CN217789267U - Cable duct bank channel - Google Patents
Cable duct bank channel Download PDFInfo
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- CN217789267U CN217789267U CN202220805241.3U CN202220805241U CN217789267U CN 217789267 U CN217789267 U CN 217789267U CN 202220805241 U CN202220805241 U CN 202220805241U CN 217789267 U CN217789267 U CN 217789267U
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- calandria
- duct bank
- prefabricated pipeline
- cable duct
- pipeline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model relates to a cable duct bank passageway, it says and includes: the cushion layer is arranged on the bottom surface of the base groove; the cushion block is arranged on the cushion layer; the circular prefabricated pipeline is arranged on the arc-shaped supporting surface of the cushion block; the calandria positioning bracket is arranged in the round prefabricated pipeline; the pushing pulley block is arranged at the bottom of each calandria positioning bracket; the power cable protection calandria is arranged on the calandria positioning bracket; the communication cable protection calandria is arranged on the calandria positioning bracket; the filling body at least fills gaps among the round prefabricated pipeline, the power cable protection row pipe and the communication cable protection row pipe; and the backfill body is backfilled in the base groove and covers the upper part of the round prefabricated pipeline. The utility model discloses can shorten construction period, improve cable laying's security and the reliability of operation, the cost is low, the low carbon environmental protection.
Description
Technical Field
The utility model belongs to the technical field of electric power engineering, concretely relates to cable duct bank passageway.
Background
The cable duct bank is one of the most common cable channels in urban power cable engineering at present, and especially in cable engineering of 220kV and below, occupies most of the mileage. At present, the most common pipe arrangement laying mode in China is to dig a base groove, construct a cushion layer, arrange pipe arrangement pipe pillows (usually 2 m) according to requirements, lay pipelines at certain intervals, and backfill sandy soil. The calandria is mainly laid in the environment without a large amount of load on the ground, such as green belts, cells or non-roads in factories and the like, and is one of the main forms of the calandria project at present. When the calandria needs to go down a road or be laid along the road, the crossing of a cable which needs to bear a large load and a highway or a railway, usually an urban road and a section with heavy traffic, generally adopts a laying form of a reinforced concrete encapsulated calandria. In recent years, the prefabricated assembly type technology is developed vigorously, and in the field of cable pipes, a reinforced concrete pipe structure adopting socket type insertion connection after the prefabricated pipe is adopted is started.
Regarding the technology of cable pipes, many engineers and technicians in China perform appropriate optimization technically, but the overall technical concept is mainly based on the three types, such as the technical solutions in the patents with application numbers of 201921274428.X, 201520553903.2, 202010650835.7, and the like. It can be seen that the prior art cable duct bank has the following problems:
(1) At the crossing of a cable and a highway and a railway, which need to bear a large load on the ground, usually at a section of an urban road with heavy traffic, reinforced concrete is generally adopted to encapsulate a calandria, and the encapsulation of concrete in situ can prolong the construction period and greatly influence the urban traffic;
(2) The prefabricated pipe bank has the characteristic of short construction period, the problem of influence of cast-in-place pipe bank construction on ground traffic can be solved, and because the pipe bank adopts a socket type connecting structure, if the interface can not be controlled to be in smooth butt joint during construction, or after completion, the socket type interface is dislocated due to uneven settlement of foundation soil, when a subsequent cable is laid, an outer cable protection layer can be scraped, the quality problem that observation and detection cannot be carried out can be caused, and great hidden danger is brought to the safe operation of a power grid;
(3) Both cast-in-place calandria and reinforced concrete encapsulated calandria cannot play the bearing characteristic of the reinforcing steel bars, and the amount of concrete required is large, so that the method does not conform to the sustainable development of low carbon and environmental protection.
Disclosure of Invention
The utility model aims at providing a cable duct bank passageway that construction is simple and convenient, low carbon environmental protection, security and reliability are high.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a cable duct bank channel disposed within a foundation trench, comprising:
the cushion layer is arranged on the bottom surface of the base groove and extends along the length direction of the base groove;
the cushion blocks are arranged on the cushion layer and are distributed along the length direction of the foundation trench, and each cushion block is provided with an arc-shaped supporting surface;
the circular prefabricated pipeline is arranged on the arc-shaped supporting surface of the cushion block and extends along the length direction of the foundation groove;
the pipe arranging positioning supports are arranged in the round prefabricated pipeline and are distributed along the length direction of the round prefabricated pipeline;
the plurality of groups of pushing pulley blocks are respectively arranged at the bottom of each calandria positioning bracket;
the power cable protection calandria is arranged on the calandria positioning bracket and extends along the length direction of the round prefabricated pipeline;
the communication cable protection calandria is arranged on the calandria positioning bracket and extends along the length direction of the round prefabricated pipeline;
the filler at least fills gaps among the round prefabricated pipeline, the power cable protection row pipe and the communication cable protection row pipe;
and the backfill body is backfilled in the base groove and covers above the round prefabricated pipeline.
The round prefabricated pipeline comprises a plurality of round pipeline units which are connected in sequence.
And two adjacent circular pipeline units are connected through a socket type interface structure.
The calandria locating support comprises a plurality of transverse supporting plates and a plurality of longitudinal supporting plates, wherein the transverse supporting plates are transversely arranged, the longitudinal supporting plates are longitudinally arranged, and each longitudinal supporting plate is fixedly connected with each transverse supporting plate.
Each group of pushing pulleys comprises two pulleys which are arranged in parallel.
The cross section of the power cable protection calandria and the cross section of the communication cable protection calandria are both circular, and the diameter of the cross section of the power cable protection calandria is larger than that of the communication cable protection calandria.
The cushion layer is a plain concrete cushion layer.
The round prefabricated pipeline is a round reinforced concrete prefabricated pipeline.
The distance between the adjacent calandria positioning supports is 1.5 to 5m.
The filling body is cement mortar or cement paste, and the backfill body is sand.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses can shorten construction period, improve cable laying's security and reliability of operation, the cost is low, the low carbon environmental protection.
Drawings
Fig. 1 is a schematic cross-sectional view of a cable duct bank channel according to the present invention.
Fig. 2 is a schematic front view of a circular pipe unit in a cable duct bank channel according to the present invention.
Fig. 3 is a schematic cross-sectional view of a circular pipe unit in a cable duct bank channel according to the present invention.
Fig. 4 is a schematic connection diagram of the circular pipe unit in the cable duct bank channel according to the present invention.
In the drawings above: 1. a ground surface; 2. a side wall; 3. tamping foundation soil; 4. a cushion layer; 5. cushion blocks; 6. circularly prefabricating a pipeline; 7. a power cable protection row pipe; 8. a communication cable protection row pipe; 9. a rack pipe positioning bracket; 10. a pushing pulley block; 11. a filler; 12. backfilling the body; 13. a circular pipe unit.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings.
The first embodiment is as follows: as shown in fig. 1, the cable duct bank channel disposed in the foundation trench includes a cushion layer 4, a cushion block 5, a round prefabricated pipe 6, a duct bank positioning bracket 9, a push pulley block 10, a power cable protection duct bank 7, a communication cable protection duct bank 8, a filler 11, and a backfill body 12.
The foundation trench is pre-excavated and has a length perpendicular to the drawing plane of fig. 1, and a cross-section of the trench is generally trapezoidal, so that the sidewall 2 thereof is generally inclined with respect to the bottom surface thereof, and the bottom surface thereof has rammed foundation soil 3.
The cushion layer 4 is arranged on the bottom surface of the base groove and extends along the length direction of the base groove. The cushion 4 is a plain concrete cushion.
The multiple groups of cushion blocks 5 are arranged on the cushion layer 4 and are distributed along the length direction of the base groove, and the cushion blocks 5 are provided with arc-shaped supporting surfaces.
The round prefabricated pipe 6 is arranged on the arc-shaped supporting surface of the cushion block 5 and extends along the length direction of the foundation trench. The round prefabricated pipeline 6 is a round reinforced concrete prefabricated pipeline. As shown in fig. 2 to 4, the circular prefabricated pipe 6 includes a plurality of circular pipe units 13 connected in sequence, and two adjacent circular pipe units 13 are connected through a spigot-and-socket type interface structure, that is, one end of each circular pipe unit 13 is expanded to form a spigot with an inner diameter matched with the outer diameter of the other end of the circular pipe unit 13, so that the other circular pipe unit 13 is inserted into the spigot to realize connection.
A plurality of calandria locating support 9 sets up in circular prefabricated pipeline 6 to arrange along circular prefabricated pipeline 6's length direction, adopt steel structure support. The calandria positioning bracket 9 comprises a plurality of transverse supporting plates which are transversely arranged and a plurality of longitudinal supporting plates which are longitudinally arranged, and each longitudinal supporting plate is fixedly connected with each transverse supporting plate. In this embodiment, the rack pipe positioning bracket 9 comprises three layers of transverse supporting plates with different lengths and adapted to the space widths of the round prefabricated pipe 6 at different positions, and a longitudinal supporting plate arranged in the middle of each transverse supporting plate.
The plurality of groups of pushing pulley blocks 10 are respectively arranged at the bottom of each calandria positioning bracket 9, and each group of pushing pulleys comprises two pulleys arranged in parallel.
The distance between the adjacent calandria positioning brackets 9 is 1.5 to 5m, preferably 2m, so the distance between the adjacent pushing pulley blocks 10 is also 1.5 to 5m, preferably 2m.
The plurality of power cable protection gauntlets 7 are arranged on the gauntlet positioning bracket 9, extend along the length direction of the round prefabricated pipeline 6 and have a round section.
The plurality of communication cable protection calandria 8 are arranged on the calandria positioning bracket 9, extend along the length direction of the round prefabricated pipeline 6 and have a round section. The diameter of the cross section of the power cable protection calandria 7 is larger than that of the cross section of the communication cable protection calandria 8.
The filler 11 at least fills the gaps between the round prefabricated pipeline 6 and the power cable protection calandria 7 and the communication cable protection calandria 8, and the filler 11 is cement mortar or cement paste.
The backfill body 12 is backfilled in the foundation trench and covers the upper part of the round prefabricated pipeline 6, and the backfill body 12 is sand.
The utility model relates to an adopt 6 protections of circular prefabricated pipeline, lay the calandria passageway of a plurality of cable protection pipes inside prefabricated pipeline, compare in the calandria passageway of current adoption cast in situ reinforced concrete protection, have that construction period is short, the consumptive material is little, the advantage of low carbon environmental protection, be particularly useful for there being heavy-duty car to pass or probably take place in the engineering that external force abolishes influence cable channel safety above the calandria.
The scheme is characterized in that:
(1) In the area needing to consider important traffic load of the ground 1 or other areas needing large-scale ground 1 load, excavating a foundation trench, paving a plain concrete cushion layer 4 with a certain thickness after tamping foundation soil 3, arranging a circular prefabricated reinforced concrete pipeline on the cushion layer 4, wherein the pipeline adopts a spigot-and-socket joint, and 2 cushion blocks 5 (a group of cushion blocks 5) are respectively arranged at the left side and the right side between the pipeline and the cushion layer 4 to meet the requirement of pipeline fixation;
(2) Inside the round prefabricated pipeline 6, according to the requirement of laying cables, a plurality of power cable protection calandria 7 and communication cable protection calandria 8 are symmetrically arranged left and right, the protection calandria are fixed by a steel structure calandria positioning bracket 9 to meet the requirement of the space between the calandria, and the space between the calandria positioning bracket 9 and the pipe pillow/cushion block 5 of the calandria is the same at 2m along the longitudinal direction of the pipeline;
(3) In order to facilitate laying, 2 pulleys are arranged between the calandria positioning support 9 and the bottom of the round prefabricated pipeline 6, the distance between the pulleys is the same as that between the supports, namely 2.0m, and the calandria is laid between the working wells by pushing;
(4) After the circular prefabricated pipeline 6 is laid, sand and soil are backfilled around the circular prefabricated pipeline 6 and are dense, and a gap between the protective exhaust pipe in the circular prefabricated pipeline 6 and the reinforced concrete pipeline is filled with cement mortar or cement paste.
When a heavy-duty vehicle passes through the ground 1 or other large loads act on the ground 1, the loads act on the prefabricated circular reinforced concrete pipeline, and the characteristic that the circular pipeline is well stressed in an underground structure is fully exerted. The encapsulation-protected concrete is changed from the existing rectangular full-section encapsulation to a round reinforced concrete prefabricated pipeline, so that the effect and the utility of the concrete are greatly improved, and the characteristic of good stress of a round bearing pipe of an underground pipeline structure is fully exerted.
Compared with the existing cable duct scheme, the cable duct has the following advantages:
1. the prefabricated circular pipeline is used as an outer protective layer of the cable duct bank, and compared with a method of cast-in-place encapsulated concrete, the construction period of a site is shortened;
2. the circular pipeline is used for protecting the discharge pipes, so that the characteristic of good stress of the circular pipeline of the underground structure is fully exerted, and a large amount of concrete is saved;
3. compared with a sectional integrally prefabricated concrete calandria, the external protection concrete structure and the internal calandria structure which is relatively independent are adopted, so that the smoothness of the interior of the calandria is fully guaranteed, and the safety of cable laying and the reliability of operation are improved;
4. a calandria system which is separated and positioned by a bracket is arranged in the circular pipeline, so that the space and the relative position between calandria are ensured, and the accuracy of cable laying is improved;
5. taking 8-hole calandria as an example, the reinforced concrete calandria is encapsulated by cast-in-place concrete or is integrally prefabricated, and the concrete required by the calandria is about 0.80m 3 The volume of the solution is only 0.35 m 3 And/m, although the using amount of a certain reinforcing steel bar is increased, the whole manufacturing cost is low, and the steel bar is low-carbon and environment-friendly.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a cable duct bank passageway, sets up in basic groove, its characterized in that: the cable duct bank channel comprises:
the cushion layer is arranged on the bottom surface of the base groove and extends along the length direction of the base groove;
the cushion blocks are arranged on the cushion layer and are distributed along the length direction of the foundation trench, and each cushion block is provided with an arc-shaped supporting surface;
the circular prefabricated pipeline is arranged on the arc-shaped supporting surface of the cushion block and extends along the length direction of the foundation groove;
the pipe arranging positioning supports are arranged in the round prefabricated pipeline and are distributed along the length direction of the round prefabricated pipeline;
the plurality of groups of pushing pulley blocks are respectively arranged at the bottom of each calandria positioning bracket;
the power cable protection calandria is arranged on the calandria positioning bracket and extends along the length direction of the round prefabricated pipeline;
the communication cable protection calandria is arranged on the calandria positioning bracket and extends along the length direction of the round prefabricated pipeline;
the filler at least fills gaps among the round prefabricated pipeline, the power cable protection row pipe and the communication cable protection row pipe;
and the backfill body is backfilled in the base groove and covers above the round prefabricated pipeline.
2. A cable duct bank channel according to claim 1, wherein: the circular prefabricated pipeline comprises a plurality of circular pipeline units which are connected in sequence.
3. A cable duct bank channel according to claim 2, wherein: and two adjacent circular pipeline units are connected through a socket type interface structure.
4. A cable duct bank channel according to claim 1, wherein: the calandria locating support comprises a plurality of transverse supporting plates and a plurality of longitudinal supporting plates, wherein the transverse supporting plates are transversely arranged, the longitudinal supporting plates are longitudinally arranged, and each longitudinal supporting plate is fixedly connected with each transverse supporting plate.
5. A cable duct bank channel according to claim 1, wherein: each group of the pushing pulleys comprises two pulleys which are arranged in parallel.
6. A cable duct bank channel according to claim 1, wherein: the cross section of the power cable protection calandria and the cross section of the communication cable protection calandria are both circular, and the diameter of the cross section of the power cable protection calandria is larger than that of the communication cable protection calandria.
7. A cable duct bank channel according to claim 1, wherein: the cushion layer is a plain concrete cushion layer.
8. A cable duct bank channel according to claim 1, wherein: the round prefabricated pipeline is a round reinforced concrete prefabricated pipeline.
9. A cable duct bank channel according to claim 1, wherein: the distance between the adjacent calandria positioning brackets is 1.5-5m.
10. A cable duct bank channel according to claim 1, wherein: the filling body is cement mortar or cement paste, and the backfill body is sand soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220805241.3U CN217789267U (en) | 2022-04-08 | 2022-04-08 | Cable duct bank channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220805241.3U CN217789267U (en) | 2022-04-08 | 2022-04-08 | Cable duct bank channel |
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| Publication Number | Publication Date |
|---|---|
| CN217789267U true CN217789267U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220805241.3U Active CN217789267U (en) | 2022-04-08 | 2022-04-08 | Cable duct bank channel |
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| Country | Link |
|---|---|
| CN (1) | CN217789267U (en) |
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2022
- 2022-04-08 CN CN202220805241.3U patent/CN217789267U/en active Active
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