Anti-seismic limiting device and system of ballastless track system

Abstract

The utility model relates to the technical field of rail transit, and provides an anti-seismic limiting device and system of a ballastless track system.The device comprises a first connecting plate, a second connecting plate, a first limiting part and a first energy consumption piece, and the first energy consumption piece is connected to the first connecting plate and the second connecting plate; the first connecting plate and the second connecting plate are relatively close to or away from each other in the transverse bridge direction so that the first energy dissipation piece can deform, and the first limiting part is used for limiting the maximum displacement of the first connecting plate relative to the second connecting plate. According to the device, transverse dislocation between the roadbed slab and the bridge deck can be reduced, disengagement of the roadbed slab and the bridge deck is avoided, and the operation safety of a ballastless track system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit technical field, especially a kind of anti-seismic limiting device and system of ballastless track system. BACKGROUND

[0002] Earthquake has suddenness, strong destructiveness and unpredictability, and high-speed railway track-bridge system is the most important for ensuring the safe and stable operation of high-speed train.For the ballastless track system on bridge, the deformation amplitude and direction of the adjacent two-span beam ends cannot be consistent under the action of earthquake, causing the adjacent track bed plate of beam end to have large transverse misplacement, and the displacement of beam body aggravates the probability and degree of track bed plate disengaging from bridge deck slab, which easily causes the track bed plate and bridge deck slab to be empty.To this end, a bridge ballastless track system beam end anti-seismic limiting device is proposed, which limits the relative displacement of beam end beam rail system and improves the energy dissipation performance of ballastless track system beam end. SUMMARY

[0003] The utility model aims at: solve the problem that track bed plate is prone to have large transverse misplacement with corresponding bridge deck slab under the action of earthquake in prior art, and provide a kind of anti-seismic limiting device and system of ballastless track system.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0005] An anti-seismic limiting device of ballastless track system, comprising:

[0006] A first connecting plate for connecting track bed plate;

[0007] A second connecting plate for connecting bridge deck slab;

[0008] A first limiting part connected to the bridge deck slab;

[0009] A first energy-dissipating piece connected to the first connecting plate and the second connecting plate respectively;

[0010] The first connecting plate and the second connecting plate relatively approach or move away along the transverse direction of bridge, which can make the first energy-dissipating piece deform, and the first limiting part is used to limit the maximum displacement of the first connecting plate relative to the second connecting plate.

[0011] The first connecting plate and the second connecting plate can adopt forms such as an arc shape, a flat plate, a folded plate, etc., as long as the mutual approaching or moving away of the two in the transverse bridge direction is not affected. The first energy dissipation member can adopt existing energy dissipation members such as a rubber member, an elastic energy dissipation member, a shear energy dissipation member, etc., so that the first energy dissipation member generates energy dissipation due to deformation, thereby reducing the displacement amount. The first limiting part can be provided in the anti-seismic limiting device or can be independently provided, can be a structure limiting the maximum displacement of movement to the two sides in the transverse bridge direction, or can be two structures respectively limiting the maximum displacement of movement to the two sides in the transverse bridge direction. The first connecting plate and the second connecting plate can be arranged in a plane or vertically arranged. The first limiting part is connected to the bridge deck plate, which can also avoid interfering with the surface arrangement of the track bed plate.

[0012] The anti-seismic limiting device of the ballastless track system can drive the first connecting plate connected to the track bed plate and the second connecting plate connected to the bridge deck plate to displace in the transverse bridge direction under the action of external forces such as earthquakes, so that the first energy dissipation member deforms to dissipate energy, thereby reducing the transverse displacement between the track bed plate and the bridge deck plate, avoiding the disengagement of the two, and improving the operation safety.

[0013] Preferably, the first connecting plate and the second connecting plate can be mutually overlapped, the first connecting plate and the second connecting plate are provided with the first energy dissipation member at the overlapping surface, and the first energy dissipation member is a viscoelastic pad.

[0014] The viscoelastic pad can be made of materials such as rubber, TPE, polymer foam, etc.

[0015] Further preferably, the first connecting plate is provided with the second connecting plate on both sides.

[0016] The number of first connecting plates is set according to actual needs, and multiple first connecting plates can be independent, connected to each other, or integrally formed, multiple second connecting plates can be independent, connected to each other, or integrally formed. The multiple viscoelastic pads provided correspondingly can be integrally formed or independent.

[0017] Further preferably, the viscoelastic pad has a folded edge at both ends in the transverse bridge direction.

[0018] The folded edge is used to form a buffer interface to reduce the impact in the first connecting plate end surface direction and the second connecting plate end surface direction, and the relative movement between the first connecting plate end surface direction and the second connecting plate end surface and the folded edge also has the effect of longitudinal energy dissipation.

[0019] Preferably, the first limiting part is a bolt for connecting the second connecting plate and the bridge deck plate.

[0020] Simplify the number of components and structural size of the anti-seismic limiting device, and improve the spatial arrangement flexibility of the device.

[0021] Preferably, the first connecting plate is arranged on the side surface of the track bed plate, and the second connecting plate is arranged on the side surface of the bridge deck plate.

[0022] The first connecting plate and the second connecting plate are arranged in corresponding positions, which can be arranged on the side surface of the beam body or the end surface of the beam end.

[0023] The anti-seismic limiting system of the ballastless track system comprises two anti-seismic limiting devices of the ballastless track system as described above, and further comprises a third connecting plate.

[0024] The anti-seismic limiting system of the ballastless track system adds the energy dissipation structure in the longitudinal direction, thereby limiting the longitudinal displacement of the end portions of the two track bed plates adjacent in the longitudinal direction.

[0025] Preferably, the two third connecting plates are overlapped with each other, and the second energy dissipation member is arranged on the overlapped surface of the two third connecting plates.

[0026] Further preferably, the first connecting plate is connected to the side surface of the beam end of the track bed plate through a first mounting plate, the third connecting plate is connected to the end surface of the beam end of the track bed plate through a corresponding second mounting plate, and the first connecting plate, the second connecting plate and the third connecting plate are parallel to the top surface of the track bed plate.

[0027] By adopting the above arrangement, the protective structure can be formed at the end corner of the track bed plate, the damage probability is further reduced, the structural height of the device is reduced, the installation adaptability is improved, and the influence on the installation of the ballastless track system is reduced.

[0028] The first connecting plate and the first mounting plate, and the third connecting plate and the corresponding second mounting plate can be fixedly connected or integrally formed. The first mounting plate and the second mounting plate can be independent, fixedly connected or integrally formed. The size and thickness of the first mounting plate and the second mounting plate are not limited to be the same.

[0029] Further preferably, a top plate is connected between the first mounting plate and the corresponding second mounting plate.

[0030] The first mounting plate, the second mounting plate and the top plate are integrally positioned and installed, and the corner structure formed by the first mounting plate, the second mounting plate and the top plate protects the corner point of the track bed plate from concrete falling and damage.

[0031] In summary, due to the adoption of the above technical solutions, the present application has the following beneficial effects:

[0032] 1. An anti-seismic limiting device of a ballastless track system, capable of reducing the transverse displacement between the track bed plate and the bridge deck plate, avoiding the disengagement of the two, and improving the operation safety.

[0033] 2. An anti-seismic limiting system of a ballastless track system, capable of generating bidirectional limiting and energy dissipation in the transverse and longitudinal directions, effectively protecting the transverse and longitudinal displacement of the track bed plate under the action of external forces such as earthquakes, thereby improving the operation safety of the ballastless track system. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a three-dimensional schematic view of the installation state of the anti-seismic limiting device of a ballastless track system of embodiment 1;

[0035] Figure 2 is a partial enlarged view in Figure 1

[0036] Figure 3 is a plan view of Figure 1

[0037] Figure 4 is an elevation view of Figure 1

[0038] Figure 5 is a three-dimensional schematic view of the installation state of the anti-seismic limiting system of a ballastless track system of embodiment 2;

[0039] Figure 6 is a partial structural schematic view (not showing the track bed plate and the bridge deck plate on the right side) in Figure 5

[0040] Figure 7 is a plan view of Figure 5

[0041] Figure 8 is an elevation view of Figure 5

[0042] ​​​​​​Reference signs: 1 - road bed plate; 2 - bridge deck plate; 31 - first energy dissipation piece; 32 - second energy dissipation piece; 41 - first connecting plate; 42 - second connecting plate; 43 - third connecting plate; 5 - bolt; 61 - first mounting plate; 62 - second mounting plate; 63 - top plate. DETAILED DESCRIPTION

[0043] The utility model will be described in detail below in combination with the drawings.

[0044] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be described in further detail below in combination with test examples and specific embodiments. However, this should not be understood as limiting the scope of the above-mentioned subject matter of the utility model to the following examples only, and any technology realized based on the content of the utility model falls within the scope of the utility model.

[0045] In the description of the specific embodiments of the utility model, the terms expressing the orientation or positional relationship of "up", "down", "left", "right", "center", "inner", "outer" and the like are based on the orientation or positional relationship expressed in the drawings, or the orientation or positional relationship used when the product / equipment / device of the utility model is normally used. These terms of orientation or positional relationship are only used to facilitate the description of the utility model scheme or simplify the description in the specific embodiments, so as to enable the skilled person to quickly understand the scheme, and therefore cannot be understood as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore cannot be understood as limiting the utility model.

[0046] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding device / component / element must be absolutely horizontal or vertical or overhanging or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simply understood that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "overhanging", "parallel" and the like, and can have an error / deviation of ±10% with respect to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the utility model.

[0047] In addition, the terms "first", "second", "third" and the like appearing in the terms are only used to distinguish the description of the same or similar parts, and should not be understood as emphasizing or implying the relative importance of a specific part.

[0048] In addition, in the description of the embodiments of the utility model, "several" "a plurality of" "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. Any situation, or even more than 9 cases.

[0049] In addition, in the description of the technical scheme of the utility model, unless otherwise specified / limited / limited, the terms "set" "install" "connect" "connect" "set" "lay" "arrange" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, which can be welding, riveting, bolting, screwing and other commonly used connecting means in the art. This connection can be mechanical connection, electrical connection or communication connection, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements.

[0050] Embodiment 1

[0051] The utility model adopts a kind of anti-seismic limiting device of ballastless track system, comprising:

[0052] First connecting plate 41 is used to connect ballast bed plate 1;

[0053] Second connecting plate 42 is used to connect bridge deck plate 2;

[0054] First limiting portion is connected to the bridge deck plate 2;

[0055] First energy-consuming piece 31, the first energy-consuming piece 31 is connected to the first connecting plate 41 and second connecting plate 42 respectively;

[0056] The first connecting plate 41 and second connecting plate 42 relatively close or far away along the bridge direction can make the first energy-consuming piece 31 be deformed, and the first limiting portion is used to limit the maximum displacement of the first connecting plate 41 relative to the second connecting plate 42.

[0057] Specifically, as Figures 1-4As shown, one anti-seismic limiting device is arranged on each side of the beam body, and the two anti-seismic limiting devices can be arranged in central symmetry or axial symmetry, or staggered. The first connecting plate 41 and the second connecting plate 42 are both planar plates, the first connecting plate 41 is bolted to the side of the track bed plate 1 through the first mounting plate 61, and the second connecting plate 42 is arranged on the side of the bridge deck plate 2. The first connecting plate 41 and the second connecting plate 42 are both parallel to the top surface of the track bed plate 1, the positions of the first connecting plate 41 and the second connecting plate 42 correspond to each other, the first connecting plate 41 and the first mounting plate 61 are an integral structure, forming a T-shaped cross section, and the second connecting plate 42 has two, which are arranged on the upper and lower sides of the first connecting plate 41, respectively. The first connecting plate 41 and the second connecting plate 42 are overlapped with each other, and the first connecting plate 41 and the second connecting plate 42 are provided with a first energy dissipation piece 31 at the overlapping surface, the first energy dissipation piece 31 adopts a viscoelastic pad, and the viscoelastic pads at the two overlapping surfaces can be independent or an integral structure, and each has an upwardly extending and downwardly extending folded edge, such as Figure 2 As shown, the impact of the end surface of the first connecting plate 41 and the second connecting plate 42 under displacement is avoided. The two second connecting plates 42 are connected to the bridge deck plate 2 through the bolt 5, and the bolt 5 can limit the maximum transverse displacement between the first connecting plate 41 and the second connecting plate 42 as the first limiting part.

[0058] The arrangement height of the second connecting plate 42 can be lower than the top surface of the track bed plate 2.

[0059] In some embodiments, the first connecting plate 41 and the second connecting plate 42 can adopt forms such as arc-shaped plates, folded plates, etc.

[0060] In some embodiments, the plate surface of the first connecting plate 41 and the second connecting plate 42 can also be perpendicular to the top surface of the track bed plate 2.

[0061] In some embodiments, one second connecting plate 42 can also be arranged between the two first connecting plates 41.

[0062] In some embodiments, the first limiting part can adopt an independent structure for limiting.

[0063] In some embodiments, the same side of the beam body can be provided with a plurality of anti-seismic limiting devices.

[0064] In some embodiments, the first connecting plate 41 and the second connecting plate 42 can also be arranged at the end surface of the beam end.

[0065] Embodiment 2

[0066] An anti-seismic limiting system of a ballastless track system, comprising two anti-seismic limiting devices of a ballastless track system as described in Embodiment 1, such as Figures 5-8As shown, the anti-seismic limiting device further comprises a third connecting plate 43, and a second energy dissipation piece 32 is connected between the corresponding two third connecting plates 43, and the corresponding two third connecting plates 43 are relatively close to or away from each other along the longitudinal direction, so that the second energy dissipation piece 32 is deformed.

[0067] The longitudinal limiting energy dissipation structure formed by the corresponding two third connecting plates 43 and the second energy dissipation piece 32 can be arranged in the same manner as the transverse limiting energy dissipation structure of the anti-seismic limiting device, but it is not required to adopt the same structure.

[0068] Specifically, the first connecting plate 41 is connected to the beam end side of the track bed plate 1 through the first mounting plate 61, and the third connecting plate 43 is connected to the beam end side of the track bed plate 1 through the corresponding second mounting plate 62, for example, Figures 5-8 As shown, the first connecting plate 41, the second connecting plate 42 and the third connecting plate 43 are parallel to the top surface of the track bed plate 1, the first mounting plate 61 and the second mounting plate 62 are arranged adjacent to each other to form an angle steel, the second mounting plate 62 can also be connected to the track bed plate 2 through bolts, and the third connecting plate 43 and the corresponding second mounting plate 62 can be fixedly connected or integrally formed. The corresponding two third connecting plates 43 are overlapped with each other, and the number of third connecting plates 43 at the two beam ends can be the same or different. The third connecting plates 43 at the two beam ends can be arranged alternately, and the second energy dissipation piece 32 is arranged at the overlapping surface of the two third connecting plates 43. The second energy dissipation piece 32 is a viscoelastic pad, and the second energy dissipation piece 32 and the first energy dissipation piece 31 can be made of the same structural material. In the embodiment, Figure 6 The anti-seismic limiting device on the left side in the figure has one third connecting plate 43, and the anti-seismic limiting device on the right side has two third connecting plates 43. The viscoelastic pad at the overlapping surface is of an integral structure and also has a folded edge structure.

[0069] The second mounting plate 62 and the opposite third mounting plate 43 can cooperate to form longitudinal limiting, and of course other ways can also be used to limit the maximum displacement in the longitudinal direction.

[0070] The first mounting plate 61 and the corresponding second mounting plate 62 are connected with a top plate 63, so as to facilitate the overall installation at the corner end of the track bed plate 1.

[0071] In some embodiments, the first mounting plate 61 and the second mounting plate 62 can also be arranged separately.

[0072] In some embodiments, the structure for transverse anti-seismic limiting can also be located at the beam end side, and the structure for longitudinal anti-seismic limiting can be located at the beam side.

[0073] In some embodiments, the surface of the third connecting plate 43 can also be perpendicular to the top surface of the track bed plate 2.

[0074] In some embodiments, the longitudinal energy dissipation limiting structures formed by the two third connecting plates 43 and the second energy dissipation member 32 can be provided in plurality and do not need to be one-to-one corresponding or connected as a whole with the transverse energy dissipation limiting structures.

[0075] The above are only preferred embodiments of the present application, and are not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A seismic limiting device for a ballastless track system, characterized in that, The utility model relates to a kind of anti-seismic limiting devices of ballastless track system, comprising: First connecting plate (41) for connecting track bed plate (1); Second connecting plate (42) for connecting bridge deck plate (2); First limiting portion is connected to the bridge deck plate (2); First energy dissipation piece (31), the first energy dissipation piece (31) is connected to the first connecting plate (41) and second connecting plate (42) respectively; The first connecting plate (41) and second connecting plate (42) relatively close or far along transverse bridge direction can make the first energy dissipation piece (31) deform, and the first limiting portion is used to limit the maximum displacement of the first connecting plate (41) relative to the second connecting plate (42).

2. The anti-seismic limiting device of a ballastless track system according to claim 1, characterized in that, The first connecting plate (41) and second connecting plate (42) can be overlapped, and the first energy dissipation piece (31) is provided at the overlapping surface of the first connecting plate (41) and second connecting plate (42), and the first energy dissipation piece (31) is a viscoelastic pad.

3. The anti-seismic limiting device of a ballastless track system according to claim 2, characterized in that, The first connecting plate (41) is provided with the second connecting plate (42) on both sides.

4. The anti-seismic limiting device of a ballastless track system according to claim 2, characterized in that, The viscoelastic pad has a folded edge towards both ends in the transverse bridge direction.

5. The seismic limiting device of a ballastless track system according to claim 1, characterized in that, The first limiting portion is a bolt (5) for connecting the second connecting plate (42) and bridge deck plate (2).

6. The anti-seismic limiting device of a ballastless track system according to any one of claims 1-5, characterized in that, The first connecting plate (41) is provided on the side surface of the track bed plate (1), and the second connecting plate (42) is provided on the side surface of the bridge deck plate (2).

7. A seismic restraint system for a ballastless track system, characterized in that The utility model relates to a kind of anti-seismic limiting devices of ballastless track system, comprising two as claimed in claim 6, the anti-seismic limiting device further comprises third connecting plate (43), corresponding two second energy dissipation pieces (32) are connected between the third connecting plate (43), and corresponding two third connecting plate (43) relatively close or far along longitudinal bridge direction can make the second energy dissipation piece (32) deform.

8. A seismic limiting system for a ballastless track system according to claim 7, characterized in that Corresponding two third connecting plate (43) are overlapped, and corresponding two second energy dissipation pieces (32) are provided at the overlapping surface of the third connecting plate (43), and the second energy dissipation piece (32) is a viscoelastic pad.

9. A seismic limiting system for a ballastless track system according to claim 8, characterized in that The first connecting plate (41) is connected to the beam end side surface of the track bed plate (1) by first mounting plate (61), the third connecting plate (43) is connected to the beam end surface of the track bed plate (1) by corresponding second mounting plate (62), and the first connecting plate (41), second connecting plate (42) and third connecting plate (43) are parallel to the top surface of the track bed plate (1).

10. The seismic limiting system of a ballastless track system according to claim 9, characterized in that The first mounting plate (61) and corresponding second mounting plate (62) are connected with top plate (63).

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