Installation foundation for an overhead embedded GIS device

Abstract

The present invention discloses an installation foundation for an overhead embedded GIS device. The cross beam is embedded in the embedded part layer along the direction of the GIS device and is higher than the ground according to the requirements of the electrical specialty. After the equipment provides the required information, the specific position of the longitudinal beam is determined and welded to the cross beam, and then lightweight concrete is poured to form a concrete surface layer. The height of the support column can be adjusted according to the height of the concrete surface layer, and the engineering adaptability is strong. When the height of the soil surface layer still needs to be increased according to the engineering requirements, the increase in steel is less. The openings in the honeycomb beam can allow the steel bars and pipelines of the lightweight concrete surface layer to pass through. The processes such as structural design, floor concrete construction pouring and curing do not need to wait for the construction drawing data of the equipment manufacturer. After the subsequent GIS manufacturer determines the embedded parts required by the equipment, the honeycomb beam is welded to the overhead embedded parts (i.e., the cross beam), which can effectively reduce the erection period of the substation. This solution is safe, reliable, economical and efficient in construction.

Description

Technical Field

[0001] The invention relates to an installation foundation for overhead embedded GIS equipment. Background Art

[0002] Due to the objective differences in the product technical solutions of various domestic GIS equipment suppliers, there is no unified, detailed, and available GIS equipment foundation embedded parts standard. The application effect of the GIS equipment foundation embedded parts in "General Equipment" is not ideal, which restricts the further improvement of the universal interchangeability of GIS equipment. Therefore, accelerating the research and formation of a unified and standard GIS equipment foundation embedded parts solution is a necessary condition for continuously promoting the modular construction level of substations. The current shortcomings of the GIS equipment embedded parts solution are:

[0003] 1. It takes at least 5-8 months from the finalization of the preliminary design plan to the construction of the GIS equipment foundation and embedded parts by the construction unit. The construction progress of the foundation embedded parts of the GIS equipment largely restricts the efficiency of the project construction.

[0004] 2. For indoor substations, the embedded parts of the Yuanjing equipment foundation are all constructed in one go, so the same type of equipment needs to be purchased when Yuanjing is expanded. Due to the limitation of the model, the conventional bidding form cannot be used, and the procurement cost cannot be effectively controlled.

[0005] 3. Currently, the embedded parts of the equipment foundation are cast at one time, which places extremely high demands on the positioning of the embedded parts. Factors such as construction errors often affect the later lifting of the equipment, and even cause safety hazards to the safe operation of GIS equipment.

[0006] 4. With the development of electrical equipment in substations, the depth of cable trenches required by electrical professionals has gradually deepened, resulting in the height of the lightweight concrete surface layer above the structural layer of the GIS room being raised. During the current construction of substations, the secondary poured concrete surface layer is generally greater than 300mm. Due to the thick surface layer, the lightweight concrete surface steel mesh, cables, pipelines, etc. cannot pass through the horizontal embedded parts, which brings inconvenience to the on-site construction. During on-site construction, the steel mesh is generally cut off at the obstruction of the horizontal embedded parts, which reduces the crack resistance of the lightweight concrete surface layer. After the substation is put into operation for a long time, the lightweight concrete surface layer will crack, which brings safety hazards to operation and maintenance. Summary of the invention

[0007] The present invention provides an installation foundation for overhead embedded GIS equipment in order to solve the problems existing in the above-mentioned prior art.

[0008] The technical solutions adopted in the present invention are:

[0009] An installation foundation for an overhead embedded GIS device, comprising a cross beam, support columns, punching shear-resistant plates, profiled steel sheets, longitudinal beams, an embedded part layer and a soil surface layer. A number of support columns are welded to the cross beam in parallel and at a certain interval. Two cross beams are supported on the profiled steel sheets through the corresponding support columns. A punching shear-resistant plate is connected to each support column. The profiled steel sheets and all the punching shear-resistant plates are embedded in the embedded part layer, and the cross beam extends outside the embedded part layer. A number of longitudinal beams are arranged on the two cross beams in parallel according to the installation dimensions of the GIS device, and the two ends of the longitudinal beams are correspondingly welded to the two cross beams. A number of installation holes for arranging steel bars or pipelines are provided on each longitudinal beam. The installation holes at at least one corresponding position on all the longitudinal beams are coaxially arranged. The cross beam and the longitudinal beams are both placed in the soil surface layer.

[0010] Further, both the embedded part layer and the soil surface layer are formed by casting concrete.

[0011] Further, the top surface of the longitudinal beam is higher than the top surface of the soil surface layer or flush with the top surface of the soil surface layer.

[0012] Further, the cross beam is spliced by a number of rectangular plate bodies. There is an assembly joint between adjacent plate bodies. A number of support columns are welded to the bottom surface of each plate body.

[0013] Further, the length of the plate body is 1 m or 1.5 m.

[0014] Further, reinforcing ribs are provided on the bottom surface of the plate body.

[0015] Further, a support plate is provided on the bottom surface of the support column. The support plate is supported on the profiled steel sheet.

[0016] Further, both the punching shear-resistant plate and the support plate are of rectangular plate structure, and the area of the punching shear-resistant plate is larger than the area of the support plate.

[0017] Further, the support column and the longitudinal beam are of I-beam structure, and a number of reinforcing ribs are provided on the side surface of the longitudinal beam.

[0018] Further, the installation hole is of regular polygon structure.

[0019] The cross beam is embedded in the embedded part layer along the direction of the GIS equipment, and the cross beam is higher than the ground according to the requirements of the electrical specialty. After the equipment provides the information, determine the specific position of the longitudinal beam and weld it to the cross beam, and then pour lightweight concrete to form the concrete surface layer. The beneficial effects generated thereby are as follows: the height of the support column can be adjusted according to the height of the concrete surface layer, and the engineering adaptability is strong. When the height of the soil surface layer still needs to be increased according to the engineering requirements, the increase in steel is less. The openings of the cellular beam can allow the steel bars and pipelines of the lightweight concrete surface layer to pass through. The processes such as structural design, floor concrete construction pouring and curing do not need to wait for the construction drawing data of the equipment manufacturer. After the subsequent GIS manufacturer determines the embedded parts required by the equipment, weld the cellular beam to the overhead embedded parts (i.e., the cross beam), which can effectively reduce the erection period of the substation. This scheme is safe, reliable, economical and simple and efficient in construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is a layout structure diagram among the cross beam, profiled steel sheet and longitudinal beam in the present invention.

[0021] FIG. 2 is a structure diagram of the support column and punching shear resistant plate on the embedded part layer in the present invention.

[0022] FIG. 3 is a structure diagram of the GIS equipment on the installation foundation in the present invention.

[0023] FIG. 4 is a partial enlarged view of the present invention.

[0024] FIG. 5 is a structure diagram of the longitudinal beam in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] As Figures 1 to 5 , an installation foundation of an overhead embedded part type GIS equipment of the present invention includes a cross beam 11, a support column 12, a punching shear resistant plate 13, a longitudinal beam 31, an embedded part layer 10, a soil surface layer 20 and a profiled steel sheet 2 having a front surface and a valley surface.

[0027] A plurality of support columns 12 are welded to the cross beam 11 in parallel and at a certain interval. Two cross beams 11 are supported on the profiled steel sheet 2 through the corresponding support columns 12. A punching shear resistant plate 13 is connected to each support column 12. The profiled steel sheet 2 and all the punching shear resistant plates 13 are embedded in the embedded part layer 10, and the cross beam 11 extends outside the embedded part layer 10.

[0028] Several longitudinal beams 31 are arranged parallel to each other on the two transverse beams 11 according to the installation size of the GIS equipment, and the two ends of the longitudinal beams 31 are welded to the two transverse beams 11. Each longitudinal beam 31 is provided with several mounting holes 30 for arranging steel bars or pipelines. The mounting holes 30 are regular polygonal structures, and the mounting holes 30 facilitate the passage of steel bars, pipelines, etc. through the longitudinal beams 31. The mounting holes 30 facilitate the arrangement of steel bars or pipelines on the one hand, and play a role in weight reduction on the other hand. The mounting holes 30 at at least one corresponding position on all longitudinal beams 31 are coaxially arranged, and the transverse beams 11 and longitudinal beams 31 are placed in the soil surface layer 20.

[0029] The embedded layer 10 and the soil surface layer 20 in the present invention are both cast with concrete. The construction process of the embedded layer 10 does not require electrical equipment data, and since the cross beam 11 is designed in a strip shape, it can cover all possible locations where the longitudinal beam 31 may be buried.

[0030] The top surface of the longitudinal beam 31 is higher than the top surface of the soil surface layer or flush with the top surface of the soil surface layer, which facilitates the installation of the GIS equipment. The GIS equipment can be welded or fixedly connected to the longitudinal beam 31 by screws.

[0031] The crossbeam 11 is formed by splicing a plurality of rectangular plates 111, with a splicing seam between adjacent plates 111, and a plurality of support columns 12 are welded on the bottom surface of each plate 111. The length of the plate 111 is 1m or 1.5m in two standard lengths, which is convenient for modular production.

[0032] The support column 12 and the longitudinal beam 31 in the present invention are I-beam structures, and a plurality of reinforcing ribs 33 are provided on the side of the longitudinal beam 31. In order to increase the strength of the cross beam 11, reinforcing ribs are provided on the bottom surface of the plate body 111.

[0033] The longitudinal beam 31 is a honeycomb beam structure, and a regular polygonal mounting hole 30 and a reinforcing rib 33 are arranged on the longitudinal beam 31. With the same amount of steel, the honeycomb beam has a reasonable cross-section, a high bearing capacity, and is convenient for steel bars, pipelines, etc. to pass through the holes.

[0034] In order to better support the support column 12 on the corrugated steel sheet 2 , a support plate 14 is provided on the bottom surface of the support column 12 , and the support plate 14 is supported on the front surface of the corrugated steel sheet 2 .

[0035] The anti-punching shear plate 13 and the support plate 14 are both rectangular plate structures, and an H-shaped groove is provided on the anti-punching shear plate 13. The area of ​​the anti-punching shear plate 13 is larger than the area of ​​the support plate 14. The support plate 14 plays a supporting role, and the anti-punching shear plate 13 is buried in the surface of the concrete structure layer. The anti-punching shear plate 13 can increase the anti-punching shear area and improve the bearing capacity of the steel foundation, and is suitable for the installation and fixation of large equipment on the composite floor and concrete floor.

[0036] During the construction of the present invention, first, the cross beam 11 is constructed at the same time as the concrete floor of the substation, and is pre-buried in the reinforced concrete floor along the direction of the GIS equipment. At least two cross beams 11 are required for each GIS equipment interval. The length of each cross beam 11 is determined by the project needs and is composed of standard parts (plate body 111). The construction process does not require electrical equipment data. Since the strip plate is designed to be strip-shaped, it can cover all possible buried positions of the longitudinal beam 31.

[0037] Next, after the electrical equipment data is provided, the specific location of the GIS equipment is determined according to the installation requirements of the electrical equipment, and then the longitudinal beam 31 is welded to the strip plate. Finally, after the construction of auxiliary facilities such as the GIS indoor cable trench is completed, a lightweight concrete surface layer is poured on the embedded layer 10, and the height of the soil surface layer 20 is equal to or lower than the top surface of the longitudinal beam 31. The embedded construction is completed, and then the GIS equipment can be installed.

[0038] The present invention adopts a longitudinal beam 31 of a honeycomb beam structure, and the longitudinal beam 31 has an I-shaped cross-section and a strong bending resistance. The height of the support column 12 can be adjusted according to the height of the concrete surface layer, and has strong engineering adaptability. When the soil surface layer 20 still needs to be raised according to engineering needs, the increase in steel is small. The openings of the honeycomb beam can be used for lightweight concrete surface layer steel bars and pipelines to pass through. Structural design, floor slab concrete construction pouring and maintenance processes do not need to wait for the equipment manufacturer's construction drawings and materials. After the subsequent GIS manufacturer determines the embedded parts required for the equipment, the honeycomb beam is welded to the overhead embedded parts (i.e., the crossbeam 11), which can effectively reduce the substation erection period. This solution is safe and reliable, economical, and the construction is simple and efficient.

[0039] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. An installation foundation for an overhead embedded GIS device, characterized in that: It includes a cross beam (11), support columns (12), punching shear resistant plates (13), profiled steel sheets (2), longitudinal beams (31), an embedded part layer (10) and a soil surface layer (20). A number of support columns (12) are welded to the cross beam (11) in parallel and at a certain interval. Two cross beams (11) are supported on the profiled steel sheets (2) through corresponding support columns (12). One punching shear resistant plate (13) is connected to each support column (12). The profiled steel sheets (2) and all the punching shear resistant plates (13) are embedded in the embedded part layer (10), and the cross beam (11) extends outside the embedded part layer (10). A number of longitudinal beams (31) are arranged on the two cross beams (11) in parallel according to the installation dimensions of the GIS equipment, and the two ends of the longitudinal beams (31) are correspondingly welded to the two cross beams (11). A number of installation holes (30) for arranging steel bars or pipelines are provided on each longitudinal beam (31). The installation holes (30) at at least one corresponding position on all the longitudinal beams (31) are coaxially arranged. The cross beam (11) and the longitudinal beams (31) are both placed in the soil surface layer (20).

2. The installation foundation of the overhead embedded GIS device according to claim 1, characterized in that: Both the embedded part layer (10) and the soil surface layer (20) are formed by casting concrete.

3. The installation foundation of the overhead embedded GIS device according to claim 1, characterized in that: The top surface of the longitudinal beam (31) is higher than the top surface of the soil surface layer or is flush with the top surface of the soil surface layer.

4. The installation foundation of the overhead embedded GIS device according to claim 1, characterized in that: The cross beam (11) is formed by splicing a number of rectangular plate bodies (111). There is an assembly joint between adjacent plate bodies (111). A number of support columns (12) are welded to the bottom surface of each plate body (111).

5. The installation foundation of the overhead embedded GIS device according to claim 4, characterized in that: The length of the plate body (111) is 1 m or 1.5 m.

6. The installation foundation of the overhead embedded GIS device according to claim 4, characterized in that: Reinforcing ribs are provided on the bottom surface of the plate body (111).

7. The installation foundation of the overhead embedded GIS device according to claim 1, characterized in that: A support plate (14) is provided on the bottom surface of the support column (12), and the support plate (14) is supported on the profiled steel sheet (2).

8. The installation foundation of the overhead embedded GIS device according to claim 7, characterized in that: Both the punching shear resistant plate (13) and the support plate (14) are of rectangular plate structures, and the area of the punching shear resistant plate (13) is larger than the area of the support plate (14).

9. The installation foundation of the overhead embedded GIS device according to claim 1, characterized in that: The support column (12) and the longitudinal beam (31) are of I-beam structures, and a number of reinforcing ribs (33) are provided on the side surface of the longitudinal beam (31).

10. The installation foundation of the overhead embedded GIS device according to claim 1, characterized in that: The installation hole (30) is of a regular polygon structure.

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