined stud bolts 4 are arranged on the side wall steel plates 3;

[0012] A number of stiffening plates 5 are arranged between the concave foundation bottom plate 1 and the concave foundation cover plate 2; The structure involved in the utility model borrows the existing independent column as the force-bearing point of the upper structure, without unloading support, and there is no risk of structural deformation.

[0013] Preferably, the steel pipe sleeve 10 at the bottom of the column is welded and connected to the first square hole and the second square hole respectively.

[0014] Preferably, a number of exhaust holes 6 are arranged on the concave foundation cover plate 2.

[0015] Preferably, the a number of combined stud bolts 4 are welded on the side wall steel plates 3.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) Through the ingenious design structure, the utility model borrows the existing independent column as the force-bearing point of the upper structure, without unloading support, and there is no risk of structural deformation.

[0018] (2) The utility model will not disturb the foundation at the bottom of the independent column, and when the high-performance grouting material penetrates into the foundation, it can further improve the compactness and bearing capacity of the foundation.

[0019] (3) The utility model can bear a greater upper load. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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:

[0021] Figure 1 It is the operation diagram of the first step in the construction process of the utility model;

[0022] Figure 2 It is the operation diagram of the second step in the construction process of the utility model;

[0023] Figure 3 It is the operation diagram of welding the concave foundation bottom plate to the outside of the bottom of the steel pipe sleeve at the bottom of the column in the third step of the construction process of the utility model;

[0024] Figure 4 It is the operation diagram of the step of welding the stiffening plate and the concave foundation cover plate in the third step of the construction process of the utility model;

[0025] Figure 5This is the structural diagram of the new box-type independent column foundation finally formed in the third step of the construction process of the present utility model;

[0026] Figure 6 This is the operation diagram of the fourth step in the construction process of the present utility model;

[0027] Figure 7 This is the operation diagram of the fifth step in the construction process of the present utility model;

[0028] Figure 8 This is the operation diagram of reinforcing stirrups in the sixth step of the construction process of the present utility model;

[0029] Figure 9 This is the operation diagram of pouring the reinforced column in the sixth step of the construction process of the present utility model;

[0030] Figure 10 This is the disassembly diagram of the structure of the present utility model;

[0031] Figure 11 This is the assembly diagram of the structure of the present utility model;

[0032] Annotation of the attached drawings: 1 is the concave foundation bottom plate, 2 is the concave foundation cover plate, 3 is the side wall steel plate, 4 is the combined stud, 5 is the stiffening plate, 6 is the exhaust hole, 7 is the independent column before reinforcement, 8 is the backfill soil and decorative layer, 9 is the column bottom subgrade, 10 is the column bottom steel pipe sleeve, 11 is the longitudinal steel bar, 12 is the slurry, 13 is the stirrup, 14 is the independent column after reinforcement. Specific embodiments

[0033] 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.

[0034] Embodiment

[0035] A new box-type independent foundation structure in this embodiment, as Figure 10 , Figure 11 shown, includes: a concave foundation bottom plate 1, a concave foundation cover plate 2, a side wall steel plate 3, a plurality of combined studs 4, and a plurality of stiffening plates 5;

[0036] Among them, the number of the concave foundation bottom plates 1 is two. After the two concave foundation bottom plates 1 are connected, a first square hole is formed in the middle;

[0037] The number of the concave foundation cover plates 2 is two. After the two concave foundation bottom plates 1 are connected, a second square hole is formed in the middle;

[0038] 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 10 at the bottom of the column;

[0039] A number of combined stud bolts 4 are arranged on the side wall steel plates 3;

[0040] A number of stiffening plates 5 are arranged between the concave foundation bottom plate 1 and the concave foundation cover plate 2; The structure involved in the present utility model borrows the existing independent column as the force-bearing point of the upper structure, without unloading support, and there is no risk of structural deformation.

[0041] Preferably, the steel pipe sleeve 10 at the bottom of the column is respectively welded and connected to the first square hole and the second square hole.

[0042] Preferably, a number of exhaust holes 6 are arranged on the concave foundation cover plate 2.

[0043] Preferably, the number of combined stud bolts 4 are welded on the side wall steel plates 3.

[0044] The construction method of a novel box-type independent foundation structure involved in this embodiment is as follows:

[0045] Step 1: Excavate the backfill soil and the decorative layer 8 around the independent column 7 before reinforcement until the bottom base layer 9 of the column is exposed, and roughen the outer surface of the column, as shown in Figure 1 shown;

[0046] Step 2: Weld the combined stud bolts 4 to the side wall steel plates 3, and weld the side wall steel plates into a steel pipe sleeve 10 at the bottom of the column, as shown in Figure 2 shown;

[0047] Step 3: Weld the concave foundation bottom plate 1 to the outside of the bottom of the steel pipe sleeve 10 at the bottom of the column, as shown in Figure 3 shown; The stiffening plates 5 are welded with the concave foundation cover plate 2, as shown in Figure 4 shown; The concave foundation bottom plate 1, the stiffening plates 5, the concave foundation cover plate 2 and the steel pipe sleeve 10 at the bottom of the column are welded to form the novel box-type independent column foundation structure involved in the present utility model, as shown in Figure 5 shown;

[0048] Step 4: Bind the longitudinal steel bars 11 for independent column reinforcement (or reserved inserted steel bars, with the same method as this step). The lower end of the longitudinal steel bars 11 is welded to the inside of the steel pipe sleeve 10 at the bottom of the column, and the longitudinal steel bars 11 are bent inward to leave the thickness of the steel bar protection layer, as shown in Figure 6 shown;

[0049] Step 5: Fill the inside of the steel pipe sleeve 10 at the bottom of the column with grouting material 12, and at the same time fill the excavation part in Step 1 and cover the concave foundation cover plate 1, as shown in Figure 7 shown;

[0050] Step 6: Bind the stirrups 13 for independent column reinforcement, as shown inFigure 8 As shown, the independent column 14 after formwork support pouring and reinforcement can be seen in Figure 9 as shown.

[0051] Compared with the prior art, the utility model has the following beneficial effects: Through the ingenious design structure, the utility model borrows the existing independent column as the stress point of the upper structure, without unloading support and there is no risk of structural deformation. The utility model will not disturb the foundation at the bottom of the independent column, and when the high-performance grouting material penetrates into the foundation, it can further improve the density and bearing capacity of the foundation. The utility model can bear a greater upper load.

[0052] The specific embodiments of the utility model have been described above. It should be understood that the utility model is not limited to the above 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 utility model.

Claims

1. A new type of box-type independent foundation structure, characterized in that: include: A concave foundation bottom plate (1), a concave foundation cover plate (2), a side wall steel plate (3), a plurality of combined studs (4), and a plurality of stiffening plates (5); There are two concave base bottom plates (1), and after the two concave base bottom plates (1) are connected, a first square hole is formed in the middle; There are two concave basic cover plates (2), and after the two concave basic bottom plates (1) are connected, a second 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 (10); A plurality of combined bolts (4) are arranged on the side wall steel plate (3); A plurality of stiffening plates (5) are arranged between the concave foundation bottom plate (1) and the concave foundation cover plate (2).

2. The novel box-type independent foundation structure according to claim 1 is characterized in that: The column bottom steel pipe sleeve (10) is respectively welded to the first square hole and the second square hole.

3. The novel box-type independent foundation structure as claimed in claim 1 is characterized in that: The concave base cover plate (2) is provided with a plurality of exhaust holes (6).

4. The novel box-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).

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