A busbar bridge support and a cable double-gutter integrated foundation

Abstract

The present application provides a bus bridge support pedestal and a cable double-gutter integrated foundation, mainly including: a cylindrical short column, a support steel pipe pole, and a reinforced concrete pier; the cylindrical short column is arranged on the reinforced concrete pier, and the cylindrical short column serves as the base of the bus bridge support, and the support steel pipe pole is nested outside the cylindrical short column; the reinforced concrete pier is arranged on the wall of the cable double-gutter, and the reinforced concrete pier serves as a conversion member between the wall of the cable double-gutter and the base of the bus bridge support; a grounding plate is arranged on the support steel pipe pole, the support steel pipe pole is fixed on the cylindrical short column, and the diameter of the reinforced concrete pier is smaller than the diameter of the cable double-gutter cover plate; wherein, bolts penetrate through the support steel pipe pole and the cylindrical short column so that the support steel pipe pole, the cylindrical short column and the grounding plate are fixedly connected. Using the wall of the cable double-gutter as the support foundation of the bus bridge solves the problem that the distance between the distribution device room and the main transformer area of the substation is small and the bus bridge support cannot be arranged.

Description

Technical Field

[0001] This application relates to the technical field of substation construction, and particularly to an integrated foundation of a bus bridge support and a cable double trench. Background Art

[0002] A substation is an important part of a strong power grid. During the erection process, it is necessary to make overall arrangements for the buildings, pipelines, and roads in the substation area according to the requirements of production technology, transportation, fire prevention, explosion prevention, protection, and construction, etc., in accordance with the long-term scale to ensure smooth processes. The buildings arranged in the main transformer area of a 330 kV substation include an electrical combined building (switchgear room, station service room, etc.), main transformer structures, oil pits and firewalls, reactive power compensation equipment, bus bridge supports, cable trenches, fire protection pipelines, oil drainage pipelines, and rainwater inlets, etc. The bus bridge supports usually adopt equal-diameter steel pipe poles with a diameter of Ф300x6, and the support foundation adopts a cup foundation with a buried depth of about -1.5 m. The cable trench adopts a reinforced concrete structure, and the cable trench cover plate adopts a composite nested cover plate. In order to ensure the smooth drainage of the site, without changing the net depth of the cable trench, a water passing trough is usually set in the depth direction of the cable double trench every about 15 m along the length direction of the cable trench. The net depth of the water passing trough is the height of the cable trench cover plate above the site and the thickness of the gravel layer of the site.

[0003] If, on the premise of a determined project construction scale, restricted by factors such as land acquisition indicators, surrounding conditions of the site, and layout forms of distribution devices at each voltage level, the overall layout of the main transformer area is relatively compact, resulting in a small distance between the switchgear room and the main transformer area. This causes the cable double trench and the bus bridge support arranged between the switchgear room and the main transformer area to be restricted by the site, further exacerbating the layout difficulty of the cable double trench and the bus bridge foundation plane. Sometimes, under the condition of meeting the layout of the cable double trench, there is no condition for arranging the bus bridge support. Summary of the Invention

[0004] This application provides an integrated foundation of a bus bridge support and a cable double trench to solve the problem that the distance between the switchgear room and the main transformer area of the substation is small and the bus bridge support cannot be arranged.

[0005] The busbar bridge support base and the cable double-gutter integrated foundation provided by this application mainly include: a cylindrical short column, a support steel pipe pole, and a reinforced concrete pier; the cylindrical short column is arranged on the reinforced concrete pier, and the cylindrical short column serves as the base of the busbar bridge support, and the support steel pipe pole is nested outside the cylindrical short column; the reinforced concrete pier is arranged on the wall of the cable double-gutter, and the reinforced concrete pier serves as a conversion member between the wall of the cable double-gutter and the base of the busbar bridge support; a grounding plate is provided on the support steel pipe pole, the support steel pipe pole is fixed on the cylindrical short column, and the diameter of the reinforced concrete pier is smaller than the diameter of the cable double-gutter cover plate; wherein, bolts penetrate through the support steel pipe pole and the cylindrical short column so that the support steel pipe pole, the cylindrical short column and the grounding plate are fixedly connected.

[0006] In a possible implementation manner, the support steel pipe pole is fixed on the cylindrical short column through bolts, and a plurality of sleeves are provided on the cylindrical short column.

[0007] In a possible implementation manner, cement is injected into the connection gap between the support steel pipe pole and the cylindrical short column.

[0008] In a possible implementation manner, a first steel bar and a second steel bar are provided on the cylindrical short column, the first steel bar is a longitudinal steel bar, and the second steel bar is a stirrup.

[0009] In a possible implementation manner, the first steel bar and the second steel bar penetrate through the reinforced concrete pier and extend to the wall of the cable double-gutter.

[0010] In a possible implementation manner, a third steel bar and a fourth steel bar centered on the reinforced concrete pier are provided on the reinforced concrete pier.

[0011] In a possible implementation manner, the third steel bar is a circular steel bar, and the fourth steel bar is a radial steel bar.

[0012] In a possible implementation manner, the first steel bar, the second steel bar, the third steel bar and the fourth steel bar are connected as a whole.

[0013] In a possible implementation manner, bolt holes are provided on the grounding plate, the bolt holes are oval holes, and bolts penetrate through the support steel pipe pole and the cylindrical short column so that the support steel pipe pole, the cylindrical short column and the grounding plate are fixedly connected.

[0014] As can be seen from the above technical solutions, the present application provides a bus bridge support pedestal and a cable double-gutter integrated foundation, mainly including: a cylindrical short column, a support steel pipe pole, and a reinforced concrete pier; the cylindrical short column is arranged on the reinforced concrete pier, the cylindrical short column serves as the base of the bus bridge support, and the support steel pipe pole is nested outside the cylindrical short column; the reinforced concrete pier is arranged on the wall of the cable double-gutter, and the reinforced concrete pier serves as a conversion member between the wall of the cable double-gutter and the base of the bus bridge support; a grounding plate is provided on the support steel pipe pole, the support steel pipe pole is fixed on the cylindrical short column, and the diameter of the reinforced concrete pier is smaller than the diameter of the cable double-gutter cover plate; wherein, bolts penetrate through the support steel pipe pole and the cylindrical short column so that the support steel pipe pole, the cylindrical short column and the grounding plate are fixedly connected. The cylindrical short column is provided with a first steel bar and a second steel bar, the first steel bar is a longitudinal steel bar, and the second steel bar is a stirrup. The first steel bar and the second steel bar penetrate through the reinforced concrete pier and extend to the wall of the cable double-gutter. The reinforced concrete pier is provided with a third steel bar and a fourth steel bar centered on the reinforced concrete pier. The first steel bar and the second steel bar of the cylindrical short column penetrate through the pier and extend to the bottom of the cable trench wall. The third steel bar and the fourth steel bar are arranged inside the pier to enhance the strength, stiffness and stability of the short column, the pier and the cable trench wall, eliminate the overturning hidden danger of the bus bridge support, and improve the safety and reliability of the bus bridge support. It solves the problem that the distance between the distribution device room and the main transformer area in the substation is small and the bus bridge support cannot be arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a plan view of the integrated layout of the bus bridge support pedestal and the cable double-gutter according to an embodiment of the present application;

[0017] Figure 2 It is a sectional view taken along line A-A of the integrated bus bridge support pedestal and cable double-gutter according to an embodiment of the present application;

[0018] Figure 3 It is a sectional view taken along line B-B of the integrated bus bridge support pedestal and cable double-gutter according to an embodiment of the present application;

[0019] Figure 4 It is a sectional view taken along line C-C of the integrated bus bridge support pedestal and cable double-gutter according to an embodiment of the present application;

[0020] Figure 5D-D sectional view of the integrated busbar bridge support and cable double groove for an embodiment of this application;

[0021] Illustration description:

[0022] Among them, 1 - cylindrical short column, 2 - support steel pipe pole, 3 - earthing plate, 4 - reinforced concrete pier, 5 - first steel bar, 6 - second steel bar, 7 - third steel bar, 8 - fourth steel bar, 9 - cover plate. Specific implementation manners

[0023] The embodiments will be described in detail below, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following embodiments do not represent all the implementation manners consistent with this application. They are only examples of the systems and methods consistent with some aspects of this application detailed in the claims.

[0024] The substation is an important part of the strong power grid. During the erection process, it is necessary to make overall arrangements for the buildings, pipelines and roads in the station area according to the requirements of production technology, transportation, fire prevention, explosion prevention, protection and construction, etc., in accordance with the long-term scale to ensure smooth process flow. The determination of the substation layout plan needs to comprehensively consider factors such as the population density in the system landing area, the scale of the project construction, the outgoing line corridor, the land cost situation, the geological conditions, the site elevation difference, the seismic intensity, the altitude and the pollution, etc.

[0025] The buildings arranged in the main transformer area of the 330 kV substation include the electrical combined building (switchgear room, station service room, etc.), main transformer structure, oil pit and firewall, reactive power compensation equipment, busbar bridge support, cable double groove, fire protection pipeline, oil drainage pipeline and rainwater inlet, etc. The busbar bridge support usually adopts an equal-diameter steel pipe pole of Ф300x6, and the support foundation adopts a cup foundation with a buried depth of about -1.5 m. The cable double groove adopts a reinforced concrete structure, and the cable trench cover plate adopts a composite nested cover plate. In order to ensure the smooth drainage of the site, without changing the net depth of the cable trench, usually a water passing trough is set in the depth direction of the cable double groove every about 15 m along the length direction of the cable double groove. The net depth of the water passing trough is the height of the cable trench cover plate above the site combined with the thickness of the site gravel layer.

[0026] If, on the premise that the scale of project construction is determined, restricted by factors such as land acquisition indicators, surrounding conditions of the site, and layout forms of distribution devices at each voltage level, the overall layout of the main transformer area is relatively compact, resulting in a small distance between the distribution device room in the main transformer area and the main transformer area. This causes the specific positions of the cable double trench and the bus bridge support foundation arranged between the distribution device room and the main transformer area to be avoided and adjusted in combination with the foundation of adjacent buildings, further exacerbating the layout difficulty of the cable double trench and the bus bridge foundation plane. Sometimes, when the cable double trench layout is satisfied, there is no condition for arranging the bus bridge support foundation. Therefore, it is very meaningful and urgent to solve the problem that there is no arrangement condition for the bus bridge support foundation on the premise of satisfying the cable double trench layout in the main transformer area.

[0027] Therefore, to solve the above technical problems, the present application provides an integral foundation for the bus bridge support and the cable double trench to solve the problem that the distance between the distribution device room and the main transformer area of the substation is small and the bus bridge support cannot be arranged.

[0028] As Figure 1 shown, the integral foundation for the bus bridge support and the cable double trench provided by the present application mainly includes: a cylindrical short column 1, a support steel pipe pole 2, and a reinforced concrete pier 4; the cylindrical short column 1 is arranged on the reinforced concrete pier 4, and the cylindrical short column 1 serves as the base of the bus bridge support, and the support steel pipe pole 2 is nested outside the cylindrical short column 1; the reinforced concrete pier 4 is arranged on the wall of the cable double trench, and the reinforced concrete pier 4 serves as a conversion member between the wall of the cable double trench and the base of the bus bridge support; a grounding plate 3 is arranged on the support steel pipe pole 2, the support steel pipe pole 2 is fixed on the cylindrical short column 1, and the diameter of the reinforced concrete pier 4 is smaller than the diameter of the cable double trench cover; wherein, the support steel pipe pole 2, the cylindrical short column 1, and the grounding plate 3 are fixedly connected by bolts passing through the support steel pipe pole 2 and the cylindrical short column 1.

[0029] By setting a cylindrical short column 1 on the cover 9 of the cable double trench and sleeving the support steel pipe pole 2 outside the cylindrical short column 1, the cylindrical short column 1 can be used as the base of the bus bridge support to realize the erection of the bus bridge support.

[0030] To improve the stability of the busbar bridge support, a first steel bar 5 and a second steel bar 6 are provided on the cylindrical short column 1. The first steel bar 5 and the second steel bar 6 penetrate through the reinforced concrete pier 4 and extend to the wall of the cable double trench. In some embodiments, the first steel bar 5 is a longitudinal steel bar, and the second steel bar 6 is a stirrup. A third steel bar 7 and a fourth steel bar 8 centered on the reinforced concrete pier 4 are provided on the reinforced concrete pier 4. In some embodiments, the third steel bar 7 is a circular steel bar, and the fourth steel bar 8 is a radial steel bar. The first steel bar 5, the second steel bar 6, the third steel bar 7, and the fourth steel bar 8 are connected as a whole.

[0031] By extending the longitudinal steel bar of the cylindrical short column 1, i.e., the first steel bar 5, and the stirrup, i.e., the second steel bar 6, through the reinforced concrete pier 4 to the bottom of the cable trench wall, the cylindrical short column 1, the reinforced concrete pier 4, and the cable trench wall are connected as a whole, solving the connection problem between the support steel pipe pole 2 and the circular reinforced concrete pier 4.

[0032] In some embodiments, the diameter of the reinforced concrete pier 4 is determined by the requirements for the embedded cable trench cover plate. A circular steel bar and a radial steel bar centered on the center of the reinforced concrete pier 4 are arranged at regular intervals in the depth and diameter directions of the reinforced concrete pier 4. The circular steel bar and the radial steel bar are connected as a whole with the longitudinal steel bar and the stirrup of the pier, and the force transmission path is simple, ensuring the coordinated working stress of the steel bar and the concrete pier.

[0033] To stably connect the support steel pipe pole 2 with the grounding plate 3, a plurality of sleeves are provided on the cylindrical short column 1, and bolt holes are formed on the grounding plate 3. The bolt holes are oval holes. In some embodiments, 2 sleeves with a diameter of Ф21 are reserved in the reinforced concrete cylindrical short column 1, and oval holes are formed at the positions of the bolt holes of the grounding plate 3 on the support steel pipe pole 2 for the M14 grounding plate bolts to pass through the support steel pipe pole 2 and the reinforced concrete cylindrical short column 1. By using the pulling effect of the bolts, the support steel pipe pole 2, the reinforced concrete cylindrical short column 1, and the grounding plate 3 are reliably connected.

[0034] This application effectively improves the overall stability of the connection between the support steel pipe pole 2 and the reinforced concrete cylindrical short column 1 by setting bolts and adopting the method of high-pressure cement grouting; extending the longitudinal stress steel bar and the stirrup of the cylindrical short column 1 through the pier to the bottom of the cable trench wall, and arranging circular steel bars and radial steel bars inside the reinforced concrete pier 4, enhancing the strength, stiffness, and stability of the cylindrical short column 1, the reinforced concrete pier 4, and the cable trench wall, eliminating the overturning hidden danger of the busbar bridge support, and improving the safety and reliability of the integration of the busbar bridge support support and the cable double trench.

[0035] As Figures 1 to 5As shown in the figure, it is a plan view of the integrated layout of the busbar bridge support and the cable double trench provided by this embodiment. The cable double trench wall is used as the support foundation of the busbar bridge. Above the cover plate 9, a Ф276 reinforced concrete cylindrical short column 1 is set, and the support steel pipe rod 2 is sleeved outside the reinforced concrete cylindrical short column 1. An enlarged circular reinforced concrete column pier 4 is made within the depth range of the cable trench water passing trough, serving as a conversion member between the cable trench wall and the base of the support steel pipe rod. Two Ф21 sleeves are reserved on the reinforced concrete cylindrical short column 1, and elliptical holes are opened at the position of the grounding plate bolts on the support steel pipe rod 2 for the M14 grounding plate bolts to pass through the support steel pipe rod 2 and the reinforced concrete cylindrical short column 1. High-pressure grouting with cement slurry is carried out between the support steel pipe rod 2 and the reinforced concrete cylindrical short column 1 to make them well combined.

[0036] Considering the relatively small load of the busbar bridge in this application, the design idea of using the cable double trench wall as the support foundation of the busbar bridge is proposed, realizing the possibility of arranging the support foundation of the busbar bridge under conditions where there is no room for it, and solving the problem of the plane layout of the cable double trench and the busbar bridge foundation. It is proposed for the first time to set a Ф276 reinforced concrete cylindrical short column on the cover plate 9, and the outer 2 of the support steel pipe rod is sleeved on the reinforced concrete cylindrical short column 1. The reinforced concrete cylindrical short column 1 can be used as the support base of the busbar bridge, and the longitudinal steel bars of the short column, that is, the first steel bars 5, and the stirrups, that is, the second steel bars 6, penetrate through the reinforced concrete column pier 4 and extend to the bottom of the cable trench wall, connecting the cylindrical short column 1, the reinforced concrete column pier 4 and the cable trench wall into one body, solving the connection problem between the support steel pipe rod 2 and the circular reinforced concrete column pier 4.

[0037] In this application, a circular reinforced concrete column pier 4 is set within the depth range of the cable trench water passing trough, serving as a conversion member between the cable double trench wall and the support base of the busbar bridge. The diameter of the reinforced concrete column pier 4 is determined to meet the requirements of the embedded cable trench cover plate. A ring of steel bars, that is, the third steel bars 7, and radial steel bars centered on the center of the column pier, that is, the fourth steel bars 8, are arranged at regular intervals in the depth and diameter directions of the column pier. The ring steel bars and the radial steel bars are connected to the longitudinal steel bars and stirrups of the reinforced concrete column pier 4 into one body, and the force transmission path is simple and clear, ensuring the coordinated working stress of the steel bars and the reinforced concrete column pier 4. The setting of the column pier not only does not affect the width and net depth of the cable trench, but also effectively solves the problem that the cable double trench cover plate has nowhere to support at the support.

[0038] In this application, 2 sleeves with a diameter of Ф21 are reserved in the reinforced concrete cylindrical short column 1, and oval bolt holes are drilled in the grounding plate 3 on the support steel pipe pole 2; the grounding plate bolts for M14 are used to pass through the support steel pipe pole 2 and the reinforced concrete cylindrical short column 1, and the pulling effect of the bolts is utilized to ensure reliable connection among the support steel pipe pole 2, the reinforced concrete cylindrical short column 1, and the grounding plate 3. By high-pressure grouting of cement slurry between the support steel pipe pole 2 and the reinforced concrete cylindrical short column 1, the bonding effect of the cement slurry is utilized to achieve good combination between the support steel pipe pole 2 and the reinforced concrete cylindrical short column 1.

[0039] As can be seen from the above embodiments, this application provides a busbar bridge support seat and a cable double-gutter integrated foundation, mainly including: a cylindrical short column, a support steel pipe pole, and a reinforced concrete pier; the cylindrical short column is arranged on the reinforced concrete pier, and the cylindrical short column serves as the base of the busbar bridge support, and the support steel pipe pole is nested outside the cylindrical short column; the reinforced concrete pier is arranged on the wall of the cable double-gutter, and the reinforced concrete pier serves as a conversion member between the wall of the cable double-gutter and the base of the busbar bridge support; a grounding plate is arranged on the support steel pipe pole, the support steel pipe pole is fixed on the cylindrical short column, and the diameter of the reinforced concrete pier is smaller than the diameter of the cable double-gutter cover plate; wherein, the support steel pipe pole, the cylindrical short column, and the grounding plate are fixedly connected by bolts passing through the support steel pipe pole and the cylindrical short column. The cylindrical short column is provided with a first steel bar and a second steel bar, the first steel bar is a longitudinal steel bar, and the second steel bar is a stirrup. The first steel bar and the second steel bar penetrate through the reinforced concrete pier and extend to the wall of the cable double-gutter. The reinforced concrete pier is provided with a third steel bar and a fourth steel bar centered on the reinforced concrete pier. The first steel bar and the second steel bar of the cylindrical short column penetrate through the pier and extend to the bottom of the cable trench wall. The third steel bar and the fourth steel bar are arranged inside the pier to enhance the strength, stiffness, and stability of the short column, the pier, and the cable trench wall, eliminate the overturning hidden danger of the busbar bridge support, and improve the safety and reliability of the busbar bridge support. It solves the problem that the distance between the distribution device room and the main transformer area in the substation is small, and the busbar bridge support cannot be arranged.

[0040] For the similar parts between the embodiments provided in this application, reference can be made to each other. The specific embodiments provided above are only several examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation manner extended based on the solution of this application without creative work belongs to the protection scope of this application.

Claims

1. An integrated foundation for a busbar bridge support and cable double trench, characterized in that, It mainly includes: A cylindrical short column (1), a support steel pipe pole (2), and a reinforced concrete column pier (4); the cylindrical short column (1) is arranged on the reinforced concrete column pier (4), the cylindrical short column (1) serves as the base of the busbar bridge support, and the support steel pipe pole (2) is nested outside the cylindrical short column (1); the reinforced concrete column pier (4) is arranged on the wall of the cable double trench, and the reinforced concrete column pier (4) serves as a conversion member between the wall of the cable double trench and the base of the busbar bridge support; a grounding plate (3) is arranged on the support steel pipe pole (2), the support steel pipe pole (2) is fixed on the cylindrical short column (1), and the diameter of the reinforced concrete column pier (4) is smaller than the diameter of the cable double trench cover plate; wherein, bolts penetrate through the support steel pipe pole (2) and the cylindrical short column (1) so that the support steel pipe pole (2), the cylindrical short column (1) and the grounding plate (3) are fixedly connected.

2. The integrated foundation for a busbar bridge support and cable double trench according to claim 1, characterized in that, The support steel pipe pole (2) is fixed on the cylindrical short column (1) by bolts, and a plurality of sleeves are arranged on the cylindrical short column (1).

3. The integrated foundation for a busbar bridge support and cable double trench according to claim 2, characterized in that, Cement slurry is injected into the connection gap between the support steel pipe pole (2) and the cylindrical short column (1).

4. The integrated foundation for a busbar bridge support and cable double trench according to claim 1, characterized in that, A first steel bar (5) and a second steel bar (6) are arranged on the cylindrical short column (1), the first steel bar (5) is a longitudinal steel bar, and the second steel bar (6) is a stirrup.

5. The integrated foundation for a busbar bridge support and cable double trench according to claim 4, characterized in that, The first steel bar (5) and the second steel bar (6) penetrate through the reinforced concrete column pier (4) and extend to the wall of the cable double trench.

6. The integrated foundation for a busbar bridge support and cable double trench according to claim 4, characterized in that, A third steel bar (7) and a fourth steel bar (8) centered on the reinforced concrete column pier (4) are arranged on the reinforced concrete column pier (4).

7. The integrated foundation for a busbar bridge support and cable double trench according to claim 6, characterized in that, The third steel bar (7) is a circular steel bar, and the fourth steel bar (8) is a radial steel bar.

8. The integrated foundation for a busbar bridge support and cable double trench according to claim 7, characterized in that, The first steel bar (5), the second steel bar (6), the third steel bar (7) and the fourth steel bar (8) are connected as a whole.

9. The integrated foundation for a busbar bridge support and cable double trench according to claim 1, characterized in that, Bolting holes are formed in the grounding plate (3), the bolting holes are oval holes, and bolts penetrate through the support steel pipe pole (2) and the cylindrical short column (1) so that the support steel pipe pole (2), the cylindrical short column (1) and the grounding plate (3) are fixedly connected.

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