High-speed magnetic suspension two-stage fine adjustment track structure
By using a two-stage fine-tuning track structure for high-speed maglev, and by employing pre-embedded steel bars and adjustable connectors, the construction and maintenance challenges of the high-speed maglev track beam structure have been solved, achieving high smoothness and structural strength, and improving track stability and maintenance convenience.
Patent Information
- Application Number
- CN202423226255.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The existing high-speed maglev track beam structure is difficult to manufacture and construct, difficult to maintain, difficult to install sound barriers, difficult to rescue and evacuate, and the track structure is not strong enough.
The high-speed maglev two-stage fine-tuning track structure is adopted, including track slab, base, cast-in-place concrete adjustment layer, adjustable connectors and concrete foundation. The track can be finely adjusted by pre-embedded steel bars and adjustable connectors, which reduces the amount of on-site concrete casting and enhances the structural strength.
It achieves high smoothness and strength in the track structure, reduces construction difficulty, improves maintenance convenience, solves the problems of sound barrier installation and rescue evacuation, and enhances the overall integrity and stability of the structure.
Smart Images
Figure CN223813664U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of maglev transportation, especially relates to a high-speed maglev two-stage fine adjustment track structure. BACKGROUND
[0002] The high-speed maglev vehicle of the normal-conducting electromagnetic system adopts the track-holding mode to run on the line in the suspended mode, and can solve the problems of wheel-rail adhesion, friction and contact current collection faced by the traditional wheel-rail railway, and realize a speed of 600 km / h or even higher.
[0003] In view of the special running mode of the high-speed maglev vehicle of the normal-conducting electromagnetic system and the interface relationship between the vehicle and the track system of the line, the Shanghai Maglev Demonstration Line built in China in 2002 adopts the design concept of bridge and track integration, combines the high-precision track structure and the bridge through the connecting pieces with precise machining, and forms an integral track beam structure.
[0004] The integral track beam structure puts forward extremely high requirements on the manufacturing and machining of the track beam, and the deformation and deviation of the beam body need to be strictly controlled in the processes of beam body prestressed reinforcement design, maintenance, machining and beam erection. Meanwhile, in the process of line operation, the deformation of the line can only be adjusted through the bridge support, which is not conducive to the maintenance and repair of the line and the maintenance of the high smoothness of the track structure.
[0005] In addition, for the section with a high bridge height, the integral track beam structure has problems such as difficulty in setting up a sound barrier and difficulty in rescue evacuation. CONTENT OF THE UTILITY MODEL
[0006] Therefore, the utility model aims to provide a high-speed maglev two-stage fine adjustment track structure to solve the problems of difficult manufacturing and construction and difficult maintenance of the integral track beam structure of the prior art.
[0007] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:
[0008] A high-speed maglev two-stage fine adjustment track structure, comprising a track plate, a base, a cast-in-place concrete adjustment layer, an adjustable connecting piece and a concrete pile cap, the lower end of the base is connected to the foundation through the concrete pile cap, the track plate is arranged above the base, the base and the track plate are connected through the cast-in-place concrete adjustment layer, and the two sides of the track plate are respectively installed with functional area components through the adjustable connecting pieces.
[0009] Further, the base and the track plate are both reinforced concrete prefabricated structures, the first connecting steel bars are pre-buried on the base, the second connecting steel bars are pre-buried in the track plate, the track plate is provided with a boss groove, the first connecting steel bars and the second connecting steel bars are located in the boss groove, the cast-in-place concrete adjustment layer is poured around the connecting steel bars, in the boss groove, the upper end of the base and the lower end of the track plate.
[0010] Further, the first connecting steel bars and the second connecting steel bars in the boss groove are connected to each other, and a steel mesh is arranged in the cast-in-place concrete adjustment layer.
[0011] Further, a T-shaped segment is arranged at the lower end of the base, and a large end surface of the T-shaped segment is abutted to the foundation.
[0012] Further, the adjustable connecting piece comprises an adjusting member framework, an adjusting gasket, a nut plate and a screw rod, a nut or a threaded hole is arranged on the nut plate, the nut plate is fixedly installed on one side of the functional area component, the adjusting member framework is pre-buried into one side of the track plate, a through hole is arranged on the adjusting member framework, one end of the screw rod is threadedly connected to the nut plate after penetrating through the through hole, and the adjusting gasket is arranged between the nut plate and the adjusting member framework.
[0013] Further, the cross section of the adjusting member framework is a U-shaped structure, and one end of the screw rod is located in the U-shaped structure.
[0014] Further, the through hole is a long circular through hole.
[0015] Further, a mounting groove is arranged at the bottom of the U-shaped structure, a locking gasket is arranged in the mounting groove, the peripheral contour of the locking gasket is the same as the inner ring contour of the mounting groove, an adaptive hole is arranged in the middle of the locking gasket, the periphery of the screw rod is located in the adaptive hole, and one end of the screw rod is abutted to one side of the locking gasket.
[0016] Compared with the prior art, the high-speed magnetic suspension two-stage fine adjustment track structure has the following beneficial effects:
[0017] (1) The high-speed magnetic suspension two-stage fine adjustment track structure reduces the on-site cast-in-place concrete work amount, and can realize two-stage fine adjustment of the track structure through the cast-in-place concrete adjustment layer and the bidirectional adjustable connecting piece during the construction process, and can realize fine adjustment through the bidirectional adjustable connecting piece during the operation and maintenance process, so that the high smoothness of the track is ensured.
[0018] (2) The high-speed magnetic suspension two-stage fine adjustment track structure, the boss groove is a pouring hole, after the track plate is fine adjusted, the cast-in-place concrete adjustment layer is poured through the groove grouting hole, the pouring hole corresponds to the position of the boss, the boss and the track plate grouting hole are mutually engaged, and the pre-buried steel bars of the track plate and the base make the adjustment layer, the track plate and the base form an integral whole, so that the structural strength of the integral whole is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:
[0020] Figure 1 A profile schematic view of a high-speed magnetic levitation two-stage fine adjustment track structure is described in the embodiments of the present application;
[0021] Figure 2 A profile schematic view of a high-speed magnetic levitation two-stage fine adjustment track structure applied to a curve segment track is described in the embodiments of the present application;
[0022] Figure 3 A structure schematic view of a track slab and an adjustable connecting piece is described in the embodiments of the present application;
[0023] Figure 4 A profile schematic view of an adjustable connecting piece is described in the embodiments of the present application;
[0024] Figure 5 A structure schematic view of an adjusting piece framework is described in the embodiments of the present application.
[0025] Explanation of reference signs:
[0026] 1 - track slab; 2 - base; 3 - first connecting steel bar; 4 - cast-in-place concrete adjustment layer; 5 - adjustable connecting piece; 51 - adjusting piece framework; 52 - adjusting pad plate; 53 - nut plate; 54 - screw rod; 55 - perforation; 56 - locking pad plate; 6 - concrete pile cap; 7 - guide plate; 8 - sliding plate; 9 - stator embedded sleeve; 10 - stator body; 11 - foundation; 12 - boss groove; 13 - functional area component; 14 - second connecting bar. DETAILED DESCRIPTION
[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0028] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.
[0029] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "link", "connect" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according of specific circumstances.
[0030] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.
[0031] As Figures 1-5 The utility model discloses a high-speed magnetic suspension two-stage fine adjustment track structure, including track board 1, base 2, cast-in-place concrete adjustment layer 4, adjustable connecting piece 5 and concrete pile cap, the lower end of base 2 is connected to foundation 11 through concrete pile cap 6, the foundation 11 of this embodiment is bridge, tunnel and subgrade etc. lower foundation 11, track board 1 is arranged above base 2, and base 2 is connected with track board 1 through cast-in-place concrete adjustment layer 4, and both sides of track board 1 are installed functional area component 13 through adjustable connecting piece 5 respectively, and the functional area component 13 of this embodiment has installed guide plate 7, sliding plate 8, stator embedded sleeve 9 and stator body 10 etc. functional parts of prior art respectively, which will not be repeated here.
[0032] The track structure reduces the cast-in-place concrete workload on site, and simultaneously, two-stage fine adjustment of the track structure can be realized through cast-in-place concrete adjustment layer 4 and bidirectional adjustable connecting piece 5 during construction, fine adjustment can be realized through bidirectional adjustable connecting piece 5 during operation and maintenance, the high smoothness of the track is ensured, and in subsequent construction, the overall smoothness precision of the track structure is realized by preferentially adjusting cast-in-place concrete adjustment layer 4, wherein track board 1, base 2 and functional area component 13 are longitudinal block structures, wherein track board 1 and base 2 are longitudinal block structures of prefabricated reinforced concrete, the longitudinal theoretical length can be 6.192 m, the functional area component is a prefabricated steel component, and the longitudinal theoretical length can be 3.096 m, and the block length of each component is reasonably determined according to structural mechanics characteristics, track smoothness, transportation convenience, economy and the like.
[0033] The base 2 and the track plate 1 are both prefabricated structures of reinforced concrete, the first connecting steel bars 3 are embedded in the base 2, the track plate 1 is provided with boss grooves 12, the second connecting bars 14 are embedded in the track plate 1, the first connecting steel bars 3 and the second connecting bars 14 are located in the boss grooves 12, the cast-in-situ concrete adjustment layer 4 is poured around the connecting steel bars, in the boss grooves 12 and at the upper end of the base 2 and the lower end of the track plate 1, the first connecting steel bars and the second connecting steel bars in the boss grooves 12 are connected to each other, the reinforcing mesh is arranged in the cast-in-situ concrete adjustment layer 4, the boss grooves 12 are pouring holes, after the track plate 1 is precisely adjusted, the cast-in-situ concrete adjustment layer 4 is poured through the pouring holes, the boss is formed at the position corresponding to the pouring hole, the boss and the pouring hole of the track plate 1 are engaged with each other, meanwhile, the embedded steel bars of the track plate 1 make the adjustment layer and the track plate 1 form an integral whole, which provides the required vertical uplift resistance and transverse shear resistance for the assembled track structure, and ensures the overall structural strength.
[0034] In the implementation, the super elevation (transverse slope) of the track structure in the curved section can be realized by adjusting the size of the cast-in-situ concrete adjustment layer 4. The super elevation slope rate can be realized by changing the arrangement position of the adjustable connecting piece 5 on the track plate 1, as shown in the figure. Figure 2 The figure shows the cross-sectional structure of the two-stage precise adjustment track structure of the high-speed magnetic levitation applied to the curved section track.
[0035] The T-shaped section is arranged around the lower end of the base 2, the large end face of the T-shaped section abuts to the foundation 11, and in the implementation, the cross-sectional shape of the longitudinal end of the base 2 in a certain range is inverted T-shaped, so as to ensure the stability of the base 2, the cross-sectional shape of the remaining part of the base 2 is rectangular, and in summary, when the components are damaged, the influence on the remaining components is small when they are repaired and replaced, even if the base 2 is removed, the lower foundation 11 structure of the bridge, tunnel, roadbed and the like will not be damaged, the separation of the track structure and the bridge foundation 11 bearing structure is realized, which is suitable for different foundation 11 structures such as bridges, roadbeds and tunnels; through the arrangement of the adjustable connecting piece 5, the high-precision two-way adjustment of the track structure in the construction and operation process can be realized; the prefabricated assembly technology is adopted, which is more convenient for manufacturing, transportation, installation and maintenance and repair, can improve the construction quality and precision of the track structure, and reduces the amount of on-site construction masonry.
[0036] As shown in the figures. Figure 3 and Figure 5As shown, the adjustable connecting piece 5 can realize two-way fine adjustment of the assembled track structure during construction and operation maintenance to maintain high smoothness of the track, the adjustable connecting piece 5 of the embodiment includes an adjusting member framework 51, an adjusting gasket 52, a nut plate 53 and a screw rod 54, the nut plate 53 is provided with nuts or threaded holes, the nut plate 53 is fixedly installed on one side of the functional area component 13, the adjusting member framework 51 is embedded into one side of the track plate 1, the adjusting member framework 51 is provided with a through hole 55, one end of the screw rod 54 is threadedly connected to the nut plate 53 after passing through the through hole 55, and the adjusting gasket 52 is arranged between the nut plate 53 and the adjusting member framework 51.
[0037] In implementation, the cross section of the adjusting member framework 51 is a U-shaped structure, one end of the screw rod 54 is located in the U-shaped structure, the through hole 55 is a long circular hole, so that the screw rod 54 can slide in the long circular hole, round holes are opened in the adjusting gasket 52 and the nut plate 53, the adjusting member framework 51, the adjusting gasket 52 and the nut plate 53 are connected in series through the screw rod 54, the thickness of the adjusting gasket 52 is used to adjust the distance between the functional area component 13 and the track plate 1, the through hole 55 is used to adjust the relative height between the functional area component 13 and the track plate 1, and in order to limit the relative position of the screw rod 54, a mounting groove is arranged at the bottom of the U-shaped structure, a locking gasket 56 is arranged in the mounting groove, the outer contour of the locking gasket 56 is the same as the inner contour of the mounting groove, an adaptive hole is arranged in the middle of the locking gasket 56, the outer periphery of the screw rod 54 is located in the adaptive hole, one end of the screw rod 54 abuts to one side of the locking gasket 56, and the opening position of the adaptive hole on the locking gasket 56 is adjusted in implementation, so that the relative height between the functional area component 13 and the track plate 1 can be adjusted.
[0038] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A high-speed maglev two-stage fine-tuning track structure, characterized in that: It includes a track slab (1), a base (2), a cast-in-place concrete adjustment layer (4), an adjustable connector (5), and a concrete foundation. The lower end of the base (2) is connected to the foundation (11) through the concrete foundation (6). The track slab (1) is installed above the base (2), and the base (2) and the track slab (1) are connected through the cast-in-place concrete adjustment layer (4). Functional area components (13) are installed on both sides of the track slab (1) through the adjustable connector (5).
2. The high-speed maglev two-stage fine-tuning track structure according to claim 1, characterized in that: Both the base (2) and the track plate (1) are precast reinforced concrete structures. The base (2) has a first connecting steel bar (3) embedded in it, and the track plate (1) has a second connecting steel bar (14) embedded in it. The track plate (1) has a boss groove (12). The first connecting steel bar (3) and the second connecting steel bar (14) are located in the boss groove (12). The outer periphery of the connecting steel bar, the boss groove (12), the upper end of the base (2) and the lower end of the track plate (1) are filled with cast-in-place concrete adjustment layer (4).
3. The high-speed maglev two-stage fine-tuning track structure according to claim 2, characterized in that: The first connecting steel bar (3) and the second connecting steel bar (14) in the groove (12) of the boss are connected to each other, and a steel mesh is set in the cast-in-place concrete adjustment layer (4).
4. The high-speed maglev two-stage fine-tuning track structure according to claim 1, characterized in that: A T-shaped section is arranged on the lower periphery of the base (2), and the large end face of the T-shaped section abuts against the foundation (11).
5. The high-speed maglev two-stage fine-tuning track structure according to claim 1, characterized in that: The adjustable connector (5) includes an adjusting frame (51), an adjusting pad (52), a nut plate (53), and a screw (54). The nut plate (53) is provided with a nut or threaded hole. The nut plate (53) is fixedly installed on one side of the functional area component (13). The adjusting frame (51) is embedded in one side of the track plate (1). The adjusting frame (51) is provided with a through hole (55). One end of the screw (54) passes through the through hole (55) and is threaded to the nut plate (53). An adjusting pad (52) is provided between the nut plate (53) and the adjusting frame (51).
6. The high-speed maglev two-stage fine-tuning track structure according to claim 5, characterized in that: The cross-section of the adjusting frame (51) is a U-shaped structure, and one end of the screw (54) is located inside the U-shaped structure.
7. The high-speed maglev two-stage fine-tuning track structure according to claim 5, characterized in that: The perforation (55) is an oblong through hole.
8. The high-speed maglev two-stage fine-tuning track structure according to claim 6, characterized in that: The bottom of the U-shaped structure is provided with an installation groove, and a locking pad (56) is provided in the installation groove. The outer contour of the locking pad (56) is the same as the inner contour of the installation groove. The locking pad (56) is provided with an adapter hole in the middle. The outer periphery of the screw (54) is located in the adapter hole, and one end of the screw (54) abuts against one side of the locking pad (56).