Modularized power equipment foundation and floor integrated structure

Abstract

The utility model provides a modularized electrical equipment foundation and floor integral structure, which is characterized in that an embedded part for mounting equipment is embedded in the upper part of a prefabricated buttress module, a top steel bar of the prefabricated buttress module is higher than the top surface of the prefabricated buttress module and forms a top surface steel bar mesh, and a steel bar grouting sleeve is embedded in the bottom corresponding to the position of each bottom plate reserved connecting joint bar; the upper part of the grouting sleeve is connected with a vertical steel bar in the prefabricated buttress module; the steel bar grouting sleeve is connected with the prefabricated buttress module and the foundation slab through grouting; the area between the adjacent prefabricated buttress modules is backfilled to form a backfilling area, a terrace cushion layer is poured on the upper side of the backfilling area, and a heavy-load terrace is poured on the upper side of the terrace cushion layer. According to the utility model, the generation of building terrace cracks is effectively avoided, the workload of steel bar engineering is simplified, the strength and deformation requirements of the equipment foundation are effectively ensured by adopting the steel bar sleeve grouting connection, and the standard design and production can be partially realized by adopting the prefabricated module.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil structure design of power transmission and transformation and power consumption engineering specialty - substation (converter station) - substation engineering, and particularly relates to a modular power equipment foundation and floor integral structure. Background Art

[0002] In previous substation and converter station projects, the indoor power equipment foundation and indoor building floor are generally two independent sub-projects, which are designed and constructed in stages. Considering the characteristics of large and unevenly distributed loads of indoor power equipment, its foundation generally adopts the form of "flat raft foundation + pier combination". The layout of the foundation piers needs to be determined according to the equipment process layout. Under normal circumstances, the equipment foundation piers have a relatively simple size, but a large number, and the layout is scattered and irregular. Since maintenance vehicles enter the indoor work during the operation and maintenance of the project, the indoor building floor generally adopts a double-layer bidirectional reinforced concrete load-bearing floor. After the equipment foundation is poured, expansion joints need to be left between the building floor and the equipment foundation piers during construction. Irregular cracks are easily generated on the surface of the building floor and between the building floor and the equipment foundation piers. At the same time, for equipment foundation piers with smaller plane dimensions, the steel bars of the building floor need to be cut off near the foundation, which increases the workload of the steel bar engineering and the difficulty of construction in this area, which is not conducive to speeding up the construction period. Conventional foundation construction all uses wet operations of on-site pouring, with a complex construction process and a long cycle, which cannot meet green construction standards. Utility Model Content

[0003] The utility model aims to solve the above-mentioned technical problems, thereby providing a modular power equipment foundation and floor integral structure, which effectively integrates the indoor power equipment foundation with the indoor building floor, and adopts a modular process of connecting prefabricated components by grouting steel sleeves, which conforms to the construction concept of green construction, reduces the difficulty of operation, improves construction efficiency, and avoids the generation of cracks between the foundation and the floor, and has strong practicality.

[0004] In order to achieve the above-mentioned utility model object, the utility model provides a modular power equipment foundation and floor integral structure, including a cast-in-place foundation bottom plate and bottom plate cushion layer with reserved connection dowel bars, a prefabricated pier module, a steel bar grouting sleeve, a heavy-load floor, embedded parts, an adjustment pad, and a floor cushion layer;

[0005] The plane size and thickness of the foundation bottom plate are determined according to the equipment load and foundation bearing capacity. Connecting dowels exposed on the top surface are reserved at the place where the equipment foundation pier is arranged in the process. The anchorage length of the connecting dowels in the foundation bottom plate meets the design requirements. A plain concrete bottom plate cushion is set at the bottom of the foundation bottom plate.

[0006] The prefabricated pier module is prefabricated, and embedded parts for installing equipment are embedded in the upper part of the prefabricated pier module. A connecting rough surface is reserved on the top of the prefabricated pier module. The steel bars on the top of the prefabricated pier module are higher than the top surface of the prefabricated pier module and form a top surface steel mesh. A steel grouting sleeve is embedded in the position corresponding to each base plate reserved for connecting dowels at the bottom, and the upper part of the grouting sleeve is connected to the vertical steel bars in the prefabricated pier module; the steel grouting sleeve is connected to the prefabricated pier module and the foundation base plate by grouting; the area between adjacent prefabricated pier modules is backfilled to form a backfill area, and a floor cushion layer is poured on the upper side of the backfill area, and a heavy-load floor is poured on the upper side of the floor cushion layer.

[0007] Furthermore, one to four bottom keyways are arranged at the bottom of the prefabricated pier module, and the bottom keyways are evenly arranged according to the bottom size of the prefabricated pier module; the outer surface of the keyway is rough, the keyway depth is not less than 30 mm, and the two side surfaces of the bottom keyway are inclined surfaces with an inclination angle of no more than 30°.

[0008] Furthermore, an adjustment pad is arranged between the prefabricated pier module and the foundation bottom plate, the thickness of the joint between the prefabricated pier module and the cast-in-place foundation bottom plate is 18-22 mm, and the joint is filled with grouting material.

[0009] Furthermore, the heavy-load floor is a cast-in-place structure, and reinforcement is arranged according to the bearing capacity requirements of the floor. The length of the reinforcement extending into the top surface of the prefabricated pier module meets the relevant anchoring structure regulations, and reinforcement is arranged throughout the length of the smaller plane pier size.

[0010] Compared with conventional technologies, the beneficial effects of the present invention are:

[0011] The utility model integrates the indoor power equipment foundation with the indoor building floor, effectively avoiding the generation of irregular cracks on the building floor surface and between the building floor and the equipment foundation piers, preventing the hidden dangers of uneven ground force and reduced floor bearing capacity due to cracks, and improving the visual level; the steel bars of the heavy-loaded floor in the utility model do not need to be cut off near the foundation piers, which simplifies the steel bar engineering workload compared with the traditional solution, reduces the construction difficulty, greatly improves the construction efficiency, and is conducive to shortening the construction period.

[0012] The prefabricated pier module of the utility model can be prefabricated in the factory or in a reserved site, and can be carried out at the same time as the foundation slab is poured, which improves the construction flexibility and effectively speeds up the construction period, conforming to the prefabricated construction concept of modular construction and mechanized construction. For projects with indoor equipment foundation piers of single size, large number but irregular distribution, various prefabricated pier modules have strong versatility, industrialized production and high degree of standardization, which is conducive to the promotion and application in power engineering and reducing the project cost; in addition, the single unit weight of the prefabricated pier module is about 5 to 10 tons, and it can be hoisted by the same type of crane as the power equipment installation, without the need for special lifting equipment, and has high practicality and convenient installation. The use of prefabricated pier modules in the utility model can greatly reduce wet operations on the construction site, thereby effectively maintaining the cleanliness of the construction environment, ensuring construction order, saving resources, reducing negative impacts on the environment, and further improving the green construction level of power engineering.

[0013] The prefabricated pier module of the utility model is connected to the cast-in-place foundation slab by a steel sleeve grouting connection method. Compared with the traditional steel bar connection method, the steel sleeve grouting connection joint has better tensile strength, can better ensure the strength and deformation requirements of the equipment foundation, effectively ensure the safety and reliability of the basic structure of the power equipment, indirectly improve the stability of the power grid system and the reliability of power supply, and create favorable conditions for improving the service quality of power supply enterprises.

[0014] The steel sleeve grouting material of the utility model adopts a matching special slurry, which has good fluidity, early strength, high strength, micro expansion and other properties. After three days of curing, it can reach the compressive strength of ordinary grouting material for 28 days. The use of special slurry is conducive to speeding up the construction of subsequent processes, maximizing the use of construction period, and improving construction efficiency. It is particularly suitable for power projects with construction period restrictions, emergency nature and large-scale rapid construction requirements.

[0015] The utility model can partially realize standardized design and production, has very high economic, social and environmental benefits, is one of the development directions of basic design and construction of power engineering, and has promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a modularized power equipment foundation and floor integrated structure plan of the utility model;

[0017] Figure 2 This is an exploded view of a modular power equipment foundation and floor integrated structure of the utility model;

[0018] Figure 3 This is a schematic elevation diagram of a modular power equipment foundation and floor integrated structure (AA section view) of the utility model;

[0019] Figure 4 This is a detailed drawing of the grouting sleeve and bottom keyway of a modular power equipment foundation and floor integral structure prefabricated pier module of the utility model;

[0020] In the figure: 1—foundation slab; 2—connecting dowel bars; 3—slab cushion layer; 4—prefabricated pier module; 5—grouting sleeve; 6—vertical reinforcement; 7—top surface reinforcement mesh; 8—embedded parts; 9—connecting rough surface; 10—heavy-loaded floor; 11—heavy-loaded floor reinforcement; 12—grouting hole; 13—slurry outlet hole; 14—bottom surface keyway; 15—adjustment pad; 16—floor cushion layer. DETAILED DESCRIPTION

[0021] In order to better understand the purpose, structure and function of the utility model, the following Figure 1 -Attached Figure 4 And embodiments, a modular power equipment foundation and floor integrated structure of the utility model is further described in detail.

[0022] As attached Figure 1 To Attachment Figure 4 As shown, the utility model provides a novel modular integrated structure of power equipment foundation and floor, including a cast-in-place foundation base plate 1 and a base plate cushion layer 3 with reserved connecting dowels 2, a prefabricated pier module 4, a grouting sleeve 5 and a connecting joint, an embedded part 8, a heavy-load floor 10, an adjustment pad 15, and a floor cushion layer 16.

[0023] In the attached Figure 1 , Attachment Figure 2 In the illustrated embodiment, the position of the equipment foundation is determined according to the design drawings; after the foundation trench is excavated, the bottom is leveled and a 100mm thick plain concrete foundation cushion layer 3 is poured, each side of which is 100mm larger than the bottom plate size of the cast-in-place foundation bottom plate 1. After the cushion layer 3 is poured and has the corresponding bearing capacity, the cast-in-place foundation bottom plate 1 is poured. The plane size and thickness of the cast-in-place foundation bottom plate 1 are calculated and determined based on the equipment load and foundation bearing capacity, and its plane size should be able to support the entire equipment layout. The bottom plate with the top surface exposed is reserved at the place where the equipment foundation pier is arranged in the process. The anchoring method and length of the connecting dowel 2 in the foundation bottom plate meet the design requirements.

[0024] In the attached Figure 2In the illustrated embodiment, the prefabricated pier module 4 can be prefabricated in a factory or prefabricated in a reserved site. The casting material is the same concrete as the cast-in-place scheme. The upper part of the prefabricated pier module 4 is pre-buried with embedded parts 8 for installing equipment, and a connection rough surface 9 is reserved on the top. The top steel bars of the prefabricated pier module 4 are higher than the top surface of the prefabricated pier module and form a top steel mesh 7. The bottom corresponds to the position reserved for connecting dowels 2 of each bottom plate. The upper part of the grouting sleeve 5 is connected to the vertical steel bars 6 in the prefabricated pier module. One to four bottom keyways 14 are arranged at the bottom of the prefabricated pier module 4. The bottom keyways 14 are evenly arranged according to the bottom size of the prefabricated pier module 4. The surface of the bottom keyway 14 is provided with a rough surface. The depth of the bottom keyway 14 is not less than 30 mm. The two sides of the bottom keyway 14 are inclined surfaces with an inclination angle of not more than 30°.

[0025] After the cast-in-place foundation slab 1 reaches the design strength, clean the top surface of the cast-in-place foundation slab 1 and place concrete adjustment pads 15 at appropriate positions. Use the steel mesh 7 on the top surface of the prefabricated pier module as the lifting point to lift the prefabricated pier module 4, adjust and align the grouting sleeve 5 to the reserved connection dowel 2 on the bottom plate and then place it in place. Use the adjustment pads 15 to correct the elevation and verticality of the prefabricated pier module 4.

[0026] In the attached Figure 4 In the embodiment shown, after the position, elevation and levelness of the prefabricated pier module 4 are measured and corrected, the joints between the cast-in-place foundation slab 1 and the prefabricated pier module 4 are sealed, and the grouting operation of the steel sleeve grouting connection joint is performed. The grouting operation adopts the grouting method, and is injected from the grouting hole 12 on the lower side of the grouting sleeve 5. When the grouting material mixture overflows from the grouting hole 13 of the steel sleeve, the grouting is stopped and sealed in time.

[0027] When the compressive strength of the grouting material meets the requirements for subsequent equipment installation, the area between the prefabricated pier modules 4 can be backfilled and the floor cushion layer 16 can be poured. The floor cushion layer 16 is a plain concrete cushion layer with a thickness of 100 mm. After the concrete of the floor cushion layer 16 is initially set, the heavy-duty floor reinforcement 11 is tied; the length of the heavy-duty floor reinforcement 11 extending into the top surface of the prefabricated pier module 4 meets the relevant anchoring structure regulations and design requirements, and is set throughout the length of the plane pier with a smaller size. After the heavy-duty floor reinforcement 11 is tied and the concrete of the floor cushion layer 16 is finally set, the heavy-duty floor 10 is poured.

[0028] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. A modular power equipment foundation and floor integrated structure, characterized by: It comprises a cast-in-place foundation slab (1) with reserved connection dowel bars (2) and a slab cushion layer (3), a prefabricated pier module (4), a steel bar grouting sleeve (5), a heavy-loaded floor (10), embedded parts (8), an adjustment pad (15), and a floor cushion layer (16); The plane size and thickness of the foundation bottom plate are determined by calculating the equipment load and the bearing capacity of the foundation. A connecting dowel bar (2) exposed on the top surface is reserved at the place where the equipment foundation pier is arranged in the process. The anchorage length of the connecting dowel bar (2) in the foundation bottom plate (1) meets the design requirements. A plain concrete bottom plate cushion layer (3) is arranged at the bottom of the foundation bottom plate (1); The prefabricated pier module (4) is prefabricated, and an embedded part (8) for installing equipment is pre-embedded in the upper part of the prefabricated pier module (4). A connection rough surface (9) is reserved on the top of the prefabricated pier module (4). The steel bars on the top of the prefabricated pier module (4) are higher than the top surface of the prefabricated pier module and form a top surface steel bar mesh (7). A grouting sleeve (5) is pre-embedded at the bottom corresponding to the position of each base plate reserved for connecting dowel bars (2), and the upper part of the grouting sleeve (5) is connected to the vertical steel bars (6) in the prefabricated pier module; the steel bar grouting sleeve (5) is connected to the prefabricated pier module (4) and the foundation base plate (1) by grouting; the area between adjacent prefabricated pier modules (4) is backfilled to form a backfill area, a floor cushion layer (16) is poured on the upper side of the backfill area, and a heavy-load floor (10) is poured on the upper side of the floor cushion layer (16).

2. A modular power equipment foundation and floor integrated structure according to claim 1, characterized in that: The bottom of the prefabricated pier module is provided with one to four bottom keyways (14), and the bottom keyways (14) are evenly arranged according to the bottom size of the prefabricated pier module; the outer surface of the keyway is provided with a rough surface, the depth of the keyway is not less than 30 mm, and the two side surfaces of the bottom keyway (14) are inclined surfaces, and the inclination angle is not greater than 30°.

3. The modular power equipment foundation and floor integrated structure according to claim 1, characterized in that: An adjustment pad (15) is arranged between the prefabricated pier module (4) and the foundation bottom plate (1); the thickness of the joint between the prefabricated pier module and the cast-in-place foundation bottom plate is 18 to 22 mm, and the joint is filled with grouting material.

4. The modular power equipment foundation and floor integrated structure according to claim 1, characterized in that: The heavy-load floor (10) is a cast-in-place structure, and reinforcement is arranged according to the floor bearing capacity requirements. The length of the reinforcement extending into the top surface of the prefabricated pier module (4) meets the relevant anchoring structure regulations, and the reinforcement is arranged throughout the length of the plane pier with smaller dimensions.

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