Method for realizing arrangement of high-speed rail and maglev traffic combined track beam bridge

Abstract

The invention provides a method for realizing arrangement of a high-speed rail and maglev traffic combined track beam bridge, which comprises the following steps of: arranging a box beam, of which the top is provided with a high-speed railway track for high-speed rail vehicles to run, and the interior is provided with a maglev traffic track beam for maglev traffic vehicles to run; the box chamber is arranged in the box girder, and the extending direction of the box chamber is consistent with the extending direction of the box girder; the multiple enclosure structures are arranged in the box chamber at intervals in the extending direction of the box chamber; by arranging the box girder, arranging the high-speed railway track at the top and arranging the maglev traffic track beam in the box girder, a high-speed railway vehicle and a maglev traffic vehicle can run on the same box girder together, and through the inner wall of the box chamber and the enclosure structure, the energy consumption chamber is formed by the outer wall of the enclosure structure and the inner wall of the box chamber. The aerodynamic effect caused when the magnetic levitation traffic vehicle runs in the box girder is reduced, the generation and influence of noise are reduced, and the stability and safety of the box girder are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of rail transportation, and in particular to a method for realizing the setting of a combined rail beam bridge for high-speed rail and maglev transportation. Background Art

[0002] Most existing railway box girders only provide a driving channel for high-speed rail vehicles or maglev vehicles. For example, patent number CN105714668A discloses a multifunctional concrete box girder bridge for double-deck traffic. The concrete box girder bridge is composed of several chambers, and the impact of the double-deck traffic setting on the box girder cannot be considered. Patent number CN109024104A discloses a single-box double-chamber elevated maglev traffic with a closed web. The single-box double-chamber elevated disclosed in this patent only supports the operation of maglev vehicles inside the box girder. In this maglev transportation system, since the inner wall of the box girder is a smooth structure, it can only be used to ensure that the maglev vehicles inside the box girder are not disturbed by complex external conditions such as rain, snow and strong wind. However, maglev vehicles are prone to generate large noise and flow fields during high-speed driving. It is not easy to absorb and block noise and flow fields by relying solely on the smooth inner wall of the box girder. Therefore, the noise and flow fields generated by high-speed maglev vehicles have a greater impact on the box girder and the surrounding area. Patent No. CN106522082A discloses a fully enclosed box girder for railway box driving, in which the railway train runs. In this railway transportation system, the box girder only supports the railway train running, and the box girder is mainly used to ensure that the railway train is not affected by strong winds during operation. Although the noise and flow field generated by the railway train in the closed box can be partially absorbed and blocked by the inner wall of the concrete box girder, the noise and flow field generated by the railway train will still have a greater impact on the box girder and the outside world.

[0003] At the same time, the inner wall of the existing enclosed maglev box beam that uses the box beam for operation has irregular edges and corners, which affect the air flow field when the maglev vehicle is traveling in the enclosed box. In addition, the enclosed structure of the box beam is not conducive to the circulation of air, so that the air flow field formed when the maglev vehicle is traveling in the enclosed box beam flows along the body of the vehicle, forming air disturbance to the maglev vehicle. All of the above will affect the stability and safety of the maglev vehicle. Summary of the invention

[0004] The object of the present invention is to provide a method for setting up a high-speed rail and maglev combined rail beam bridge, which can enable high-speed rail vehicles and maglev vehicles to travel on a box beam at the same time, and reduce the aerodynamic effect caused by the maglev vehicle when traveling in the box beam through the inner wall and the enclosure structure of the box chamber, reduce the generation and influence of noise, and ensure the stability and safety of the box beam;

[0005] The present invention provides a method for setting a combined track beam bridge for high-speed rail and maglev transportation, comprising:

[0006] The line shape of the box girder is the same as that of the maglev transportation track beam, and the line shape of the top high-speed railway track is the same as that of the maglev transportation track beam; on different channels of the box girder, the superelevation of the high-speed railway track is different from the superelevation of the maglev transportation track beam, the superelevation of the high-speed railway track flat curve is set according to the speed of the high-speed railway vehicle, and the superelevation of the flat curve of the maglev transportation track beam is set according to the speed of the maglev transportation vehicle; the superelevation at the support position of the box girder is the average superelevation of the high-speed railway channel and the maglev transportation channel at the mid-span position; the box girder achieves force balance among the box girder, the high-speed railway vehicle and the maglev transportation vehicle by setting a lateral pre-eccentricity.

[0007] In a preferred embodiment, the vehicles on the high-speed railway track and the maglev transportation track beam maintain force balance at any position of the box beam.

[0008] In a preferred embodiment, at least one box girder is provided along the line. If multiple box girders are provided, a flexible sealing device is provided between two adjacent box girders.

[0009] In a preferred embodiment, the maglev transportation track beam is provided with a plurality of streamlined airflow holes at horizontal intervals along its extension direction.

[0010] In a preferred embodiment, the bottom of the box beam is provided with piers corresponding to the number and positions of the box chambers.

[0011] In a preferred embodiment, the high-speed rail vehicle, the maglev transportation vehicle and the pier correspond to each other, and the eccentric distance of the high-speed rail vehicle is e 高铁 , the eccentric distance of the maglev vehicle is e 磁浮 , e 高铁 and e 磁浮 Both are 0.5m~1m.

[0012] In a preferred embodiment, a branch road can be connected to the box girder, and the starting end and the ending end of the branch road are connected at intervals on the same side of the box girder. The branch road is another separate box girder, the high-speed railway track is arranged on the top of the box girder on one side, and the maglev transportation track beam is arranged inside the box girder on the other side. When the high-speed railway vehicle and the maglev transportation vehicle travel to the starting end of the branch road, they travel separately on the two box girders, and when they travel to the ending end of the branch road, they reunite and travel on the same box girder.

[0013] The technical solution of the present invention is to provide a box beam with a high-speed railway track on the top and a maglev transportation track beam inside, so that high-speed railway vehicles and maglev transportation vehicles can travel together on the same box beam, and a combined transportation method that allows high-speed railway vehicles and maglev transportation vehicles to travel on the box beam at the same time can be realized. Through the inner wall and the enclosure structure of the box chamber, the aerodynamic effect caused by the maglev transportation vehicle when traveling in the box beam is reduced, the generation and impact of noise are reduced, and the stability and safety of the box beam are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the cross section of the dual-system track beam for high-speed rail and maglev transportation;

[0016] Figure 2 It is a side sectional view of the chamber;

[0017] Figure 3 It is a schematic diagram of the principle of the flexible sealing device;

[0018] Figure 4 It is the force transmission principle diagram of double-column piers of combined rail beam bridge for high-speed rail and maglev transportation;

[0019] Figure 5 Set up force diagrams for high-speed rail and maglev combined rail bridges;

[0020] Figure 6 It is a cross-section of a streamlined open channel combined rail beam bridge with platform support;

[0021] Figure 7 It is a cross-sectional view of a combined rail beam bridge with a tunnel-shaped open channel;

[0022] Figure 8 Schematic diagram of the combined rail beam bridge transportation system for high-speed rail and maglev transportation

[0023] Fig. 9 This is a partial enlarged view of the combined rail beam bridge transportation system for high-speed rail and maglev transportation;

[0024] Fig.10 It is a cross-section diagram of the simply supported system of the combined rail beam bridge transportation system for high-speed rail and maglev transportation;

[0025] Fig.11Cross-section diagram of the rigid frame system of the combined rail beam bridge transportation system for high-speed rail and maglev transportation

[0026] Fig.12 A diagram of a combined rail beam bridge for high-speed rail and maglev transportation passing through a tunnel;

[0027] Fig.13 This is a diagram of a combined rail beam bridge for high-speed rail and maglev transportation passing through a station;

[0028] Fig.14 A diagram of a combined rail beam bridge for high-speed rail and maglev transportation crossing a river;

[0029] In the figure: 1—high-speed rail vehicle; 2—maglev transportation vehicle; 3—box beam; 4—high-speed rail track; 5—maglev transportation track beam; 6—enclosure structure; 7—box room; 8—energy consumption room; 9—door curtain; 10—bottom curtain; YL-1—pier column; YL-2—flexible sealing device; YL-3—track plate; YL-4—box beam support; YL-5—box beam; YL-6—cap beam; YL-7—track beam; e 高铁 —The eccentric distance between the centroid of the high-speed rail vehicle and the centerline of the pier; e 磁浮 —Eccentricity between the centroid of the maglev vehicle and the centerline of the pier; F 高铁1 —High-speed rail vehicle load; F 高铁2 —Load of high-speed railway vehicle on the opposite side; F 磁浮1 —Maglev vehicle load; F 磁浮2 — load of the maglev vehicle on the opposite side; F 墩柱1 —Pier column force; F 墩柱2 —Force acting on the side piers;

[0030] as1-1—maglev transportation vehicle; as1-2—high-speed rail vehicle; as1-3—maglev transportation track beam; as1-4—high-speed rail track; as1-5—platform; as1-6—streamlined small end; as1-7—rounded large end; as1-8—support; as1-9—cap beam; as1-10—pier column;

[0031] bs2-1—maglev transportation vehicle; bs2-2—high-speed rail vehicle; bs2-3—maglev transportation track beam; bs2-4—high-speed rail track; bs2-5—tunnel-shaped small end; bs2-6—round large end; bs2-7—support; bs2-8—cap beam; bs2-9—pier column;

[0032] 3a—box beam; 3b—high-speed railway track; 3c—maglev transportation track beam; 3d—box chamber; 3e—pier column; 3f—flexible sealing device; 3g—enclosing structure; 3h—streamlined air flow hole; 3i—cap beam; 3j—hinge support; 3k—rolling support; 3m—high-speed railway vehicle; 3q—maglev transportation vehicle; 3n—pier beam consolidation; 3o—expansion joint;

[0033] 4a—box girder; 4b—track slab; 4c—maglev track girder; 4d—tunnel; 4e—pier; 4f—flexible enclosed device; 4g—cap beam; 4h—box chamber; 5a—box girder; 5b—track slab; 5c—maglev track girder; 5d—station; 5e—pier; 5f—flexible enclosed device; 5g—cap beam; 5h—box chamber; 6a—box girder; 6b—track slab; 6c—maglev track girder; 6d—river; 6e—pier; 6f—flexible enclosed device; 6g—cap beam; 6h—box chamber.

[0034] α—slope of the retaining structure; Δh—centroid position deviation; S1—vertical distance between the large end and the small end; S2—eccentric distance. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The method for setting up a combined track beam bridge for high-speed rail and maglev transportation described in the present invention is as follows: Figure 1 As shown, the box beam 3 has a cavity inside, is open at both ends, has a high-speed railway track 4 for the high-speed railway vehicle 1 to travel on the top, and has a maglev transportation track beam 5 for the maglev transportation vehicle 2 to travel on the inside, and the high-speed railway vehicle 1 and the maglev transportation vehicle 2 travel on the box beam 3 at the same time; the high-speed railway track 4 or the maglev transportation track beam 5 can be separately arranged on the box beam 3, or the high-speed railway track 4 and the maglev transportation track beam 5 can be arranged at the same time;

[0037] like Figure 2 As shown, the box chamber 7 has a cavity inside and is open at both ends. It is arranged in the box beam 3 and its extension direction is consistent with the extension direction of the box beam 3;

[0038] A protective structure 6 is arranged outside the maglev transportation track beam 5, and a plurality of protective structures 6 are arranged in the box chamber 7 at intervals along the extension direction of the box chamber 7;

[0039] The energy dissipation chamber 8 is composed of the outer wall of the enclosure structure 6 and the inner wall of the box chamber 7. When the maglev transportation vehicle 2 passes through the enclosure structure 6, the airflow and noise generated by the high-speed vehicle form inflow and backflow in the energy dissipation chamber 8, which interfere and collide with each other, so as to consume the airflow and noise of the high-speed vehicle.

[0040] At least one box chamber 7 is provided in the box girder 3. Generally, one box chamber 7 or two box chambers 7 are provided in a box girder 3. A box chamber 7 is a single-box single-chamber, and two box chambers 7 are a single-box double-chamber. The number and positions of the high-speed railway tracks 4 arranged on the top of the box girder 3 correspond to the box chambers 7. That is to say, a high-speed railway track 4 is provided above each box chamber 7. One high-speed railway track 4 is provided above the single-box single chamber, and two high-speed railway tracks 4 are provided above the single-box double chamber. This fully utilizes the space while ensuring that each high-speed railway track 4 is supported by a box chamber 7 underneath.

[0041] At least one box girder 3 is provided along the line. If multiple box girder 3 are provided, a flexible sealing device YL-2 is provided between two adjacent box girder 3. The flexible sealing device YL-2 is flat or corrugated and does not restrict the rotation and deformation of the box girder 3.

[0042] The enclosure structure 6 is trumpet-shaped, and its two ends perpendicular to the driving direction are respectively a small end and a large end. Vehicles enter from the small end and exit from the large end. Its side walls are curved.

[0043] The large end of the enclosure structure 6 is connected to the inner wall of the box chamber 7 through an elastic bottom curtain 10, and a door curtain 9 is provided on the inner side of the small end to contact the high-speed vehicle. During installation, multiple enclosure structures 6 are connected in series along the traveling direction of the maglev vehicle 2, with the small end first and then the large end, and the opening direction of the enclosure structure 6 is consistent. The door curtain 9 is fixed at the front edge of the small end of the enclosure structure 6, and the bottom curtain 10 is fixed at the large end of the enclosure structure 6 and connected to the inner wall of the box chamber 7; a notch is provided at the bottom of the enclosure structure 6 along the length direction of the enclosure structure 6, and both sides of the notch are elastically connected to the maglev track beam 5 or the evacuation channels arranged on both sides of the maglev track beam 5, and the elastic connection is connected through the bottom curtain 10. The bottom curtain 10 can reduce the effect of air leakage in the chamber. The bottom curtain 10 is an elastic material in a folded shape to ensure that the main body of the enclosure structure 6 can expand and deform.

[0044] The enclosure structures 6 are arranged at variable intervals or equal intervals, and are arranged from sparse to dense along the vehicle travel direction, with a larger distance at the entrance and a closer distance at the exit, and can be arranged at equal intervals in the middle section; the distance between the large end and the small end of the enclosure structure 6 is S1, and S1≥1m. The distance between adjacent enclosure structures 6 is C, and C satisfies the restriction condition: 0.5m<C<the length of the maglev transportation vehicle 2.

[0045] The maglev transportation track beam 5 is provided with a plurality of streamlined airflow holes at intervals horizontally along its extension direction, thereby ensuring the driving stability and safety of the maglev transportation vehicle 2 .

[0046] The bottom of the box beam 3 is provided with piers YL-1 corresponding to the number and position of the box chambers 7. The piers YL-1 are used to support the box beam 3. The double chambers use two piers, which are more stable. The high-speed rail vehicle 1, the maglev transportation vehicle 2 and the piers YL-1 correspond to each other. The eccentric distance of the high-speed rail vehicle 1 is e 高铁 , the eccentric distance of the maglev vehicle 2 is e 磁浮 , e 高铁 and e 磁浮 The center of pier YL-2 is taken as the base point, and the high-speed rail vehicle 1 and the maglev vehicle 2 are arranged on the same axis as far as possible, but there will inevitably be errors during construction, and the error range is 0.5m to 1m.

[0047] A branch road can be connected to the box girder 3, and the starting end and the ending end of the branch road are connected at intervals on the same side of the box girder 3, the branch road and the box girder 3 are located in the same horizontal plane, the box girder 3 and the branch road form a Y-shaped fork and then reunite, the branch road is another separate box girder 3, the high-speed railway track 4 is arranged on the top of the box girder 3 on one side, and the maglev transportation track beam 5 runs inside the box girder 3 on the other side, that is, two beams and two tracks, when the high-speed railway vehicle 1 and the maglev transportation vehicle 2 travel to the starting end of the branch road, they travel separately on the two box girder 3, and when they travel to the ending end of the branch road, they reunite and travel on the same box girder 3. The separation of the high-speed rail vehicle 1 and the maglev vehicle 2 is conducive to reducing the weight of the box girder 3 and ensuring the safety of the line through tunnels, stations, rivers and the like. After passing through high-mountain tunnels, stations and large rivers, the separated single-box single-channel box girder 3 is re-merged into a single-box double-channel box girder 3, effectively solving the problem of terrain restrictions on the high-speed rail vehicle 1 and the maglev combined transportation system when passing through high-mountain tunnels, stations and large rivers.

[0048] In the method for setting up a combined rail beam bridge for high-speed rail and maglev transportation described in the present invention, an independent flexible sealing device is provided at the joint of two adjacent box beams, such as Figure 3 As shown, Figure 3 In the figure: YL-2 is a flexible closed device, YL-3 is a track plate, YL-4 is a box beam support, YL-5 is a box beam, and YL-6 is a cap beam. The flexible closed device YL-2 is anchored to the box beam by bolts and is sealed and connected to the two box chambers of the box beam. When a maglev vehicle passes through the joint of two adjacent box beams, the vehicle squeezes the surrounding air, and the resulting air flow field will cause the flexible closed device to expand; when the maglev vehicle leaves the joint of two adjacent box beams, the air around the vehicle contracts, and the resulting air flow field will cause the flexible closed device to contract. The "expansion and contraction" of the flexible closed device dissipates the aerodynamic energy generated by the maglev vehicle running at the joint, which is recorded as E 内, thereby ensuring the driving stability and safety of the maglev transportation vehicle. The flexible sealing device does not restrict the rotation and deformation of the box girder, and can effectively prevent the vibration damage of the box girder caused by the vehicle running.

[0049] In the method for realizing the combined transportation of high-speed railway and maglev transportation described in the present invention, double-column pier support is adopted in the double-track box girder of high-speed railway and maglev transportation, such as Figure 4 As shown, Figure 4 In the middle: YL-3 is the track plate, YL-4 is the box beam support, YL-5 is the box beam, YL-6 is the cap beam, and YL-7 is the track beam. When the high-speed rail vehicle and the maglev vehicle travel on the box beam surface and the box chamber respectively, the high-speed rail vehicle load is recorded as F 高铁1 and F 高铁2 , the load of the maglev vehicle is denoted as F 磁浮1 and F 磁浮2 , the force acting on the double column pier is recorded as F 墩柱1 and F 墩柱2 Therefore, the force exerted by the single-track high-speed rail vehicle load and the maglev traffic vehicle load on the axis position of one side pier is

[0050] F1=F 高铁1 +F 磁浮1

[0051] F2=F 高铁2 +F 磁浮2

[0052] Among them, the center line of the high-speed railway and the center line of the maglev transportation are on the same axis as the center line of the pier, that is, the force F 高铁1 and F 磁浮1 The position and F 墩柱1 The positions are close to the same axis, and the force F 高铁2 and F 磁浮2 The position and F 墩柱2 The positions of the piers are close to the same axis, which reduces the adverse effects of eccentricity on the structural stress and ensures that the loads of high-speed rail vehicles and maglev vehicles are transmitted to the axial position of the pier column along the center line. The overall anti-overturning capacity of the high-speed rail and maglev combined transportation system is guaranteed, the system stress is clear, and the safety of the system is greatly improved.

[0053] In the method for setting up a high-speed railway and maglev transportation combined track beam bridge described in the present invention, the box beam line shape is the same as the maglev transportation track beam line shape and the top high-speed railway track line shape, and a transverse pre-eccentricity distance of e' is set at the cross-sectional position of the high-speed railway and maglev transportation double-line box beam. Figure 5 As shown in the figure, when the high-speed rail vehicle and the maglev vehicle are running on the box girder surface and the box chamber respectively, the double-track box girder load at this time is recorded as G 箱 , the high-speed rail vehicle load is recorded as G i(i=1~2), the load of the maglev vehicle is G i (i=3~4), the superelevation of the high-speed railway channel at the bottom of the mid-span is recorded as i1, and the superelevation of the maglev transportation channel at the bottom of the mid-span is recorded as i2. Then the superelevation i at the box girder support position is 箱 for:

[0054]

[0055] Therefore, when high-speed rail vehicles and maglev vehicles act on the double-track box girder at rest, the box girder achieves force balance by setting the lateral pre-eccentricity:

[0056] The force balance for high-speed rail vehicles is (i is 1-2):

[0057] f i =G i sini1

[0058] F Ni =G i cosi1

[0059] The force balance for the maglev vehicle is (i is 3-4):

[0060] f i =G i sini2

[0061] F Ni =G i cosi2

[0062] The force balance for the high-speed rail-maglev-box girder system is:

[0063]

[0064] The moment balance achieved at this time is:

[0065]

[0066] When high-speed rail vehicles and maglev vehicles travel on double-track box girders, the box girders achieve force balance through transverse pre-eccentricity e (i is 1 to 4):

[0067] For high-speed rail-maglev-box girder system:

[0068]

[0069] The moment balance achieved at this time is:

[0070]

[0071] The setting of the combined rail beam bridge for high-speed rail and maglev transportation is realized by adjusting different superelevations and lateral pre-eccentricity, ensuring the stability and balance of the rail beam bridge.

[0072] In a method for realizing combined transportation of high-speed rail and maglev transportation described in the present invention, when high-speed rail vehicles and maglev transportation vehicles need to pass through mountain tunnels, large rivers and station buildings, due to terrain restrictions, it is necessary to separate the high-speed rail vehicle passage and the maglev transportation vehicle passage to ensure the safety of the combined transportation system. Therefore, before passing through the restricted terrain, the box girder is transformed from one beam and two tracks, that is, the same box girder runs high-speed rail vehicles and maglev transportation vehicles at the same time, to two beams and two tracks, that is, the high-speed rail vehicles and maglev transportation vehicles run on separate different box girders. After passing through the restricted terrain, the box girder is transformed into the form of one beam and two tracks, ensuring that the combined transportation system can smoothly pass through the restricted terrain while reducing the area occupied by the channel.

[0073] The terms used in the present invention are as follows:

[0074] "Box girder maglev passage" refers to the operating space of maglev transportation vehicles inside the box girder.

[0075] "Enclosure structure" refers to the curved structure arranged longitudinally along the box girder maglev passage. This device can effectively consume the changes in air and sound fields generated by the passage of maglev vehicles through the box girder.

[0076] "Flexible sealing device" refers to a device used for sealing the beam seams between two adjacent box girders. The sealing device has the characteristic of not restricting the rotation and deformation of the box girder.

[0077] "Energy consumption chamber" refers to the cavity space formed by the enclosing structure and the box-girder maglev passage. The principle is that the air field and sound field change due to the maglev vehicles entering the box-girder maglev passage. The backflow generated by the maglev vehicles at the moment before entering and the inflow generated at the moment after entering meet, collide and interfere in the energy consumption chamber, ultimately achieving the purpose of consuming the air field and sound field of the maglev vehicles.

[0078] "One beam, two tracks" means that the high-speed rail channel and the maglev transportation channel run together on the same box girder.

[0079] "Two beams and two tracks" means that the high-speed rail passage and the maglev transportation passage run on two independent box beams, that is, the high-speed rail passage runs on the upper part of one box beam, and the maglev transportation passage runs inside the other box beam.

[0080] "Streamlined" refers to an irregular circle or an incomplete circle.

[0081] "Tunnel type" refers to a rectangle with an open bottom and a curved top.

[0082] In a method for setting up a combined rail beam bridge for high-speed rail and maglev transportation described in the present invention, streamlined airflow holes are arranged at intervals along the longitudinal direction of the maglev transportation rail beam, which stabilizes the flow direction of the internal airflow when the maglev transportation vehicle travels in the combined transportation box beam, and ensures the stability and safety of driving inside the box. In order to meet the requirements of maglev transportation vehicles traveling in the combined transportation box beam maglev passage, the box chamber height of the combined transportation box beam is increased, that is, the height of the maglev transportation vehicle is increased, the ratio of the cross-section of the maglev transportation vehicle to the cross-sectional area of ​​the box beam maglev passage is reduced, and the aerodynamic effect caused by the maglev transportation vehicle traveling in the box beam maglev passage is controlled. At the same time, the maglev transportation rail beam in the combined transportation box beam maglev passage has a larger beam height, so that the maglev transportation vehicle is located near the centroid of the small end of the enclosure structure.

[0083] In a method for setting up a combined rail beam bridge for high-speed rail and maglev transportation described in the present invention, a protective structure is arranged inside a box chamber of a combined transportation box beam along the direction of a maglev passage, and an energy dissipation chamber is formed by the protective structure and the inner wall of the box chamber. As the maglev transportation vehicle enters the box chamber, the airflow interacts with the protective structure in the energy dissipation chamber, and energy is gradually consumed. The energy dissipated here is recorded as E 耗能室 , which greatly reduces the impact of airflow on vehicles in the combined traffic box beam box room, ensuring the driving stability and safety of the vehicles.

[0084] The above describes the working principle and implementation effect of the enclosed maglev transportation structure using box beams. It should be noted that the above working principle will not be repeated in the following embodiments.

[0085] Example

[0086] Example 1 Streamlined open channel combined rail beam bridge section with platform support

[0087] Combination Figure 6 The streamlined open channel combined rail beam bridge section with platform support in this embodiment is demonstrated. The transverse pre-eccentricity distance e1 is proposed to be set to 50mm at the cross-sectional position of the high-speed railway and maglev transportation double-line box beam. In the direction of the combined rail beam bridge, the line shape of the box beam is the same as the line shape of the maglev transportation track beam and the top high-speed railway track. The superelevation of the high-speed railway channel at the bottom of the mid-span is 2%, and the superelevation of the maglev transportation channel at the bottom of the mid-span is 1%. At this time, the superelevation at the box beam support position is set to 1.5%. Figure 6The streamlined open channel combined rail beam bridge section with platform support includes a rail beam as1-3 on which a maglev vehicle as1-1 travels in double lines inside a box beam, a rail beam as1-4 on which a high-speed rail vehicle as1-2 travels in double lines on a box beam at the same time, a streamlined open channel as1-6 at the small end of the enclosure structure, a circular open channel as1-7 at the large end that fits the box chamber, a device length of 2 to 30 m, a vertical distance S1 between the large end and the small end that satisfies S1 ≥ 1 m, and a enclosure structure fixed on a platform as1-5 on the inner wall of the box, wherein the platform as1-5 has the function of evacuating passengers and providing an inspection channel, a cap beam as1-9 is connected to a pier as1-10, and supports the upper box beam structure through a support as1-8, and after the arrangement is completed, Figure 6 As shown, the centroids of the high-speed rail vehicle as1-2, the maglev vehicle as1-1 and the lower pier as1-10 are close to being on the same axis, and the eccentric distance is S2, where S2 = 0.5 to 1 m.

[0088] Example 2 Tunnel-shaped open channel combined track beam bridge section

[0089] Combination Figure 7 The cross section of the combined rail beam bridge with a tunnel-shaped open channel in this embodiment is demonstrated. The transverse pre-eccentricity distance e2 is set to 50 mm at the cross-sectional position of the high-speed railway and maglev transportation double-line box beam. In the direction of the combined rail beam bridge, the line shape of the box beam is the same as the line shape of the maglev transportation track beam and the line shape of the top high-speed railway track. The superelevation of the high-speed railway channel at the bottom of the mid-span is 2%, and the superelevation of the maglev transportation channel at the bottom of the mid-span is 1%. At this time, the superelevation at the box beam support position is set to 1.5%. Figure 7 The tunnel-shaped open channel combined rail beam bridge section includes a rail beam bs2-3 on which a maglev vehicle bs2-1 travels in double lines inside a box beam, a rail bs2-4 on which a high-speed rail vehicle bs2-2 travels in double lines on a box beam at the same time, a small-end open channel bs2-5 of the enclosure structure is in a tunnel shape, and a large-end open channel bs2-6 is streamlined in affixed with the box chamber. The length of the device is 2 to 30 m, and the vertical distance S1 between the large-end and the small-end satisfies S1 ≥ 1 m. The enclosure structure is fixed on the rail beam bs2-3, the cap beam bs2-8 is connected to the pier bs2-9, and the upper box beam structure is supported by the support bs2-7. After the arrangement is completed, Figure 7 The centroids of the high-speed rail vehicle bs2-2, the maglev vehicle bs2-1 and the lower pier bs2-9 are close to being on the same axis, and the eccentric distance is S2, where S2 = 0.5 to 1 m.

[0090] Example 3 High-speed rail and maglev combined rail beam bridge transportation system

[0091] Combination Figure 8 to Figure 11The high-speed rail and maglev combined rail beam bridge transportation system based on the present invention is demonstrated. It is planned to build a box beam line curve section with a total length of 5km, and the length of each box beam is 30m. The design speed of high-speed rail vehicles is 300-400km / h, and the design speed of high-speed maglev transportation vehicles is 600-1000km / h. The box beam 3a is supported on the pier 3e, the high-speed railway track 3b is laid on the upper part of the box beam 3a, and the high-speed railway vehicle runs on the high-speed railway track 3b. The maglev transportation track beam 3c is laid in the box chamber 3d, and the maglev transportation vehicle runs on the maglev transportation track beam 3c. The enclosure structure 3g can be arranged at equal intervals or variable intervals along the line. Since the driving directions of the maglev transportation vehicles in the two independent boxes are opposite, the arrangement directions of the enclosure structures 3g in the boxes are opposite, and the enclosure structures 3g are arranged from sparse to dense along the driving direction of the maglev transportation vehicles in the box. The inner wall of the cross section of the box chamber 3d coincides with the large end of the enclosure structure 3g, with an angle of α, and the slope α satisfies 0°≤α≤60°, and the centroid position of the maglev transportation vehicle is offset from the centroid position of the enclosure structure 3g, and the offset distance Δh satisfies 0m≤Δh≤5m, which can effectively block the airflow changes caused by the driving of the maglev transportation vehicle. Streamlined airflow holes 3h are opened on the outer side of the maglev transportation track beam 3c, and the box beam 3a has the same line shape as the high-speed railway track 3b and the maglev transportation track beam 3c. The box beam 3a is erected on the cap beam 3i, and the cap beam 3i is connected to the pier 3e. The joints of the two adjacent box beams 3a are sealed and connected by a flexible sealing device 3f. The flexible sealing device 3f is anchored at the end of the box beam 3a by locking bolts, and a flat plate or corrugated plate structure is used to make the magnetic levitation passages of the two adjacent box beams closed and unobstructed, ensuring the driving stability of high-speed railway vehicles and maglev transportation vehicles. At the same time, the enclosure structure 3g of each box girder is sparsely arranged at the entrance section of the box chamber, and is densely arranged at the exit section of the box chamber, which effectively dissipates the aerodynamic effect caused by the movement of maglev vehicles, greatly reduces the aerodynamic effect caused by the maglev vehicles squeezing the air in front of them when they are traveling in the box girder maglev passage, and also protects the flexible sealing device. Different types of enclosure structures 3g are also very effective in reducing the aerodynamic effect caused by the maglev vehicles squeezing the air in front of them when they are traveling in the box girder maglev passage, and the noise reduction optimization effect reaches 40% to 55%.

[0092] In the combined rail beam bridge transportation system of high-speed rail and maglev transportation, the whole line can adopt a simply supported system, that is, the two ends of the box beam support are hinged at one end 3j and rolling support 3k at the other end, and the two adjacent box beams are connected by a flexible sealing device 3f, or a continuous rigid frame system is adopted, that is, the pier-beam consolidation 3n is formed at the position where the box beam and the pier column are combined, and every three-span box beam is regarded as a unit, and there is an expansion joint 3o between each unit, and finally an overall line is formed.

[0093] Example 4 High-speed rail and maglev combined rail beam bridge passing through a tunnel

[0094] Combination Fig.12 The high-speed rail and maglev combined rail beam bridge based on the present invention passing through a tunnel is demonstrated. It is planned to build a box beam line with a total length of 5km through a curve section, and the box beam line needs to pass through a tunnel 4d in the middle. The box beam 4a is supported on the pier 4e, the high-speed railway track 4b is laid on the upper part of the box beam 4a, and the maglev rail beam 4c is laid in the box chamber 4h. When the combined box beam needs to pass through the mountain tunnel 4d, the box beam can maintain the combination of one beam and two tracks and pass through the mountain tunnel 4d as a whole, or at a distance of 1km from the entrance of the tunnel 4d, the box beam adopts an open scissor-shaped bifurcation change, and the high-speed rail vehicle travels on the upper part of the open scissor-shaped box beam, and the maglev vehicle travels inside the open scissor-shaped box beam. The high-speed rail passage The maglev transportation passage forks at different elevations, and finally separates into two beams and two tracks of a single-line single-channel box beam, and then enters tunnel 4d. The bottom elevation of tunnel 4d is consistent with the top elevation of the box beam of the high-speed rail passage. The internal cross-sectional form of the box chamber of the maglev transportation passage is consistent with the cross-sectional form of the tunnel. At a distance of 1km from the exit of tunnel 4d, the high-speed rail passage and the maglev passage are re-merged in the form of one beam and two tracks on the same span of the box beam, forming a combined transportation system in which high-speed rail trains and maglev transportation vehicles run simultaneously. By transforming one beam and two tracks into two beams and two tracks, the limitation of the tunnel section size is avoided, the driving limit of high-speed rail trains and maglev transportation vehicles is guaranteed, and the construction convenience is ensured.

[0095] Example 5 High-speed rail and maglev combined rail beam bridge passing through the station

[0096] Combination Fig.13 The high-speed rail and maglev combined rail beam bridge according to the present invention passing through a station is demonstrated. It is planned to build a box beam line with a total length of 5km, and the box beam line passes through a station 5d in the middle. The box girder 5a is supported on the pier 5e, the high-speed railway track 5b is laid on the upper part of the box girder 5a, and the maglev transportation track beam 5c is laid in the box chamber 5h. When the combined box girder needs to pass through the station 5d, the box girder can maintain the combination form of one beam and two tracks and pass through the station 5d as a whole, or at a distance of 1km from the entrance of the station 5d, the box girder adopts an open scissors-shaped bifurcation change, the high-speed railway vehicle travels on the upper part of the box girder with the open scissors-shaped change, and the maglev transportation vehicle travels inside the box girder with the open scissors-shaped change. The high-speed railway passage and the maglev transportation passage are bifurcated at different elevations, and finally separated into two beams and two tracks of a single-line single-channel box girder, and then enter the station 5d. The elevation of the bottom of the station is consistent with the elevation of the top of the box girder of the high-speed railway passage. At a distance of 1km from the exit of the station 5d, the high-speed railway passage and the maglev passage are re-merged in the form of one beam and two tracks on the same span of the box girder, forming a combined transportation system in which high-speed railway trains and maglev transportation vehicles run simultaneously. By converting one beam and two tracks into two beams and two tracks, the limitation of station size is avoided, the driving limits of high-speed trains and maglev vehicles are guaranteed, and construction convenience is ensured.

[0097] Example 6 High-speed rail and maglev combined rail beam bridge passing through a river

[0098] Combination Fig.14 The high-speed rail and maglev combined rail beam bridge according to the present invention is demonstrated to pass through a river. It is planned to build a box beam line with a total length of 5km, and a river 6d is passed in the middle of the box beam line. The box beam 6a is supported on the pier 6e, the high-speed railway track 6b is laid on the upper part of the box beam 6a, and the maglev track beam 6c is laid in the box chamber 6h. When the combined box beam needs to pass through the river 6d, the box beam can maintain the combination of one beam and two tracks to pass through the river 6d as a whole, or at a position 1km away from one bank of the river 6d, the box beam adopts an open scissor-shaped bifurcation change, the high-speed rail vehicle runs on the upper part of the box beam with an open scissor-shaped change, and the maglev vehicle runs inside the box beam with an open scissor-shaped change. The high-speed rail passage and the maglev traffic passage are bifurcated at different elevations, and finally separated into two beams and two tracks of a single-line single channel of the box beam. At a position 1km away from the other bank of the river 6d, the high-speed rail passage and the maglev passage are re-merged in the form of one beam and two tracks in the same span of the box beam, and a combined transportation system in which high-speed rail trains and maglev vehicles run simultaneously is formed again. By changing one beam and two tracks to two beams and two tracks, the restrictions of the terrain are avoided, the driving limits of the high-speed rail trains and maglev vehicles are guaranteed, and the construction convenience is ensured at the same time.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for setting up a combined rail beam bridge for high-speed rail and maglev transportation, characterized in that: The line shape of the box girder is the same as that of the maglev transportation track beam, and the line shape of the top high-speed railway track is the same as that of the maglev transportation track beam; on different channels of the box girder, the superelevation of the high-speed railway track is different from the superelevation of the maglev transportation track beam, the superelevation of the high-speed railway track flat curve is set according to the speed of the high-speed railway vehicle, and the superelevation of the flat curve of the maglev transportation track beam is set according to the speed of the maglev transportation vehicle; the superelevation at the box girder support position is the average superelevation of the high-speed railway channel and the maglev transportation channel at the mid-span position; the box girder achieves force balance of the box girder, the high-speed railway vehicle and the maglev transportation vehicle by setting a lateral pre-eccentricity.

2. The method for setting up a combined rail beam bridge for high-speed rail and maglev transportation according to claim 1, characterized in that: The vehicles on the high-speed railway track and the maglev transportation track beam maintain force balance at any position of the box beam.

3. The method for setting up a combined rail beam bridge for high-speed rail and maglev transportation according to claim 1, characterized in that: At least one box beam is provided along the line. If multiple box beams are provided, a flexible sealing device is provided between two adjacent box beams.

4. The method for setting up a combined rail beam bridge for high-speed rail and maglev transportation according to claim 1, characterized in that: The maglev transportation track beam is provided with a plurality of streamlined airflow holes at intervals horizontally along its extension direction.

5. The method for setting up a high-speed rail and maglev combined rail beam bridge according to claim 1, characterized in that: The bottom of the box beam is provided with piers corresponding to the number and positions of the box chambers.

6. The method for setting up a combined track beam bridge for high-speed rail and maglev transportation according to claim 5, characterized in that: The high-speed rail vehicle, the maglev transportation vehicle and the pier correspond to each other, and the eccentric distance of the high-speed rail vehicle is e 高铁 , the eccentric distance of the maglev vehicle is e 磁浮 , e 高铁 and e 磁浮 Both are 0.5m~1m.

7. The method for setting up a high-speed rail and maglev combined rail beam bridge according to claim 1, characterized in that: A branch road can be connected to the box girder, and the starting end and the ending end of the branch road are connected at intervals on the same side of the box girder. The branch road is another separate box girder. The high-speed railway track is arranged on the top of the box girder on one side, and the maglev transportation track beam is arranged inside the box girder on the other side. When the high-speed railway vehicle and the maglev transportation vehicle travel to the starting end of the branch road, they travel separately on the two box girders, and when they travel to the ending end of the branch road, they reunite and travel on the same box girder.

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