CN108891423B - Track line structure of reserved branch line condition - Google Patents
Track line structure of reserved branch line condition Download PDFInfo
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- CN108891423B CN108891423B CN201810844681.8A CN201810844681A CN108891423B CN 108891423 B CN108891423 B CN 108891423B CN 201810844681 A CN201810844681 A CN 201810844681A CN 108891423 B CN108891423 B CN 108891423B
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- 238000010276 construction Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 230000007774 longterm Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B1/00—General arrangement of stations, platforms, or sidings; Railway networks; Rail vehicle marshalling systems
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a track line structure for reserving branch line conditions, which is characterized in that a first platform, a second platform, a first main line track and a second main line track are arranged in a staggered manner to form a structural form that the first platform is positioned between the first main line track and the second main line track, and the first main line track is positioned between the first platform and the second platform; a parking line track is further arranged between the first main line track and the first platform, one end of the parking line track is connected with the first main line track and the second main line track through turnouts, and the other end of the parking line track extends between the first main line track and the second main line track to form a first reserved branch line track structure. The method of the technical scheme of the invention provides a track line structure of urban track traffic reserved branch line conditions, which can reduce the recent construction scale and reduce the investment risk, aiming at the situation that the track traffic reserved branch line engineering quantity is large and the surrounding environment is easy to be greatly influenced so as to influence the urban overall planning in the prior art.
Description
Technical Field
The invention belongs to the field of urban rail transit line design, and particularly relates to a rail line structure with reserved branch line conditions.
Background
With the rapid development of cities, urban planning is increasingly perfect, and rail transit plays an increasingly important role in urban traffic planning development, and the development types are also increasingly diversified. The branch reservation condition of a track traffic line is considered to enter the field of view of people more and more frequently. The reserved branch engineering conditions are usually determined by line trend, surrounding environment and laying conditions, the current common reserved branch construction conditions are that a double-island four-wire station is built once, a main line is arranged on the outer side, a branch line is arranged on the inner side, a single crossover line is arranged in front of the station, a crossover line is arranged behind the station and is communicated with the main line, meanwhile, a crossover line and a parking foldback line are arranged on the branch line, and after the branch line is built, the branch line and the main line can realize the same transfer in the main-passenger flow direction. In the construction of branch engineering, the stations and part of front and rear sections need to be built once in the near term in consideration of not affecting the normal operation of the main line, and the near term engineering scale is large.
Fig. 1 is a schematic diagram of a reserved branch engineering condition of urban rail transit in the prior art, in this scheme, a station is a double-island four-wire station, the distance between a main rail 4 and a main rail 5 is about 35m, and meanwhile, the structure is complex, and a plurality of switches, cross-over lines and the like are adopted. Therefore, the method has the advantages that no matter the method adopts underground or overhead forms, the engineering quantity is large, the influence range on the periphery is wide, the recent engineering investment is large, and the method is not beneficial to the development of society such as saving type environment protection. Therefore, how to realize the construction conditions of reserved long-term branch engineering while reducing engineering investment and reducing the influence on the surrounding environment is a problem to be solved.
Disclosure of Invention
In response to the above-identified deficiencies or improvements in the prior art, the present invention provides a track line structure that reserves a spur condition, which at least partially addresses the above-identified problems. The method of the technical scheme of the invention provides a line arrangement structure of the reserved branch line condition of the urban rail transit, which can reduce the recent construction scale and the investment risk, aiming at the situation that the reserved branch line condition of the rail transit has large engineering quantity and easily causes great influence on the surrounding environment so as to influence the urban overall planning in the prior art, thereby improving the design quality, optimizing the line planning, reducing the engineering investment and not influencing the operation of the existing main line when the future branch line engineering is implemented.
In order to achieve the above object, according to one aspect of the present invention, there is provided a track line structure for reserving a spur condition, comprising a first station, a second station, and a first main track and a second main track provided in parallel, characterized in that,
The first platform, the second platform, the first main line track and the second main line track are arranged in a staggered mode to form a structural form that the first platform is positioned between the first main line track and the second main line track, and the first main line track is positioned between the first platform and the second platform; and a parking line track is further arranged between the first main line track and the first platform, one end of the parking line track is connected with the first main line track and the second main line track respectively through turnouts, the other end of the parking line track extends between the first main line track and the second main line track to form a second reserved branch line track structure, and the second reserved branch line track is not intersected with the second main line track.
As a preferred aspect of the present invention, the method further includes a first reserved branch track, the first reserved branch track being connected to the first main track by a first bridge and not intersecting the second main track or the second reserved branch track.
As one preferable mode of the technical scheme of the invention, the railway train further comprises a single crossover wire, wherein the single crossover wire is arranged between the first turnout and the platform and is used for realizing the switching of the railway train on the first main line track and the stop line track.
As a preferred aspect of the present invention, the first reserved spur track and the second reserved spur track are preferably arranged in parallel or non-intersecting.
As a preferred aspect of the present invention, the parking line track length is preferably not less than the platform length.
As a preferred embodiment of the present invention, the distance between the first main track and the second main track is preferably 20m.
As an embodiment of the present invention, the distance between the first main line and the stop line is preferably 5m.
In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:
1) According to the technical scheme, the side type platform is matched with the island type platform to replace the traditional double island type platform mode, and the arrangement mode of the lines and the platforms is adjusted, so that the same-platform transfer in the main and passenger flow direction can be met, the line spacing between the stations and the sections can be reduced, the engineering scale is reduced, and the investment is saved. Compared with the traditional method of building a double-island four-wire station at one time, the width of the station structure is reduced from 40.2m to 31.1m, the interval maximum line spacing is reduced from 35m to 20m, and the engineering scale, investment and influence on the surrounding environment are effectively reduced.
2) According to the method of the technical scheme, as the original two island-type platforms are changed into one island-type platform to be matched with one side-type platform, the area divided between two main lines is effectively reduced; meanwhile, the area between the two main lines is effectively utilized, the reserved branch lines are brought into between the two main lines, on one hand, branch lines do not need to be additionally paved outside the main lines, so that the area of the land is wasted, and on the other hand, the utilization efficiency of the area between the two main lines is effectively improved.
3) According to the method, the switch between the two main lines and the railway train is realized by arranging the stop line, the turnout and the single crossover line between the two main lines, so that compared with the traditional technology, the excavation length of the station is greatly reduced, the construction difficulty is reduced, the occupied area of the station and the length of the paved track are reduced on the premise that the requirement of the reserved branch line of the railway traffic is met, the land utilization efficiency is improved, and the construction cost is reduced.
Drawings
FIG. 1 is a schematic diagram of a circuit arrangement of a prior art urban rail transit reservation spur condition;
fig. 2 is a schematic diagram of a circuit arrangement structure of a reserved branch line condition of urban rail transit in an embodiment of the invention.
In the drawings, like reference numerals designate like structures and elements throughout the several views, wherein: 1-long-term branch rail, 2-car bumper, 3-car bumper, 4-main rail, 5-main rail, 6-car bumper, 7-car bumper, 8-station, 9-cross-over line, 10-parking line, 11-reserved branch rail, 12-reserved branch rail, A1-A6-turnout and B1-B6-turnout.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other. The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 2, the recent engineering station in this embodiment is an island-side station (i.e. the platform 8 is an island platform and a side platform), the width of the side platform is preferably 6.5m, and the width of the island platform is preferably 12m. The side platform, the main line track 4, the island platform and the main line track 5 are sequentially arranged at intervals, namely, the main line track 4 is laid between the side platform and the island platform, and the island platform is arranged between the main line track 4 and the main line track 5. Further, a parking line 10 (one end of the parking line is a reserved branch line track 12, and extends for a long time to form a branch line track 1, as shown by a dotted line part in fig. 2) is laid between the island platform and the main line track 4. In the present embodiment, the parking line 10 and the main line tracks 4 and 5 are preferably arranged in parallel with each other, so that the distance between the main line tracks 4 and 5 can be reduced as much as possible, thereby reducing the occupied area. On the basis of this, the distance between the long-term reservation track 12 (or the extension of the stop line 10) of the second branch track and the main track 4 is preferably not less than 5.0m. The parking line 10 is connected to the main line track 4 by a single crossover line outside the platform, which is realized by the switch B3, the switch B2 and the track therebetween, as shown in fig. 2. Further, a turnout B1 is further arranged on the main line track 4 far away from the single crossover line and the platform, the branch line is separated from the main line track 4 through the turnout B1, and extends between the main line track 4 and the main line track 5 to form a reserved track 11, and after being separated from the main line track 4, a car bumper 3 is arranged and an extension space is reserved to form the reserved branch line track 11 of the long-term branch line track 1, as shown by a dotted line part in fig. 2.
Further, in this embodiment, the reserved track 11 and the reserved track 12 are preferably provided with R-400m curves to be separated from the main line structure as soon as possible, and the car bumper 3 and the car bumper 2 are respectively provided after the stage implementation conditions are satisfied, so as to prevent a safety accident from occurring at the end of the recent line. Preferably, in this embodiment, the stop line 10 is connected to the main line track 4 and the main line track 5 by way of switches and tracks, respectively, outside the platform on the other side, i.e. on the side opposite to the single crossover direction. Specifically, on the outer side of the platform far from the single crossover, the stop line track 10 is divided into two tracks by the switch B4, and then the two tracks are connected with the main line track 4 and the main line track 5 by the switch B6 and the switch B5, respectively, so that the rail train can smoothly go in and out of the stop line 10 from the main line track 4 or the main line track 5.
On the basis, when a long-term new branch engineering is further constructed, the car bumper 3 and the car bumper 2 are required to be removed, the branch line preferably descends by about 200m with a gradient of-2 permillage (6 marshalling B-type cars are taken as an example), then descends by about 28 permillage with a gradient to rapidly pull out the vertical distance from the main line 5, and when the vertical distance reaches an interchange condition, the reserved rail 11 and the reserved rail 12 downwards penetrate through the main line rail 5 to extend outwards. As shown in fig. 2, the branch-line-direction train represented by the broken line enters the station after entering the reserved track 12 from the long-term branch line, shares an island-type platform with the main track 5, enters the main track 5 after exiting the station through the turnout B4 and the turnout B5; the main line direction train enters the station from the main line track 4, stops at the side platform, runs along the main line track 4 after exiting, and enters the reserved track 11 through the turnout B1, so as to enter the long-term branch line.
As can be seen from a comparison between fig. 1 and fig. 2, compared with the track line structure in the prior art in fig. 1, the technical solution in the embodiment in fig. 2 significantly reduces the distance between the main track 4 and the main track 5, i.e. reduces the area occupied by the track line. Further, in the prior art, a bidirectional track needs to be laid between two island platforms to achieve the purpose of reserving branch line conditions, that is, two track lines are laid between the two island platforms, and two main line tracks are also laid on the outer sides of the two island platforms. Meanwhile, a large number of turnouts, single crossover lines and cross crossover lines are needed between two tracks between island platforms and between two main line tracks to realize line communication, so that great difficulty exists in construction, and the island platforms are too many in component parts, high in maintenance frequency and spare part requirement and high in maintenance cost. The reserved branch line scheme of the embodiment greatly reduces the distance between the two main line tracks, namely reduces the occupied area of the land block. Besides, besides the main line track, only one stop line is paved between the platforms, and the single crossover line and the turnout are assisted, so that the rail train can be switched between different rail lines, the construction scale and the engineering quantity are greatly reduced, and the construction and maintenance are convenient.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A track line structure for reserving branch line conditions comprises a first platform, a second platform, a first main line track and a second main line track which are arranged in parallel, and is characterized in that,
The first platform, the second platform, the first main line track and the second main line track are arranged in a staggered mode to form a structural form that the first platform is positioned between the first main line track and the second main line track, and the first main line track is positioned between the first platform and the second platform; a parking line track is further arranged between the first main line track and the first platform, one end of the parking line track is connected with the first main line track and the second main line track through turnouts, the other end of the parking line track extends between the first main line track and the second main line track to form a second reserved branch line track structure, and the second reserved branch line track does not intersect with the second main line track;
The first reserved branch track is connected with the first main track through a first bifurcation and does not intersect with the second main track or the second reserved branch track;
The first reserved branch line track and the second reserved branch line track are arranged in parallel or in a non-intersecting manner;
the end parts of the first reserved branch line track and the second reserved branch line track are provided with a car bumper;
The system also comprises a single crossover line, wherein the single crossover line is arranged between the first turnout and the platform and is used for realizing the switching of the rail train on the first main line track and the stop line track.
2. A reserved spur condition track line structure according to claim 1, wherein the park line track length is not less than a platform length.
3. A track line structure reserving a spur condition according to claim 1 or 2, wherein the first main track is spaced from the second main track by 20m.
4. A track line structure reserving a spur condition as claimed in claim 1 or 2, wherein the first main track is spaced 5m from the stopping line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810844681.8A CN108891423B (en) | 2018-07-27 | 2018-07-27 | Track line structure of reserved branch line condition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810844681.8A CN108891423B (en) | 2018-07-27 | 2018-07-27 | Track line structure of reserved branch line condition |
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| CN108891423A CN108891423A (en) | 2018-11-27 |
| CN108891423B true CN108891423B (en) | 2024-04-19 |
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| CN110550051B (en) * | 2019-09-23 | 2024-05-17 | 中铁第四勘察设计院集团有限公司 | Track line structure reserved with long-term splitting condition and construction method thereof |
| CN110539753A (en) * | 2019-09-30 | 2019-12-06 | 广州地铁设计研究院股份有限公司 | Subway line disassembling arrangement structure and construction method |
| CN112660163B (en) * | 2019-10-16 | 2023-05-16 | 无锡市轨道建设设计咨询有限公司 | Double-track traffic line shared vehicle section wiring form and double-island platform thereof |
| CN111634296B (en) * | 2020-06-28 | 2023-04-25 | 中铁第四勘察设计院集团有限公司 | Straddling type monorail wiring system and operation method |
| CN112482809B (en) * | 2020-11-24 | 2022-05-17 | 中铁四局集团第二工程有限公司 | In-situ rapid reconstruction and upgrade construction method for existing operation railway station |
| CN112793588A (en) * | 2021-01-22 | 2021-05-14 | 广州地铁设计研究院股份有限公司 | Subway line disassembling arrangement structure and construction method |
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