CN215253004U - Novel footpath applied to circular cable tunnel - Google Patents
Novel footpath applied to circular cable tunnel Download PDFInfo
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- CN215253004U CN215253004U CN202023020668.2U CN202023020668U CN215253004U CN 215253004 U CN215253004 U CN 215253004U CN 202023020668 U CN202023020668 U CN 202023020668U CN 215253004 U CN215253004 U CN 215253004U
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Abstract
The utility model provides a be applied to circular cable tunnel's novel pavement, includes the pavement board, still including setting up the cast in situ concrete structural layer in shield structure section of jurisdiction bottom, cast in situ concrete structural layer middle part is provided with the cable holding tank that holds low pressure supply cable, sets up the pavement board on the cable holding tank. The cast-in-place concrete structure layers on the two sides of the footpath plate are also provided with water collecting channels with certain gradients. Circular section bottom space of make full use of not only can satisfy personnel and pass, still reserves drainage, low tension cable and lays the passageway, separates low pressure power supply cable and high tension transmission cable, ensures power supply and tunnel operation safety.
Description
Technical Field
The utility model belongs to cable tunnel construction field, concretely relates to be applied to circular cable tunnel's novel pavement.
Background
Along with the rapid development of the economy of China, the urbanization process is gradually accelerated. Urban population is more and more dense, and the environmental requirement is more and more high, and transmission line corridor resource is more and more scarce. The power cable tunnel has the advantages of large transmission capacity, small damage to the environment, city land resource saving and the like, and is widely applied to the city power grid.
Common construction methods of the power cable tunnel include an open cut method, a mine method, a pipe jacking method, a shield method and the like, and the pipe jacking method and the shield method have the advantages of no damage to ground traffic, small influence on the environment, high safety, high construction speed and the like, so that the power cable tunnel is widely applied to the cable tunnel. The shield (pipe jacking) cable tunnel generally adopts a circular section, the bottom space is difficult to utilize, and the existing cast-in-place footpath mainly adopts a mode (upper surface horizontal) which can only meet the passing of single personnel and is difficult to meet the drainage requirement of the tunnel. Meanwhile, in the cable tunnel, a low-voltage cable (with the voltage level of 10kV or below) for supplying power to the cable tunnel and a high-voltage cable are laid in the same bin, and the low-voltage cable is easy to have the phenomena of joint explosion and the like, so that the high-voltage transmission cable and the tunnel can be threatened greatly.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to guarantee that personnel are current, drainage and cable tunnel's safety problem in the cable tunnel, for solving above-mentioned problem, the utility model provides a be applied to circular cable tunnel's novel pavement.
The purpose of the utility model is realized with the following mode:
the utility model provides a be applied to circular cable tunnel's novel pavement, includes pavement board 6, shield structure section of jurisdiction 1, still including setting up the cast in situ concrete structure 2 in shield structure section of jurisdiction 1 bottom, cast in situ concrete structure layer 2 middle parts are provided with the cable holding tank 3 that holds low pressure supply cable 4, set up pavement board 6 on the cable holding tank 3.
The footpath plates 6 are prefabricated plates which gradually decrease from the middle to the two sides, the height of the end parts of the footpath plates 6 is less than that of the side walls of the top layer 8, and the height of the center of the footpath plates 6 is greater than that of the side walls of the top layer 8.
Waterproof layers are filled in gaps between the sidewalk boards 6 and the side walls of the top layer and on end faces of two ends of the sidewalk boards 6, and the elevation of each waterproof layer is equal to that of the side wall of the top layer 8.
The cast-in-place concrete structural layer 2 at the end parts of the two sides of the footpath plate 6 is provided with a water collecting channel 5, and the highest point of the water collecting channel 5 is the lowest point of the cast-in-place concrete structural layer 2.
Compared with the prior art, the utility model discloses a set up drain, pavement board and cable holding tank, the circular section bottom space of make full use of not only can satisfy personnel current, still reserves drainage, low tension cable laying passageway, separates low voltage power supply cable and high tension transmission cable, guarantee power supply and tunnel operation safety.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the footplate.
Fig. 3 is an angular schematic view of the deck.
Fig. 4 is another angle schematic view of the deck.
Fig. 5 is a shield segment construction schematic.
Fig. 6 is a schematic position diagram of a cast-in-place concrete structure layer and embedded angle steel.
Fig. 7 is a schematic view of laying a low-voltage power supply cable in a cable-accommodating groove.
Fig. 8 is a schematic view of the construction of the footplate.
Wherein, 1 is a shield segment; 2, a cast-in-place concrete structure layer; 3 is a cable accommodating groove; 4 is a low voltage power supply cable; 5 is a water collecting channel; 6 is a footpath plate; 7 is angle steel; 8 is a first step; and 9 is a second step.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the utility model discloses the embodiment of applying for, to the technical personnel of this field, a plurality of changes and improvements etc. that make, all other embodiments that obtain all belong to the scope of the utility model protection.
As shown in fig. 1-8, the utility model relates to a be applied to novel pavement of circular cable tunnel, including shield structure section of jurisdiction 1, shield structure section of jurisdiction 1 bottom is equipped with cast in situ concrete structural layer 2, and cast in situ concrete structural layer 2 upper berth is equipped with pavement board 6.
The pavement board 6 for having antiskid, fire-retardant pavement board, and the height that highly is higher than both ends in the middle of pavement board 6 makes the cross-section of pavement board 6 present certain radian, the water in the cable tunnel of being convenient for flows to both ends from the middle of pavement board 6. After the footpath plate 6 is prefabricated by a factory, the footpath plate has the effects of skid resistance, load bearing and flame retardance, the quality is guaranteed, and the footpath plate is assembled on site and is installed on site quickly.
The footpath plates 6 are prefabricated plates and gradually decrease from the middle to the two sides to form a certain gradient, so that water on the footpath plates 6 flows to the two ends from the middle along the gradient, and the water is prevented from being gathered on the footpath plates 6.
The middle part of cast in situ concrete structural layer 2 is equipped with cable holding tank 4 for hold low voltage power supply cable 4, satisfy low voltage cable and lay the space requirement, separate low voltage cable and high tension transmission cable simultaneously, guarantee cable tunnel power supply safety.
The side end of the cable accommodating groove 4 is in a step shape and comprises a top layer 8 and a bottom layer 9, the low-voltage power supply cable 4 is accommodated in the bottom layer 9, and the top layer 8 is used for erecting the footpath plate 6. The corner pre-buried angle steel 7 that has of being connected of top layer 8 and bottom 9 sets up pavement board 6 on the pre-buried angle steel 7 for pavement board 6 sets up on the top layer 9 of cable holding tank 3, and the lateral wall height of top layer 9 is greater than the height of pavement board 6 tip, and is less than the height in the middle part of pavement board 6.
In order to avoid water on the footplate 6 from penetrating into the cable accommodating groove 3 along with water in the cable tunnel and collecting on the footplate 6, a water-stop layer is filled in the gap between the top layer 8 of the cable accommodating groove 3 and the footplate 6 and on the end face of the footplate 6. The elevation of water-resisting layer is less than the elevation in the middle of the footpath board 6, equals the elevation of the 8 lateral walls of top layer for water on the footpath board 6 flows to both sides by the middle flow direction, flows to the cast in situ concrete structural layer 2 of 3 both sides of cable holding tank on the surface. The water-resisting layer can be a cement layer.
The cast in situ concrete structural layer 2 of 3 both sides of cable holding tank has seted up water catch bowl 5 on the surface, the elevation at the both ends of cast in situ concrete structural layer 2 is greater than the elevation of the highest end of water catch bowl 5, the elevation of the tip of the cast in situ concrete structural layer 2 of being connected with the water-proof layer is greater than the elevation of the highest end of water catch bowl 5, make water catch bowl 5 be located the minimum of cast in situ concrete structural layer 2, certain slope has, be convenient for infiltration in the cable tunnel, wash in the whole water catch bowl 5 that flows in of sewage, collect waste water.
The working process of the utility model is as follows:
first, the shield segment 1 is constructed.
And then, pouring a cast-in-place concrete structure layer 2 at the bottom of the shield segment 1 after construction, reserving a cable accommodating groove 3 and a water collecting channel 5 during pouring, and embedding angle steel 7.
Then, after the cast-in-place concrete structure layer 2 is solidified, the low-voltage power supply cable 4 is laid in the cable accommodating groove 3.
And finally, constructing the footpath plates 6 on the angle steels 7, after all the footpath plates 6 are spliced and constructed, smearing waterproof layers in gaps between the footpath plates 6 and the side walls of the top layer and on the end surfaces of two ends of the footpath plates 6, and finishing the footpath construction work of the cable tunnel.
The utility model discloses a cast in situ concrete structural layer 2, pre-buried angle steel 7, 6 triplexs of pavement board. The construction method comprises the following steps of firstly constructing the shield segment 1, then casting the concrete structure layer 2 in situ, simultaneously embedding angle steel 7, laying and constructing the low-voltage power supply cable 4 after the concrete structure is maintained to meet design requirements, and finally assembling and constructing the pedestrian walkway plates.
The utility model discloses have that personnel are current, drainage, low pressure supply cable lay three function. Personnel pass through the footplate 6, the footplate 6 is prefabricated by a factory, the quality is guaranteed, and the field installation speed is high; water collecting channels are arranged on two sides of the pedestrian walkway, and water seepage and cleaning sewage in the tunnel are collected by setting a certain gradient; set up low pressure power supply cable passageway under the people's walk road board, satisfy low tension cable and lay the space requirement, separate low tension cable and high tension transmission cable simultaneously, guarantee tunnel power supply safety.
What has been described above is only the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, without departing from the overall concept of the present invention, a plurality of changes and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the utility of the patent.
Claims (5)
1. A novel footpath applied to a circular cable tunnel comprises a footpath plate (6), and is characterized in that: still including setting up cast in situ concrete structural layer (2) in shield structure section of jurisdiction (1) bottom, cast in situ concrete structural layer (2) middle part is provided with cable holding tank (3) that hold low pressure power supply cable (4), sets up pavement board (6) on cable holding tank (3).
2. A novel walkway as claimed in claim 1, wherein: cable holding tank (3) are the echelonment, include with pavement board (6) complex top layer (8) and hold bottom (9) of low pressure supply cable (4), the pre-buried angle steel (7) of corner of bottom (9), top layer (8) of cable holding tank (3), and pavement board (6) are set up on pre-buried angle steel (7).
3. A novel walkway applied to circular cable tunnels as claimed in claim 2, wherein: the pavement plates (6) are prefabricated plates which gradually decrease from the middle to two sides, the height of the end parts of the pavement plates (6) is smaller than that of the side walls of the top layer (8), and the height of the center of the pavement plates (6) is larger than that of the side walls of the top layer (8).
4. A novel walkway as claimed in claim 2 or 3, wherein: waterproof layers are filled in gaps between the sidewalk boards (6) and the side walls of the top layer and on end faces of two ends of the sidewalk boards (6), and the elevation of each waterproof layer is level with that of the side wall of the top layer (8).
5. The novel footpath applied to the circular cable tunnel as claimed in claim 4, wherein: the water collecting channel (5) is arranged on the cast-in-place concrete structure layer (2) at the end parts of the two sides of the footpath plate (6), and the highest point of the water collecting channel (5) is the lowest point of the cast-in-place concrete structure layer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023020668.2U CN215253004U (en) | 2020-12-16 | 2020-12-16 | Novel footpath applied to circular cable tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023020668.2U CN215253004U (en) | 2020-12-16 | 2020-12-16 | Novel footpath applied to circular cable tunnel |
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| CN215253004U true CN215253004U (en) | 2021-12-21 |
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| CN202023020668.2U Active CN215253004U (en) | 2020-12-16 | 2020-12-16 | Novel footpath applied to circular cable tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262630A (en) * | 2022-07-29 | 2022-11-01 | 湖北省电力勘测设计院有限公司 | Cable tunnel and method for installing cable tunnel |
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2020
- 2020-12-16 CN CN202023020668.2U patent/CN215253004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115262630A (en) * | 2022-07-29 | 2022-11-01 | 湖北省电力勘测设计院有限公司 | Cable tunnel and method for installing cable tunnel |
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