Modularized assembly foundation

Abstract

The utility model provides a modularized assembly foundation which comprises a short column and a foundation layer formed by splicing a plurality of prefabricated foundation components, each foundation component is provided with a first side wall and a second side wall which are transversely opposite to each other, and step-shaped rabbets with a plurality of steps are respectively formed on the first side wall and the second side wall. Bolt assembly holes are formed in treads of the step-shaped rabbets and vertically extend to the corresponding side surfaces penetrating through the basic component; in the two transversely-spliced basic components, the first side wall of one basic component and the second side wall of the other basic component are spliced in a tongue-and-groove mode and assembled and fixed through bolts. According to the assembly foundation provided by the utility model, when the foundation layers are transversely spliced, an assembly mode of step-shaped tongue-and-groove splicing and bolt assembly and fixation is adopted, and the flatness of a supporting surface of the assembled foundation layers is easy to guarantee; and moreover, the assembly construction of the foundation layer can be realized by adopting one foundation component, the modular construction degree of the assembly foundation can be improved, and the construction cost is correspondingly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and particularly relates to a modular assembled foundation. Background Technique

[0002] The traditional 220KV and 500kV equipment foundations are cast-in-place concrete independent foundations. The cast-in-place foundations require on-site formwork support, steel bar binding, pouring, and curing, resulting in a long construction period and not meeting the requirements of renovation and expansion project schedules; the design sizes of different foundations are not unified, consuming a variety of formwork types and increasing the complexity of construction; the on-site wet operations have a great impact on environmental protection of water.

[0003] Currently, in substations or related facilities, there is already prefabricated and assembled construction technology. In order to support corresponding equipment, existing prefabricated foundations usually include a main base buried underground and a pier arranged on the base for supporting the upper equipment; after planning and prefabricating according to the on-site drawings, they are transported and hoisted to the site for burial. When the required area of the existing foundation is large, due to the large volume and heavy structure of the prefabricated components of the main transformer foundation, the transportation and on-site hoisting costs are relatively high. Especially in renovation and expansion projects restricted by the site, it is impossible to apply large-tonnage crane equipment. In addition, there are problems in the combined assembly of existing prefabricated foundations that it is difficult to guarantee the connection accuracy and the flatness of the support surface after assembly. Summary of the Utility Model

[0004] In view of the technical defects and drawbacks existing in the prior art, the embodiment of the utility model provides a modular assembled foundation that overcomes or at least partially solves the above problems.

[0005] The modular assembled foundation includes a foundation layer and a short column. The foundation layer is formed by assembling a plurality of foundation components, and each of the foundation components is a prefabricated part; the foundation component has a first side wall and a second side wall that are opposite horizontally. Step-shaped rabbets with a plurality of steps are respectively formed on the first side wall and the second side wall. Bolt assembly holes are provided on each tread surface of the step-shaped rabbet, and the bolt assembly holes vertically extend through the corresponding side surface of the foundation component; among two horizontally spliced foundation components, the first side wall of one foundation component is rabbet-spliced with the second side wall of the other foundation component and fixed by bolt assembly.

[0006] Further, on the same foundation component, the tread surface of the step-shaped rabbet on the first side wall faces upward, and the tread surface of the step-shaped rabbet on the second side wall faces downward.

[0007] Further, the foundation layer includes a plurality of first foundation components and a plurality of second foundation components, and the length of the first foundation component is greater than the length of the second foundation component.

[0008] Further, the base layer includes a plurality of base modules spliced in sequence along the transverse direction, and each base module includes a plurality of base components spliced in sequence along the longitudinal direction;

[0009] Among the base modules, at least one of the following base modules is included:

[0010] The first base module, which is formed by splicing a plurality of first base components;

[0011] The second base module, which is formed by splicing a plurality of second base components;

[0012] The third base module, which is formed by splicing at least one first base component and at least one second base component.

[0013] Further, at least some of the base components are spliced with a plurality of other base components on one side in the transverse direction.

[0014] Further, tenon joints are provided between two longitudinally adjacent base components.

[0015] Further, the bolt assembly holes on the top surface of the base component are counterbore holes.

[0016] Further, the base component is provided with a first weight-reducing hollow cavity.

[0017] Further, the short column is bolted to the base component at the corresponding position.

[0018] Further, the short column is provided with a second weight-reducing hollow cavity.

[0019] The utility model has the following beneficial effects: For the assembled foundation provided by the utility model, when the base layer is spliced transversely, a stepped tongue-and-groove joint and bolt assembly fixation method are adopted, and the flatness of the support surface of the base layer is easy to ensure after assembly; moreover, the assembly construction of the base layer can be realized by using one type of base component, which can improve the modular construction degree of the assembled foundation and correspondingly reduce the construction cost. Description of the Drawings

[0020] Figure 1 and Figure 2 is a schematic structural diagram of the base component provided by an embodiment of the utility model;

[0021] Figure 3 is a schematic structural diagram of the short column provided by an embodiment of the utility model;

[0022] Figure 4 is a schematic structural diagram of the assembled foundation provided by an embodiment of the utility model;

[0023] Figure 5 is Figure 4Schematic diagram of the local structure therein. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the present utility model, rather than all of the embodiments. Based on the embodiments in 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.

[0025] As Figure 4 and Figure 5 shown, the modular assembly foundation includes a foundation layer 10 and a short column 2. The foundation layer 10 is formed by assembling a plurality of foundation members 1, and each of the foundation members 1 is a precast member; the foundation member 1 has a first side wall and a second side wall that are opposite to each other horizontally. Step-shaped rabbets 11 with a plurality of steps are respectively formed on the first side wall and the second side wall. Bolt assembly holes 12 are provided on each tread surface of the step-shaped rabbet 11, and the bolt assembly holes 12 extend vertically through the corresponding side surfaces of the foundation member 1; among two laterally spliced foundation members 1, the first side wall of one foundation member 1 is rabbet-spliced with the second side wall of the other foundation member 1 and fixed by bolt assembly.

[0026] The foundation member 1 is preferably a reinforced concrete member.

[0027] The short column 2 is preferably a precast member, and more preferably a precast reinforced concrete member. The short column 2 can be one or more, and is designed according to the situation of the upper equipment to be supported.

[0028] As Figure 1 and Figure 2 , preferably, the foundation member 1 is provided with a first weight-reducing hollow cavity 13, which can reduce the weight of the foundation member 1, not only save the amount of concrete used, but also facilitate the transportation and hoisting of the foundation member 1, and reduce the construction cost. The first weight-reducing hollow cavity 13 is preferably arranged in the middle part of the foundation member 1 and can penetrate the third side wall and the fourth side wall that are longitudinally opposite to each other of the foundation member 1 along the longitudinal direction; the cross-sectional shape of the first weight-reducing hollow cavity 13 can be a regular or irregular shape such as a square or a polygon. Among them, according to the shape of the foundation member 1, on the premise of meeting the requirements of the steel bar protection layer thickness, the amount of concrete used can be minimized as much as possible to achieve the purpose of economy.

[0029] As Figure 3, preferably, the short column 2 is provided with a second weight-reducing hollow cavity 21, which can reduce the weight of the short column 2, not only saving the amount of concrete used, but also facilitating the transportation and hoisting of the short column 2 and reducing the construction cost. The second weight-reducing hollow cavity 21 is preferably arranged in the middle part of the short column 2 and can penetrate one or more side walls of the short column 2. In the structure shown in Figure 3 , the second weight-reducing hollow cavity 21 penetrates the four side walls of the short column 2.

[0030] Preferably, the short column 2 is bolted to the corresponding foundation member 1. Correspondingly, threaded connection holes are respectively provided on the short column 2 and the foundation member 1. Among them, the bolt connection hole 14 on the short column 2 extends upward from its bottom surface, and the bolt connection hole 14 on the foundation member 1 extends downward from its top surface; when the foundation member 1 is provided with the first weight-reducing hollow cavity 13, the bolt connection hole 14 on the foundation member 1 preferably extends to communicate with the first weight-reducing hollow cavity 13, and when the short column 2 is provided with the second weight-reducing hollow cavity 21, the bolt connection hole 14 on the short column 2 preferably extends to communicate with the second weight-reducing hollow cavity 21, so that the fastening operation of the connecting bolts can be facilitated by means of the weight-reducing hollow cavity. In one embodiment, the bolt connection hole 14 on the foundation member 1 is set to a modulus of 200, and the bolt connection hole 14 on the short column 2 can be correspondingly matched.

[0031] In one embodiment, as shown in Figure 1 and Figure 2 , on the same foundation member 1, the tread surface of the stepped keyway 11 on the first side wall faces upward, and the tread surface of the stepped keyway 11 on the second side wall faces downward. For this situation, as shown in Figure 4 , the construction of the assembled foundation can be realized by using the same kind of foundation member 1 (allowing different length specifications), which can improve the modularization degree of the assembled foundation, facilitate standardized production and construction, and ensure the flatness of the support surface after the foundation layer 10 is assembled. Therefore, the construction cost can be correspondingly reduced, and the construction efficiency and construction quality can be improved.

[0032] In other embodiments, on the same foundation member 1, the tread surfaces of the stepped keyways 11 on the first side wall and the second side wall face the same direction. When performing horizontal assembly, the tread surfaces of the stepped keyways 11 of some foundation members 1 face downward, and the tread surfaces of the stepped keyways 11 of the remaining foundation members 1 face upward. Among the three horizontally adjacent foundation members 1, the tread surface of the stepped keyway 11 of the middle foundation member 1 faces upward, and the tread surfaces of the stepped keyways 11 of the other two foundation members 1 face downward, or the tread surface of the stepped keyway 11 of the middle foundation member 1 faces downward, and the tread surfaces of the stepped keyways 11 of the other two foundation members 1 face upward. This way can also correspondingly improve the modularization degree of the assembled foundation.

[0033] For the above two design schemes of the stepped rabbet 11, the first scheme is more conducive to ensuring the flatness of the supporting surface after the assembly of the base layer 10, and the top and bottom areas of the base member 1 are the same / basically the same. In this case, the overall stress uniformity of the base member 1 can be ensured. Especially in the case where a weight-reducing cavity is provided, there will be no weak stress positions, so it has better load-bearing capacity and can improve the application reliability of the assembled foundation.

[0034] In one embodiment, as Figure 4 and Figure 5 , the base layer 10 includes a plurality of first base members 102 and a plurality of second base members 101. The length of the first base member 102 is greater than the length of the second base member 101. The length referred to here is the longitudinal length of the base member 1. This design can improve the construction flexibility of the base layer 10 and meet the construction requirements of different sizes and even some special-shaped foundations.

[0035] Furthermore, the base layer 10 includes a plurality of base modules spliced in sequence along the transverse direction. Each base module includes a plurality of base members 1 spliced in sequence along the longitudinal direction. Among them, the above base modules can have the following several situations:

[0036] The first base module, which is spliced by a plurality of first base members 102;

[0037] The second base module, which is spliced by a plurality of second base members 101;

[0038] The third base module, which is spliced by at least one first base member 102 and at least one second base member 101; Obviously, according to different combinations of the numbers of the first base member 102 and the second base member 101, there can be multiple third base modules.

[0039] The above base layer 10 includes at least one of the first base module, the second base module and the third base module.

[0040] In one embodiment, at least part of the base members 1 are spliced with a plurality of other base members 1 laterally on one side. For example, the first side wall of a certain base member 1 can be spliced with a plurality of other base members 1 laterally, and the second side wall can also be spliced with a plurality of other base members 1 laterally. This way can improve the cooperative stress of the base members 1, thereby effectively improving the application reliability of the assembled foundation; this way is especially suitable for the case where the base layer 10 includes a plurality of first base members 102 and a plurality of second base members 101.

[0041] In Figure 1 and Figure 2In the shown structure, the stepped rabbet 11 has two steps, but it is not limited to this in actual applications. The number of steps of the stepped rabbet 11 can also be greater than two; the stepped rabbets 11 on the first side wall and the second side wall of the same basic member 1 can also have different numbers of steps.

[0042] When performing horizontal splicing between the basic members 1, the assembly bolts pass vertically through the corresponding bolt assembly holes 12. The assembly bolts can pass through the bolt assembly holes 12 successively from top to bottom. For this case, embedding locking nuts at the bolt assembly holes 12 on the upward tread can better achieve the bolt fastening effect; among them, when the bolt assembly holes 12 on the top surface of the basic member 1 are set as counterbore holes, the heads of the assembly bolts can be sunk, which is convenient for the flatness of the foundation layer support surface. The assembly bolts can also pass through the bolt assembly holes 12 successively from bottom to top. For this case, nut fastening operations need to be performed on the top surface of the basic member 1. When the bolt assembly holes 12 on the top surface of the basic member 1 are set as counterbore holes, the locking nuts can be sunk, which is convenient for the flatness of the foundation layer support surface.

[0043] When longitudinal splicing is required between the basic members 1, preferably, tenon joints are used between two longitudinally adjacent basic members 1, and correspondingly, tenon joints are respectively provided on the third side wall and the fourth side wall of the basic member 1.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A modular assembly foundation, comprising a base layer and short columns, characterized in that: The base layer is formed by assembling a plurality of base components, and each of the base components is a precast component; The base component has a first side wall and a second side wall that are opposite to each other in the horizontal direction. Step-shaped rabbets with a plurality of steps are respectively formed on the first side wall and the second side wall. Bolt assembly holes are provided on each tread surface of the step-shaped rabbet, and the bolt assembly holes extend vertically to penetrate the corresponding side surface of the base component; Among two laterally spliced base components, the first side wall of one base component is rabbet-spliced with the second side wall of the other base component and fixed by bolt assembly.

2. The modular assembly foundation according to claim 1, wherein: On the same base component, the tread surface of the step-shaped rabbet on the first side wall faces upward, and the tread surface of the step-shaped rabbet on the second side wall faces downward.

3. The modular assembly foundation according to claim 1, characterized in that: The base layer includes a plurality of first base components and a plurality of second base components, and the length of the first base component is greater than the length of the second base component.

4. The modular assembly foundation according to claim 3, wherein: The base layer includes a plurality of base modules spliced in sequence along the horizontal direction, and each base module includes a plurality of base components spliced in sequence along the vertical direction; In each of the base modules, at least one of the following base modules is included: The first base module, which is formed by splicing a plurality of first base components; The second base module, which is formed by splicing a plurality of second base components; The third base module, which is formed by splicing at least one first base component and at least one second base component.

5. The modular assembly foundation according to any one of claims 1 to 4, characterized in that: At least some of the base components are laterally spliced with a plurality of other base components on one side.

6. The modular assembly foundation according to claim 1, characterized in that: Tenon joints are provided between two longitudinally adjacent base components.

7. The modular assembly foundation according to claim 1, characterized in that: The bolt assembly holes on the top surface of the base component are countersunk holes.

8. The modular assembly foundation according to claim 1, wherein: The base component is provided with a first weight-reducing hollow cavity.

9. The modular assembly foundation according to claim 1, wherein: The short column is bolt-connected to the base component at the corresponding position.

10. The modular assembly foundation according to claim 1 or 9, characterized in that: The short column is provided with a second weight-reducing hollow cavity.

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