Generator foundation structure with anti-pulling capacity and removable form

Abstract

The utility model relates to the field of generator foundation structure, concretely is a generator foundation structure with anti -pulling ability and can exempt from formwork. Purpose is to provide a kind of generator foundation structure with anti -pulling ability and can exempt from formwork, this generator foundation structure should have the function of anti -pulling force of concrete, and with simple structure and the characteristics of convenient to use. Technical scheme is a kind of generator foundation structure with anti -pulling ability and can exempt from formwork, it is characterized in that: the lower rack foundation embedded part and stator foundation embedded part are embedded in concrete by setting up the bushing of outer protruding slot;The bushing includes the bottom plate and side plate of welding connection;Bushing is the rectangular body of vertical arrangement and top end opening, four side plates are sequentially connected to form the side wall around bushing, and the bottom plate forms the bottom surface of rectangular body;Each side plate is equipped with the same structure in vertical direction sequentially arranged several outer protruding slots, and the groove bottom of each outer protruding slot protrudes to the outside of bushing.

Description

Technical Field

[0001] This utility model relates to the field of generator foundation structure, specifically a generator foundation structure with anti-uplift capability and which can be installed without disassembling the template. Background Technology

[0002] Generator foundations must withstand enormous axial loads and require extremely high positioning accuracy. To facilitate installation and ensure precise placement of the equipment, generator foundations are typically constructed using a two-stage concrete pouring method: during the first stage of concrete pouring, holes for the second stage generator foundation are pre-drilled, and the foundation components are precisely installed in the holes before the second stage of concrete pouring is carried out.

[0003] To reserve foundation holes for the second-phase generator, formwork is often required, which is removed after the concrete pouring is completed and the curing period has passed. Because the generator foundation holes are long and narrow, fixing and removing the formwork presents significant challenges. Furthermore, given the large load on the generator foundation and the fact that the foundation concrete is poured in two phases, it is necessary not only to ensure a tight bond between the first and second phase concrete but also to cope with the upward pull-out force on the second-phase concrete under the foundation load. Therefore, the reserved second-phase concrete holes are usually designed with an inverted conical structure (larger at the bottom and smaller at the top). While this structure effectively resists upward pull-out forces, the reduced opening at the top further increases the difficulty of removing the formwork inside the hole.

[0004] Therefore, it is of great significance to design a generator foundation structure that has anti-uplift capability and can be built without dismantling the formwork. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and provide a generator foundation structure with anti-uplift capability and without the need to dismantle the formwork. The generator foundation structure should have the function of resisting the uplift force of concrete and have the characteristics of simple structure and convenient use.

[0006] The technical solution of this utility model is:

[0007] A generator foundation structure with anti-uplift capability and no need to dismantle the formwork includes a lower frame foundation embedded part and a stator foundation embedded part embedded in concrete, characterized in that: the lower frame foundation embedded part and the stator foundation embedded part are embedded in concrete through bushings with external protrusions.

[0008] The bushing includes a base plate and side plates welded together; the bushing is a vertically arranged rectangular body with an open top, and the four side plates are connected in sequence to form the side walls around the bushing, and the base plate forms the bottom surface of the rectangular body; each side plate is provided with several external protrusions arranged in sequence in the vertical direction and having the same structure, and the bottom of each external protrusion protrudes outward from the bushing.

[0009] The plane formed by the four sides of the groove and the bottom of the groove are both quadrilaterals, while the four inclined walls between the four side plates and the bottom plate are all trapezoids.

[0010] The included angle α between the two corresponding inclined walls of the external convex groove is 50° to 70°.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses a bushing with an external protruding groove, which can directly replace the traditional formwork in small spaces. This design eliminates the cumbersome procedures of installing, fixing, and post-processing the formwork in narrow spaces, not only reducing the operational difficulty during construction but also improving installation and construction efficiency.

[0013] 2. The outward-facing grooves on the bushing allow for a tighter bond with the secondary concrete, effectively resisting the uplift force exerted on the concrete by the foundation load. This robust connection enhances the load-bearing capacity and deformation resistance of the generator foundation structure, ensuring the long-term safe and reliable operation of the generator foundation. Attached Figure Description

[0014] Figure 1 This is a plan view of the generator foundation according to an embodiment of the present utility model.

[0015] Figure 2 yes Figure 1 AA enlarged cross-sectional view in the image.

[0016] Figure 3 This is a schematic diagram of the main structure of the bushing according to an embodiment of the present invention.

[0017] Figure 4 This is a top view of the bushing structure according to an embodiment of the present invention.

[0018] Figure label:

[0019] 1. Embedded parts for the lower frame foundation; 2. Embedded parts for the stator foundation; 3. Bushing; 3.1. Side plate; 3.2. Outer protrusion groove; 3.3. Inclined wall; 3.4. Base plate; 4. First-stage concrete; 5. Second-stage concrete; 6. Second-stage generator foundation hole. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0021] like Figures 1-4 As shown, a generator foundation structure with anti-uplift capability and requiring no formwork removal includes a lower frame foundation embedded part 1, a stator foundation embedded part 2, and a bushing 3. The lower frame foundation embedded part and the stator foundation embedded part are embedded in concrete through the bushing.

[0022] like Figure 3 and Figure 4 As shown, the bushing includes side plates 3.1 and a bottom plate 3.4. The bushing forms a vertically arranged rectangular body with an upward opening through the four side plates and the bottom plate. The four side plates are connected in sequence to form the four side walls of the rectangular body, and the bottom edge of the bottom plate is welded to the bottom edge of the four side plates to form the bottom surface of the rectangular body.

[0023] The side plate is provided with several vertically arranged and structurally identical protruding grooves 3.2. The plane enclosed by the four sides of each protruding groove and the plane serving as the groove bottom are both horizontally arranged rectangles, and the groove bottom protrudes outward from the bushing, making the protruding groove form a truncated pyramid shape (i.e., the plane enclosed by the four sides of the groove and the groove bottom plane are both quadrilaterals, and the four inclined walls connecting the bottom edges of the four side plates to the bottom plate are all trapezoids). The included angle between two corresponding inclined walls 3.3 of the protruding groove is α, and the included angle between the inclined wall and the groove bottom plane is also α (α ranges from 50° to 70°, preferably 60°). The height of the protruding groove is d1, the distance between adjacent protruding grooves is d2, the distance from the top protruding groove to the bushing opening is d3, and the depth of the protruding groove is a. The specific values ​​are determined according to the uplift force generated by the load of the generator stator foundation and the lower frame foundation of different specifications. This structure increases the contact area between the side plate and the concrete by adding a truncated pyramidal (or rectangular) protruding groove to the side plate, thereby improving the friction between them and effectively counteracting the upward pull-out force generated by the concrete. The side plate can be formed by stamping, and all four side walls of the protruding groove form sealing surfaces; during the installation of the bushing, it can prevent concrete from entering the bushing, ensuring the smooth installation of subsequent embedded parts.

[0024] The length, width, and height of the bushing are L, B, and H, respectively. The specific parameters are determined based on the loads designed for the stator foundation embedded parts and the lower frame foundation embedded parts, as well as the uplift force generated by the foundation load on the concrete.

[0025] like Figure 1 As shown, the original generator foundation installation process generally adopts a two-stage concrete pouring method. When the first-stage concrete 4 is poured, the second-stage generator foundation hole 6 is reserved. The stator foundation embedded parts and the lower frame foundation embedded parts are accurately positioned in the second-stage generator foundation hole before the second-stage concrete 5 is poured.

[0026] This invention involves pre-embedding a bushing 3 during the initial concrete pouring. After the initial concrete pouring is completed, the stator foundation and lower frame foundation of the generator foundation can be directly installed inside the bushing. Subsequently, the second phase of concrete is poured inside the bushing to fix the stator foundation and lower frame foundation, completing the generator foundation installation. The outward protrusions on the bushing ensure a tight fit with the initial and second phase concrete to resist the upward pull force generated by the foundation load on the concrete. The bushing's non-removable design not only reduces the operational difficulty during construction but also improves installation efficiency.

[0027] The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

Claims

1. A generator foundation structure with anti-uplift capability and requiring no formwork removal, comprising a lower frame foundation embedded part (1) and a stator foundation embedded part (2) embedded in concrete, characterized in that: The lower frame foundation embedded parts and stator foundation embedded parts are embedded in concrete through bushings (3) with external protrusions (3.2); The bushing includes a base plate (3.4) and side plates (3.1) welded together; the bushing is a vertically arranged rectangular body with an open top, and the four side plates are connected in sequence to form the side walls around the bushing, and the base plate forms the bottom surface of the rectangular body; each side plate is provided with a plurality of external protrusions arranged in sequence in the vertical direction and having the same structure, and the bottom of each external protrusion protrudes outward from the bushing.

2. The generator foundation structure with anti-uplift capability and formwork that can be installed without dismantling, as described in claim 1, is characterized in that: The plane formed by the four sides of the groove and the bottom of the groove are both quadrilaterals, and the four inclined walls (3.3) between the four side plates and the bottom plate are all trapezoids.

3. A generator foundation structure with anti-uplift capability and requiring no formwork removal as described in claim 2, characterized in that: The included angle (α) between the two corresponding inclined walls (3.3) of the external convex groove is 50° to 70°.

Images