Mountain area transformer substation filling-free building foundation structure

Abstract

The utility model discloses a filling-free building foundation structure for a transformer substation in a mountainous area. The filling-free building foundation structure comprises a frame column foundation, a frame column, a beam and slab structure, a building foundation and an equipment foundation, the frame column foundations are longitudinally and transversely arranged on the original natural slope, and the bottoms of the column foundations extend to a bearing stratum below the original natural slope; the frame columns are poured on the frame column foundations, the frame columns and the transverse main frame beams form transverse main frames, and the transverse main frames are arranged at the same interval in the longitudinal direction as the interval between a transformer substation outgoing line framework and a bus framework; the beam plate structure is poured at the top of the frame column; and the structure foundation, the equipment foundation and the beam-slab structure are integrally poured and formed. The frame column foundations, the frame columns, the beam and slab structures, the building foundations, the framework foundations and the equipment foundations form an integral foundation structure, and the foundation structure has the advantages of being good in integrity, high in anti-pulling and anti-overturning capacity and relatively uniform in settlement, greatly reducing the earth cutting and backfilling amount, and omitting filling slope supporting structures, building foundations and foundation treatment.

Description

Technical Field

[0001] The utility model relates to a filling-free building foundation structure of a transformer substation in a mountainous area, belonging to the technical field of structural design of transformer substations in mountainous areas. Background Art

[0002] With the development of industry, agriculture and urbanization, construction land is becoming increasingly scarce. The construction conditions of substations in mountainous areas dominated by plateaus and mountains are getting worse and worse. Due to the large height difference of the original terrain, the substation site is often flattened with large excavation and filling, large earthwork volume and high excavation and filling slopes.

[0003] like Figures 1 to 3 As shown in the figure, in the traditional design method, the site leveling of the mountain substation adopts on-site balance of earth and stone, and the earth and stone excavated from the excavation area is used to fill the fill area. The slope of the fill area adopts natural slope reduction or retaining wall support. When natural slope reduction is adopted, in order to ensure the stability of the fill slope, it is necessary to adopt a suitable slope reduction coefficient according to the nature of the fill. Therefore, the fill slope requires a large amount of fill and occupies a large land area; when retaining wall support is adopted, the retaining wall engineering volume is large, and when the fill is high, reinforced concrete retaining walls are often required. In order to avoid the influence of uneven settlement of the fill area and ensure the safe and stable operation of the substation equipment, the main structures in the fill area (such as the outgoing line frame, busbar frame, and equipment bracket) are treated with pile foundations or ultra-deep replacement. Since the earthwork backfill construction is affected by many factors such as filler type, particle size, gradation, moisture content, weather during construction, etc., the quality of earthwork backfill is difficult to meet the design requirements. Quality problems such as uneven settlement of the filling area, cable trench breakage, cracking of the station road surface, uneven settlement of the wall, slope collapse or tilt of the retaining wall often occur. Therefore, the traditional design of the substation filling area occupies a large area, has a large amount of work, a high cost, poor quality controllability, and poor environmental benefits. It is necessary to study and improve this.

[0004] In the construction of mountain substations, in order to minimize the transformation of the original terrain and reduce the damage to the mountains, vegetation and hydrology, it is necessary to maximize the use of the terrain - respect the terrain, follow the terrain, retain the original mountain terrain to the greatest extent, minimize the transformation of the original site, reduce earthwork excavation and filling, achieve local on-site balance of earthwork, save land resources, protect the ecological environment, reduce the foundation treatment costs in the filling area, effectively enhance the controllability of investment and construction quality, achieve better economic, social and environmental benefits, and create a high-quality substation construction project with mountain characteristics. Utility Model Content

[0005] Based on the above, the utility model provides a fill-free foundation structure of a substation in a mountainous area to overcome the deficiencies of the prior art.

[0006] The technical solution of the utility model is: a filling-free structure foundation structure of a mountain substation, including a frame column foundation, a frame column, a beam-slab structure, a structure foundation and an equipment foundation;

[0007] The frame column foundations are arranged vertically and horizontally on the original natural slope, and the bottom of the column foundations extends to the bearing layer below the original natural slope;

[0008] The frame columns are cast on the frame column foundation, and the frame columns and the transverse main frame beams of the beam-slab structure form a transverse main frame, and the longitudinal spacing of the transverse main frame is set to be the same as the spacing of the transformer substation outgoing line frame and the busbar frame;

[0009] The beam-slab structure is cast on the top of the frame column;

[0010] The structure foundation and the equipment foundation are integrally cast with the beam-slab structure.

[0011] In one example, the beam-slab structure includes a transverse main frame beam, a longitudinal frame beam and a beam-slab, the transverse main frame beam and the longitudinal frame beam are cast on the frame columns, and the slab is cast on the transverse main frame beam and the longitudinal frame beam.

[0012] In one example, secondary beams are cast between the longitudinal frame beams.

[0013] In one example, the structure foundation is arranged on the transverse main frame beam, and the equipment foundation is arranged on the beam plate between the transverse main frame beams.

[0014] In one example, the structure foundation includes an outgoing line frame foundation and a busbar frame foundation, and the equipment foundation includes an equipment bracket foundation.

[0015] In one example, a grid is provided on the outer facade of the frame column, and climbing plants are attached to the grid.

[0016] Beneficial effects of the utility model: The utility model sets frame column foundations and frame columns in horizontal and vertical rows on the mountain slope of the substation to be built, casts beam-slab structures on the frame columns, and casts the structure foundation, frame foundation and equipment foundation in one piece, sets the frame foundation on the transverse main frame beam, and sets the equipment foundation on the beam slab between the transverse main frame beams, so that multiple frame column foundations, frame columns, beam-slab structures, structure foundations, frame foundations and equipment foundations form an integral foundation structure, which has good integrity, anti-pulling and anti-overturning capabilities The advantages of strong and relatively uniform settlement; in addition, compared with the traditional excavation and backfilling method, this foundation structure adopts a joint structure method without filling in the original filling area. At this time, the original filling area can present the original topography and landform, and there is no need to level the site to the substation equipment site elevation, and the filling of earth and stone in the filling area is eliminated. The amount of excavation and filling of earth and stone is greatly reduced, and the filling slope support structure, structure foundation and foundation treatment, and the foundation and foundation treatment of ancillary facilities such as walls, cable trenches, and station area roads are eliminated, which greatly saves the project cost. If necessary, the overhead area can be used as a material storage warehouse, which increases the economic benefits to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The site and foundation structure plan of the filling area of ​​the mountain substation using the traditional design method;

[0018] Figure 2 The cross-section diagram of the filling area and foundation structure of the substation in the mountainous area using the traditional design method;

[0019] Figure 3 for Figure 2 A magnified schematic diagram of the middle fill area;

[0020] Figure 4 Plan of foundation structure for mountain substation without filling;

[0021] Figure 5 This is an enlarged cross-section of the fill-free area of ​​a mountain substation;

[0022] Figure 6 Provide a basic drawing of the outgoing line structure;

[0023] Figure 7 It is the basic drawing of busbar frame;

[0024] Figure 8 It is the large-scale drawing of the equipment support foundation;

[0025] Description of reference numerals:

[0026] 1 frame column foundation, 2 frame column, 3 beam-slab structure, 31 transverse main frame beam, 32 longitudinal frame beam, 33 beam-slab, 34 longitudinal secondary beam, 4 outgoing line frame foundation, 5 busbar frame foundation, 6 equipment bracket foundation, 7 inter-layer frame beam, 8 equipment bracket, 9 outgoing line frame, 10 busbar frame. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0028] See also Figures 4 to 8 The present embodiment provides a fill-free foundation structure of a mountain substation, including a frame column foundation 1, a frame column 2, a beam-slab structure 3, a structure foundation and an equipment foundation.

[0029] The frame column foundation 1 is arranged in a longitudinal and transverse manner on the original natural slope, and the bottom of the frame column foundation 1 extends to the bearing layer below the original natural slope. The frame column 2 is cast on the frame column foundation 1, and the frame column 2 includes a transverse main frame column 2 and a longitudinal main frame column 2, wherein the transverse main frame column 2 is perpendicular to the slope contour line direction, and the longitudinal main frame column 2 is arranged in the slope contour line direction. The frame column 2 and the transverse main frame beam 31 of the beam-slab structure 3 form a transverse main frame, and the longitudinal spacing of the transverse main frame is set to be the same as the spacing of the substation outgoing line frame 9 and the busbar frame 10. The beam-slab structure 3 is cast on the top of the frame column 2. The beam-slab structure 3 includes a transverse main frame beam 31, a longitudinal frame beam 32, a secondary beam 34 and a beam-slab 33. The transverse main frame beam 31 and the longitudinal frame beam 32 are cast on the frame column 2. The slab is cast on the transverse main frame beam 31, the longitudinal frame beam 32 and the secondary beam 34. A plurality of secondary beams 34 are cast between the longitudinal frame beams 32. Both ends of the secondary beams 34 are supported on the transverse main frame beam 31 to ensure the force requirements. When the frame column 2 on the lower side of the slope is higher, an interlayer frame beam 7 can also be set. The structure foundation and the equipment foundation are cast and formed integrally with the beam-slab structure 3. Specifically, the structure foundation includes the outgoing line frame foundation 4 and the busbar frame foundation 5, and the foundation cups thereof are cast on the transverse main frame beam 31. The equipment foundation includes the equipment bracket foundation 6, and the foundation cups thereof are cast on the longitudinal secondary beam 34 on the beam-slab 33 between the transverse main frame beams 31.

[0030] Furthermore, a small retaining wall can be set between appropriate adjacent frame columns 2 near the upper part of the slope. The top of the retaining wall is the fill area, that is, the excavated soil is backfilled, and the bottom of the retaining wall is the fill-free area of ​​the utility model. The small retaining wall can also be eliminated, and the slope can be naturally reduced at a slope rate of about 1:2. The small side slope formed by the reduction is located in the fill-free area of ​​the utility model, and the land area is not occupied repeatedly.

[0031] Furthermore, a grid is provided on the outer facade of the frame column 2, and climbing green plants are attached to the grid. The climbing green plants are planted around the frame column 2, so that the substation can be better integrated into the surrounding environment.

[0032] The working principle of the foundation structure of the above-mentioned mountain substation without filling is as follows:

[0033] The utility model sets frame column foundations 1 and frame columns 2 in horizontal and vertical rows on the mountain slope of the substation to be built, casts a beam-slab structure 3 on the frame column 2, and casts the structure foundation and the equipment foundation in one piece, sets the structure foundation on the transverse main frame beam 31, and sets the equipment foundation on the beam slab 33 between the transverse main frame beams 31, so that the plurality of frame column foundations 1, frame columns 2, beam-slab structures 3, structure foundations and equipment foundations form an integral foundation structure, which has good integrity, strong anti-pulling and anti-overturning capabilities, and low sinking. The advantage of relatively uniform reduction is that the foundation structure is relatively uniform compared with the traditional excavation and backfilling method. In addition, compared with the traditional excavation and backfilling method, the original backfill area adopts a backfill-free combined structure method. At this time, the original backfill area can present the original topography and landform, and there is no need to level the site to the substation equipment site elevation, which eliminates the need for earthwork filling in the backfill area, greatly reduces the amount of excavation and backfilling, and eliminates the need for backfill slope support structures, structure foundations and ground treatment, as well as the foundations and ground treatment of ancillary facilities such as walls, cable trenches, and station area roads, which greatly saves the project cost. If necessary, the overhead area can be used as a material storage warehouse, which increases the economic benefits to a certain extent. In the utility model, the outgoing line frame 9 and the busbar frame 10 are relatively large in load, and by being arranged on the transverse main frame beam 31, they can meet the requirements of the frame foundation for bearing capacity, pull-out resistance and overturning resistance; the equipment bracket 8 is relatively small in load, and is arranged above the beam plate 33, which can also meet the requirements.

[0034] The utility model is a multifunctional combined structure for site leveling and filling in deep filling areas of transformer substations, filling slope support structures, building foundations and ground treatment, as well as foundations and ground treatment of ancillary facilities such as walls, cable trenches, and station area roads, which can replace traditional design methods.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A fill-free foundation structure for a mountain substation, characterized in that: It includes a frame column foundation (1), a frame column (2), a beam-slab structure (3), a structure foundation and an equipment foundation; The frame column foundations (1) are arranged vertically and horizontally on the original natural slope, and the bottom of the frame column foundations (1) extends to the bearing layer below the original natural slope; The frame columns (2) are cast on the frame column foundation (1); the frame columns (2) and the transverse main frame beams (31) of the beam-slab structure (3) form a transverse main frame; the longitudinal spacing of the transverse main frame is set to be the same as the spacing of the transformer substation outgoing line frame (9) and the busbar frame (10); The beam-slab structure (3) is cast on the top of the frame column (2); The structure foundation and the equipment foundation are integrally cast with the beam-slab structure (3).

2. The fill-free foundation structure of a mountain substation according to claim 1 is characterized in that: The beam-slab structure (3) comprises a transverse main frame beam (31), a longitudinal frame beam (32) and a beam-slab (33); the transverse main frame beam (31) and the longitudinal frame beam (32) are cast on the frame column (2); and the beam-slab (33) is cast on the transverse main frame beam (31) and the longitudinal frame beam (32).

3. The fill-free foundation structure of a mountain substation according to claim 2 is characterized in that: Secondary beams (34) are cast between the longitudinal frame beams (32).

4. The fill-free foundation structure of a mountain substation according to claim 2 is characterized in that: The structure foundation is arranged on the transverse main frame beam (31), and the equipment foundation is arranged on the beam plate (33) between the transverse main frame beams (31).

5. The fill-free foundation structure of a mountain substation according to claim 4 is characterized in that: The structure foundation comprises an outgoing line frame foundation (4) and a busbar frame foundation (5), and the equipment foundation comprises an equipment bracket foundation (6).

6. The fill-free foundation structure of a mountain substation according to claim 1 is characterized in that: A grid is provided on the outer facade of the frame column (2), and climbing green plants are attached to the grid.

Images