CN107585166B - Rail transit turn-back line arrangement structure - Google Patents
Rail transit turn-back line arrangement structure Download PDFInfo
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- CN107585166B CN107585166B CN201710851902.XA CN201710851902A CN107585166B CN 107585166 B CN107585166 B CN 107585166B CN 201710851902 A CN201710851902 A CN 201710851902A CN 107585166 B CN107585166 B CN 107585166B
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Abstract
The technical scheme of the invention discloses a track traffic turn-back line arrangement structure, which comprises a track area and a track positive line, wherein the track positive line is paved on the track area and comprises two parallel first tracks and two parallel second tracks, a first single turn-back line and a second single turn-back line are further arranged between the first tracks and the second tracks, the first single turn-back line is arranged in front of a station, and the second single turn-back line is arranged behind the station and used for realizing the switching between the first tracks and the second tracks of a train in front of and/or behind the station and can be simultaneously used for turning back. According to the foldback line structure, two single crossover lines are reserved for each other, one single crossover line fails and does not affect the use of the other single crossover line, and the reliability and the operation efficiency of train operation are effectively improved; the technical problems that the cross crossover is unfavorable for the stability of track running and the running efficiency of the single-side platform vehicle is low in the prior art are solved.
Description
Technical Field
The invention belongs to the field of rail transit, and particularly relates to a rail transit foldback line arrangement structure.
Background
The rail transportation system is widely applied to the traffic of various cities by the characteristics of relative safety, mature technology, large transportation capacity, high speed and strong adaptability to bad weather. As urban rail passenger systems increasingly come into existence in many cities, rail terminals and vehicle segments are receiving increasing attention as an important component of urban rail passenger systems. In modern transportation, the foldback capacity is a key link of the transportation capacity of a rail line, and the sizes of the foldback capacities of an intermediate station and a terminal station directly influence the transportation capacity and the efficiency of the whole system. In practice, rail trains generally perform a turning operation by a turning line formed by crossing a crossover line.
The crossing line is generally composed of four pairs of single turnouts with the same frog number and a pair of diamond crossings, and when two tracks with opposite directions are required to be laid continuously and limited by the length of the ground, the crossing line is generally adopted to realize the turning back of the rail train. After the rail train enters the station, the rail train can directly enter the station and then exit from the opposite side rail through the crossover; or through a crossover into the contralateral station and then out. The design does not need too large construction space, and passengers can be carried on or off the rail train at a unilateral platform after the rail train stops. However, such crossover lines also have certain disadvantages, especially when higher turn-back efficiencies are required.
Actually, the diamond-shaped turnout is required to be arranged in the arrangement of the crossing crossover in the prior art, and the diamond-shaped turnout is fast in consumption due to frequent use, so that the cost of manpower and material resources for maintenance is very high, and spare parts of the turnout are increased. Meanwhile, the diamond turnout is the core of the turn-back line, and the turn-back operation of the rail train can be influenced no matter the diamond turnout is replaced during routine maintenance or failure. In addition, the crossing crossover in the prior art is turned back, and most of the crossing crossover is turned back before the station. The turning-back mode only utilizes a single-side platform to get on and off passengers, single-side is idle, and the turning-back efficiency of vehicle operation is low.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a track traffic foldback line arrangement structure, and aims to solve the technical problems that the crossing crossover is unfavorable for the stability of track operation and the operation efficiency of a single-side platform vehicle is low in the prior art by respectively arranging a single crossover at two ends of a platform.
To achieve the above object, according to one aspect of the present invention, there is provided a rail transit turn-around line arrangement structure including a track line region and a track positive line, wherein the track positive line is laid on the track line region, including two parallel first and second tracks, characterized in that,
the first single crossover line and the second single crossover line are further arranged between the first track and the second track, wherein the first single crossover line is arranged in front of the station, the second single crossover line is arranged behind the station and used for realizing the switching between the first track and the second track of a train in front of the station and/or behind the station, and the first single crossover line and the second single crossover line can be simultaneously used for turning back.
The turning-back station in the technical scheme of the invention comprises a track area, a track positive line, a station platform and two single crossover lines. The track positive line is paved on the track region, and the platforms are oppositely arranged at two sides of the track positive line. The track positive line actually comprises two pairs of tracks, a first track and a second track, to ensure the bi-directional passage of the rail train. Two single crossover lines are arranged at two ends of the platform and are arranged between the two pairs of rails, and bidirectional switching of trains on the two pairs of rails during running can be realized through the single crossover lines, namely, the trains on one pair of rails can be switched to the other pair of rails to run through the single crossover lines before or after the platform. In addition, as the two ends of the platform are provided with the single crossover lines, on one hand, the two single crossover lines can be folded back, and the two single crossover lines are mutually used for standby, so that the stability of rail traffic can be effectively improved; on the other hand, in special cases, the platform can also be allowed to turn back simultaneously on two rail trains.
Such a turn-back station is not limited to a start station and an end station, and in some cases, such a station structure may be provided in the middle of a rail transit line.
As an advantage of the technical solution of the present invention, the inclination directions of the first single crossover and the second single crossover are consistent or inconsistent, i.e. the switching directions of the trains between the first track and the second track may be consistent or inconsistent.
In general, the trains on the first track and the second track can be turned back through a single crossover, and the difference is only turning back before the station or turning back after the station. The invention is two single crossover wires in the technical scheme, which can be arranged in the same direction or in different directions. In fact, the arrangement direction of the single crossover refers to the arrangement direction of the single crossover with respect to the track and affects the process of switching the track of the train to some extent. For example, when two single crossover lines are used to switch the tracks, the trains on the same track may all enter another track from the left front along the single crossover lines or enter another track from the right front along the single crossover lines.
As one preferable aspect of the present invention, the first single crossover line and the second single crossover line are parallel. In the technical scheme of the invention, the first single crossover line and the second single crossover line are arranged in parallel. According to different requirements, the device can be arranged in a non-parallel mode, so that actual construction and operation are facilitated.
As an advantage of the solution according to the invention, the first single transition line comprises a first single turnout and a second single turnout, the main line of the first single turnout coincides with the first track, the main line of the second single turnout coincides with the second track, and the lateral line of the first single turnout is connected with the lateral line of the second single turnout, in such a way that a transition line from the first track to the second track is formed.
As an advantage of the solution according to the invention, the second single transition comprises a third single switch and a fourth single switch, the main line of the third single switch being coincident with the first track, the main line of the fourth single switch being coincident with the second track, the lateral line of the third single switch being connected to the lateral line of the fourth single switch, in such a way that a transition line from the first track to the second track is formed.
The single crossover of the technical scheme of the invention is formed by combining two single turnouts, wherein the main line of the single turnout is combined with the positive line of the track, and the side lines are connected with each other. And the main line and the lateral line of the two single turnouts forming a single crossover are respectively arranged in anti-parallel, so that the train can be stably transitioned when the track is switched. The single turnout comprises a main line and a side line, and the main line and the side line of the two single turnouts forming a single crossover are respectively parallel to each other. In particular, the main line of a single turnout is coincident with the positive line of the track, the side lines extend outwards, and if the two side lines are not parallel to each other, a longer track is required to achieve a smooth connection between the two side lines. On the one hand, the method occupies a large space and has high cost, and on the other hand, the turning-back efficiency of the rail train is affected. Therefore, the two side lines forming a single crossover line are mutually arranged in parallel, so that the cost can be saved, and the turning-back efficiency of the rail train can be improved.
As one preferable aspect of the present invention, the distance between the single crossover and the station is preferably not less than 15 meters.
The distance required for the train to get in and out of the platform is relatively long if the single crossover is set too far, and correspondingly, the safety of the train to get in and out of the platform is affected if the single crossover is too close to the platform.
As one preferable mode of the technical scheme of the invention, an outbound signal machine is arranged between the single crossover and the station, and the distance between the outbound signal machine and the station is preferably not less than 5 meters.
In general, compared with the prior art, the technical proposal designed by the invention has the following beneficial effects because two single crossover lines are arranged at the two ends of the platform:
(1) According to the foldback line structure, two single crossover lines are reserved for each other, one single crossover line fails without affecting the use of the other single crossover line, and the reliability of train operation can be effectively improved;
(2) The foldback line structure of the technical scheme is suitable for the arrangement condition of symmetrical side platforms of the tramcar foldback station. The spare parts of the turnout can be effectively reduced by optimizing the arrangement form of the foldback line, so that the whole line can only use the common turnout;
(3) According to the foldback line structure, the double-side platform is fully utilized, the situation that the platform is idle on one side when the station is foldback before the station is performed by using the crossover is avoided, and the utilization efficiency of the platform is effectively improved.
Drawings
FIG. 1 is a prior art arrangement of a return line for an urban rail transit station;
fig. 2 is an arrangement structure of a return line of an urban rail transit station according to an embodiment of the present invention.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein: 1-track positive line, 2-track region, 3-platform, 4-crossing crossover, 5-road side line and 6-single crossover.
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.
As shown in fig. 1, in the prior art, a rail train is typically turned back through a crossover when entering a platform. Specifically, the train enters the platform through the positive line of the side running rail, passengers get on and off the train on the same side, and then enter the positive line of the opposite side running rail through the crossing crossover. Because the crossing line is formed by crossing four single turnouts and a pair of diamonds, the rail train can also enter the opposite-side platform through the crossing line and then go out. The technical scheme has the defects that the utilization efficiency of the platform is very low, passengers getting on and off the platform are concentrated on the same side when people are more, and the potential safety hazard is high. In addition, this turn-back solution places a great burden on the core components of the crossover, i.e. the diamond-shaped structure connecting the four single turnouts, while the structure is costly to overhaul and maintain. When the train is overhauled or replaced, the train cannot realize turning back.
As shown in fig. 2, an embodiment of the present invention is shown. A single crossover line is respectively arranged at two sides of the turning-back platform for turning back the train. Specifically, two single turnouts are adopted to mutually cooperate to form a single crossover. The track at one side of a single turnout is combined with a track positive line to form a part of the track positive line, and the tail end of the track at the other side extends to the middle of the two track positive lines; the other single turnout is arranged along the opposite direction and is also combined with the positive line of one rail, and the tail end of the rail on the other side extends towards the middle of the positive line of the two rails and is connected with the tail end of the rail of the other single turnout. In this way, a single crossover line is formed which can turn the train back. In the technical scheme of the invention, the two sides of the turning-back platform are preferably provided with the single crossover, namely, the trains can utilize the single crossover to switch the track before entering the turning-back platform, and also can utilize the single crossover to switch the track after passing through the turning-back platform, thereby realizing the turning-back effect.
Specifically, in fig. 2, the positive rail line includes two rails arranged side by side for the train to travel in both directions. In an embodiment of the technical scheme of the invention, the track positive line is arranged between two stations, and the stations are oppositely arranged outside the track positive line. When a vehicle needs to enter a station for turning back, the vehicle can enter an opposite-side station for boarding and disembarking through a single crossover line before entering the station, and can also be switched to an opposite-side track for departure through the single crossover line before the station after boarding and disembarking of passengers are realized by the entering station. Likewise, a rail train may be first placed on a platform and then the switching of the formed rails is achieved through a single crossover after the platform.
More particularly, in the embodiment of the technical scheme of the invention, because the two ends of the platform of one station are respectively provided with one single crossover, each single crossover can realize the turning-back of the rail train, and the line can meet the turning-back requirement of the simultaneous coming vehicles at two sides. And because two single crossover lines are arranged at least at two ends of the platform, the two single crossover lines are reserved for each other, on one hand, the influence on the whole rail traffic caused by the condition that the single crossover lines are out of order or need to be overhauled can be greatly reduced, and on the other hand, the stability of the rail traffic operation is further enhanced.
The distance between the turnout and the station is different according to the different train detection schemes. If the train detection adopts a track circuit scheme, the distance from the turnout center to the effective platform end is not suitable to be less than 25m from the front end of the turnout in view of inclusion; if the train detection adopts an axle counting scheme, the distance from the turnout center to the end part of the effective platform is not suitable to be less than 15m at the front end of the turnout; the distance from the turnout alarm mark or the outbound signal machine to the end part of the effective platform is not less than 5m. Furthermore, the type of the turnout also has a certain influence on the distance between the single crossover and the station. In a preferred embodiment, a 6-switch and track circuit detection scheme is adopted, and the distance between the switch center at the front end of the switch and the effective platform edge is not less than 25m.
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 (5)
1. A track traffic turn-back line arrangement structure, which comprises a track line area and a track positive line, wherein the track positive line is paved on the track line area and comprises two parallel first tracks and second tracks, and is characterized in that,
a first single crossover and a second single crossover are also arranged between the first rail and the second rail, wherein the first single crossover is arranged in front of the station, the second single crossover is arranged behind the station and is used for realizing the switching between the first rail and the second rail before and/or after the station of the train, and can be simultaneously used for realizing the turning back of the train
The first single crossover comprises a first single turnout and a second single turnout, the main line of the first single turnout is coincident with the first track, the main line of the second single turnout is coincident with the second track, and the side line of the first single turnout is connected with the side line of the second single turnout, so that a crossover line from the first track to the second track is formed;
the second single transition line comprises a third single turnout and a fourth single turnout, the main line of the third single turnout is coincident with the first track, the main line of the fourth single turnout is coincident with the second track, and the side line of the third single turnout is connected with the side line of the fourth single turnout, so that a transition line from the first track to the second track is formed;
and the main line and the lateral line of the two single turnout in each single crossover are respectively arranged in anti-parallel.
2. The rail transit turn-back line arrangement structure according to claim 1, wherein the first single-crossover and the second single-crossover are identical or not identical in inclination direction, i.e., a switching direction of a train between the first rail and the second rail may be identical or not identical.
3. The rail transit turn-back line arrangement of claim 1, wherein the first single crossover and the second single crossover are parallel.
4. A rail transit return line arrangement according to claim 1 or 3, wherein the distance between the single crossover and the station is not less than 15 metres.
5. The rail transit turn-back line arrangement structure according to any one of claims 1 to 3, wherein an outbound annunciator is further arranged between the single transit line and the station, and the distance between the outbound annunciator and the station is not less than 5 meters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710851902.XA CN107585166B (en) | 2017-09-19 | 2017-09-19 | Rail transit turn-back line arrangement structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710851902.XA CN107585166B (en) | 2017-09-19 | 2017-09-19 | Rail transit turn-back line arrangement structure |
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| CN108382402B (en) * | 2018-03-12 | 2023-12-29 | 中铁第四勘察设计院集团有限公司 | Intelligent tramcar head and tail end charging station system structure |
| CN109285345A (en) * | 2018-09-06 | 2019-01-29 | 杭州飞遁科技有限公司 | A kind of traffic circulation network failure allocation processing method |
| CN109131361A (en) * | 2018-09-14 | 2019-01-04 | 中铁第四勘察设计院集团有限公司 | A kind of bulb-type intelligence rail is turned back cable architecture |
| CN109131363B (en) * | 2018-09-14 | 2024-01-16 | 中铁第四勘察设计院集团有限公司 | Intelligent rail train parking system |
| CN109131364B (en) * | 2018-09-21 | 2023-09-26 | 中铁第四勘察设计院集团有限公司 | Intelligent track line structure system |
| CN109339108A (en) * | 2018-10-26 | 2019-02-15 | 中铁第四勘察设计院集团有限公司 | A kind of section of track well system based on subway station list branch-cut bridge |
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