A structure of the end slab of a conventional conduction high-speed maglev beam

Abstract

The present invention belongs to the technical field of the beam joint device for the conventional-conduction high-speed maglev bridge, and particularly relates to a structure of a conventional-conduction high-speed maglev beam-end slab, which comprises a T-shaped slab and two continuous beam bodies; the T-shaped slab comprises a T-shaped slab track slab beam and a T-shaped slab small pier column connected to the bottom surface of the T-shaped slab track slab beam; both ends of the T-shaped slab track slab beam are respectively arranged on the two continuous beam bodies, and the T-shaped slab small pier column is arranged between the two continuous beam bodies; clamping elastic steel plates are fixed on both sides of the T-shaped slab small pier column in the transverse direction of the bridge, beam-end chutes are arranged on the side surfaces of the beam ends of the two continuous beam bodies close to each other, and the clamping elastic steel plates on both sides of the T-shaped slab small pier column are respectively clamped in the beam-end chutes of the two continuous beam bodies. The present invention can ensure the equality, stability and reliability of the joint and the stability of the T-shaped slab, improve the riding comfort of the maglev train, and enhance the safety and stability of high-speed train operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of the beam joint device for the conventional-conduction high-speed maglev bridge, and particularly relates to a structure of a conventional-conduction high-speed maglev beam end coping slab. Background Art

[0002] The conventional-conduction high-speed maglev has extremely high requirements for the smoothness of the long spindle track. Relevant research shows that the maglev bow-shaped frame is greatly affected by the gap change and the beam end rotation angle when passing through the pier top, and the vibration of the electromagnet is very large. The main reason is the track unevenness caused by it, which is the bottleneck restricting the operation of high-speed trains. Therefore, reducing the change amount of the beam joint gap and the unevenness of the beam end rotation angle protrusion play a very important role in improving the driving of the conventional-conduction high-speed maglev train.

[0003] In order to overcome the problem of beam end rotation angle, at present, a coping slab is arranged at the beam joint of two beam bodies. Although it reduces some smoothness problems caused by the beam end rotation angle, its own weight is too small, and it will generate a large vibration response due to the action of the driving force, and there is an unstable phenomenon of jumping. In the long run, diseases such as rail fastening loosening will occur in the track area of the coping slab; and the existing coping slab technology cannot ensure the equality, stability and reliability of the joint, and it is difficult to meet the high-precision requirements below millimeters. Summary of the Invention

[0004] In order to overcome the deficiencies of the above-mentioned existing technologies, the purpose of the present invention is to provide a structure of a conventional-conduction high-speed maglev beam end coping slab, which can ensure the equality, stability and reliability of the joint and the stability of the T-shaped coping slab, improve the driving comfort of the maglev train, and improve the safety and stability of high-speed driving.

[0005] To achieve the above purpose, the technical solution of the present invention is a structure of a conventional-conduction high-speed maglev beam end coping slab, which includes a T-shaped coping slab and two continuous beam bodies; the T-shaped coping slab includes a T-shaped coping slab track slab beam and T-shaped coping slab small piers connected to the bottom surface of the T-shaped coping slab track slab beam; both ends of the T-shaped coping slab track slab beam are respectively arranged on the two continuous beam bodies, and the T-shaped coping slab small piers are arranged between the two continuous beam bodies; on both sides of the T-shaped coping slab small piers in the transverse direction of the bridge, clamping elastic steel plates are fixed, and beam end slots are arranged on the side surfaces of the beam ends of the two continuous beam bodies close to each other, and the clamping elastic steel plates on both sides of the T-shaped coping slab small piers are respectively clamped in the beam end slots of the two continuous beam bodies.

[0006] Furthermore, two clamping elastic steel plates are fixed on each side of the T-shaped coping slab small piers in the transverse direction of the bridge, and two corresponding beam end slots are arranged on the side surfaces of the beam ends of the two continuous beam bodies close to each other.

[0007] Furthermore, the bottom of the clamped elastic steel plate is fixedly connected to the T-shaped pier, and the top of the clamped elastic steel plate is opened and clamped in the beam end slot.

[0008] Furthermore, an elastic steel plate anchor is pre-embedded in the small pier of the T-shaped scaffolding, and the bottom of the clamped elastic steel plate is fixed to the elastic steel plate anchor.

[0009] Furthermore, the top surfaces of the beam ends of the two continuous beam bodies that are close to each other are both provided with downwardly recessed step portions, and the two ends of the T-shaped slab track beam are respectively arranged on the step portions of the two continuous beam bodies.

[0010] Furthermore, a small T-shaped plate support is provided at the corner of the step portion, and both ends of the T-shaped plate track plate beam are respectively arranged on the small T-shaped plate supports on the step portions of the two continuous beam bodies.

[0011] Furthermore, functional components are installed on both sides of the T-shaped slab track beam along the bridge direction.

[0012] Furthermore, the beam ends of the two continuous beam bodies close to each other are respectively installed on the bridge piers through longitudinal movable supports.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention extends a small T-type pier of the T-type pier to between two continuous beam bodies, extends a small T-type pier of the T-type pier to a certain depth between the two continuous beam bodies, and respectively clamps the clamping elastic steel plates on both sides of the small T-type pier of the T-type pier in the beam end clamping grooves on the beam end sides of the two continuous beam bodies. On the one hand, a longitudinal horizontal force can be generated to keep the T-type pier track plate beam in the middle, thereby dividing the beam seam into two, ensuring the equality, stability and reliability of the split seam. On the other hand, the clamping effect of the beam end clamping groove on the clamping elastic steel plate can limit the upward jumping of the T-type pier, ensure that the T-type pier does not jump due to its small weight, and make the T-type pier sufficiently stable, which is conducive to the safety and stability of high-speed driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the application of the end plate structure of the conventional high-speed magnetic levitation beam provided in an embodiment of the present invention in a two-span one-unit continuous beam;

[0017] Figure 2 The structural schematic diagram of the end connection slab structure of the conventional conductive high-speed maglev beam provided by the embodiment of the present invention;

[0018] Figure 3 The cross-sectional view of the T-shaped connection slab provided by the embodiment of the present invention;

[0019] Figure 4 The cross-sectional view of the T-shaped connection slab track slab beam on the beam end of the continuous beam body provided by the embodiment of the present invention;

[0020] In the figure: 1. Continuous beam body; 2. T-shaped connection slab; 21. T-shaped connection slab track slab beam; 22. Small pier column of T-shaped connection slab; 3. Longitudinal movable bearing; 4. Small bearing of T-shaped connection slab; 5. Clamping elastic steel plate; 6. Elastic steel plate anchor; 7. Beam end card slot; 8. Longitudinal fixed bearing. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention.

[0023] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more.

[0024] Such as Figures 1-4As shown, this embodiment provides a conventional high-speed maglev beam end plate structure, including a T-shaped plate 2 and two continuous beam bodies 1; the T-shaped plate 2 includes a T-shaped plate track plate beam 21 and a T-shaped plate small pier 22 connected to the bottom surface of the T-shaped plate track plate beam 21; the two ends of the T-shaped plate track plate beam 21 are respectively arranged on the two continuous beam bodies 1, and the T-shaped plate small pier 22 is arranged between the two continuous beam bodies 1; the T-shaped plate small pier 22 is symmetrically fixed with fixed elastic steel plates 5 on both sides of the transverse bridge direction, and the beam end side surfaces of the two continuous beam bodies 1 that are close to each other and correspond to the fixed elastic steel plates 5 are provided with beam end clamping grooves 7 for accommodating the fixed elastic steel plates 5, and the fixed elastic steel plates 5 on both sides of the T-shaped plate small pier 22 are respectively clamped in the beam end clamping grooves 7 of the two continuous beam bodies 1. In this embodiment, the beam-to-beam relationship at the corner of the pier top beam end is transformed into the beam-to-platform relationship by the T-type rail beam 21 of the T-type rail 2, so that the short wave irregularity is halved (i.e., the track fluctuation within a 3-meter length range), and at the same time, the beam joint expansion is divided into two, so that the joint width is halved; then, the T-type rail pier 22 of the T-type rail 2 is extended to a certain depth between the two continuous beam bodies 1, and the clamping elastic steel plates 5 on both sides of the T-type rail pier 22 of the T-type rail 2 are respectively The two continuous beam bodies 1 are clamped in the beam end clamping grooves 7 on the beam end sides. On the one hand, a longitudinal horizontal force can be generated to keep the T-type strap rail plate beam 21 in the middle, thereby dividing the beam seam into two, ensuring the equality, stability and reliability of the split seam. On the other hand, the beam end clamping grooves 7 clamp the elastic steel plate 5 to limit the upward jump of the T-type strap 2, ensuring that the T-type strap 2 does not jump due to its small weight, making the T-type strap 2 sufficiently stable and avoiding the occurrence of disease problems in the beam end strap area.

[0025] Furthermore, two of the clamping elastic steel plates 5 are fixed on each side of the T-shaped pier 22 in the transverse direction of the bridge, and two beam end clamping grooves 7 are correspondingly provided on the side surfaces of the beam ends of the two continuous beam bodies 1 that are close to each other. Figure 3 and Figure 4 As shown, in this embodiment, two clamping elastic steel plates 5 can be symmetrically fixed on both sides of the T-type pier 22 in the transverse direction of the bridge, and the two beam end clamping grooves 7 on the beam end side of each continuous beam body 1 correspond to the two clamping elastic steel plates 5 on the side of the T-type pier 22 facing each other, respectively, to ensure the equality, stability and reliability of the joints. The inner wall of the beam end clamping groove 7 of this embodiment can be pre-embedded with steel plates, so that the clamping elastic steel plates 5 directly act on the pre-embedded steel plates, avoiding the effect of the clamping elastic steel plates 5 on the beam body concrete affecting the equality, stability and reliability of the joints.

[0026] Furthermore, the bottom of the clamping elastic steel plate 5 is fixedly connected to the T-shaped pier 22, and the top of the clamping elastic steel plate 5 is opened and clamped in the beam end slot 7. Figure 2As shown in the figure, in this embodiment, the tops of the clamping elastic steel plates 5 on both sides of the T-shaped slab small pier column 22 in the transverse bridge direction are open and have a certain distance from the side surface of the T-shaped slab small pier column 22. By squeezing the open clamping elastic steel plates 5 into the corresponding beam end slots 7, horizontal internal forces are generated. The equal horizontal elastic forces on both sides of the T-shaped slab small pier column 22 in the transverse bridge direction keep the change of the beam gap uniform. At the same time, the clamping effect of the beam end slots 7 on the clamping elastic steel plates 5 restricts the vertical movement of the T-shaped slab 2, ensuring that the T-shaped slab 2 closely follows the movement of the beam body without jumping out.

[0027] Furthermore, elastic steel plate anchor members 6 are embedded in the T-shaped slab small pier column 22, and the bottom of the clamping elastic steel plate 5 is fixed to the elastic steel plate anchor member 6. As Figure 2 shown, in this embodiment, multiple elastic steel plate anchor members 6 are embedded at the positions for each clamping elastic steel plate 5 in the T-shaped slab small pier column 22, and the clamping elastic steel plates 5 at the symmetric positions on both sides of the T-shaped slab small pier column 22 in the transverse bridge direction are fixed by sharing multiple elastic steel plate anchor members 6.

[0028] Further, downwardly concave step portions are provided on the top surfaces of the beam ends of the two continuous beam bodies 1 close to each other, and the two ends of the T-shaped slab track slab beam 21 are respectively arranged on the step portions of the two continuous beam bodies 1. As Figure 2 shown, in this embodiment, downwardly concave step portions are symmetrically provided on the top surfaces of the beam ends of the two continuous beam bodies 1 close to each other to facilitate placing the T-shaped slab track slab beam 21, and the top surface of the T-shaped slab track slab beam 21 can be flush with the top surfaces of the continuous beam bodies 1 on its left and right sides.

[0029] Furthermore, T-shaped slab small bearings 4 are provided at the corners of the step portions, and the two ends of the T-shaped slab track slab beam 21 are respectively arranged on the T-shaped slab small bearings 4 on the step portions of the two continuous beam bodies 1. As Figure 2 and Figure 4 shown, in this embodiment, T-shaped slab small bearings 4 are provided at the corners of the step portions of the two continuous beam bodies 1, and T-shaped slab small bearings 4 are provided at both ends in the transverse bridge direction at the corners of the step portions of each continuous beam body 1.

[0030] Further, functional components are installed on both sides of the T-shaped slab track slab beam 21 in the longitudinal bridge direction. As Figure 3 and Figure 4 shown, in this embodiment, the functional components on the continuous beam body 1 in the area of the T-shaped slab track slab beam 21 are transferred to the T-shaped slab track slab beam 21, and the length of the T-shaped slab track slab beam 21 is 3.096 meters, which is the standard length of a functional component.

[0031] Furthermore, the beam ends of two continuous beam bodies 1 that are close to each other are respectively installed on the bridge piers through longitudinal movable bearings 3. The application of the end slab structure of the conventional conductive high-speed maglev in a continuous beam with two spans in one joint is as Figure 1 shown. A T-shaped end slab 2 is provided at the pier top of the movable beam ends of two continuous beam bodies 1. The movable beam ends of the two continuous beam bodies 1 that are close to each other are respectively installed on the same bridge pier through longitudinal movable bearings 3, and the middle parts of the two continuous beam bodies 1 are respectively installed on the corresponding bridge piers through longitudinal fixed bearings 8.

[0032] In this embodiment, the protruding sharp points generated by the angular deformation between the beams can be smoothed, thereby reducing the unevenness of the bridge deck (i.e., the track surface), which is beneficial to the smoothness of high-speed driving. At the same time, the beam gap between the two beam ends can be evenly divided into two, halving the gap width. In this way, the electromagnetic force response of the maglev spindle when passing through the beam gap is effectively reduced, which is also beneficial to safe driving and the service durability of related devices such as functional components and coil spindles. It can be used for the conventional conductive high-speed maglev railway with a speed of 600 km / h.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A structure of the end connection slab of a conventional-conduction high-speed maglev beam, characterized in that: It includes a T-shaped slab and two continuous beam bodies; the T-shaped slab includes a T-shaped slab track slab beam and T-shaped slab small piers connected to the bottom surface of the T-shaped slab track slab beam; both ends of the T-shaped slab track slab beam are respectively arranged on the two continuous beam bodies, and the T-shaped slab small piers are arranged between the two continuous beam bodies; clamping elastic steel plates are fixed on both sides of the T-shaped slab small piers in the transverse direction of the bridge, and beam end clamping grooves are respectively arranged on the side surfaces of the beam ends of the two continuous beam bodies close to each other, and the clamping elastic steel plates on both sides of the T-shaped slab small piers are respectively clamped in the beam end clamping grooves of the two continuous beam bodies; the bottom of the clamping elastic steel plate is fixedly connected with the T-shaped slab small pier, and the top of the clamping elastic steel plate is opened and clamped in the beam end clamping groove; T-shaped slab small bearings are arranged on both of the two continuous beam bodies, and both ends of the T-shaped slab track slab beam are respectively arranged on the T-shaped slab small bearings of the two continuous beam bodies; downwardly concave step parts are respectively arranged on the top surfaces of the beam ends of the two continuous beam bodies close to each other, and both ends of the T-shaped slab track slab beam are respectively arranged on the step parts of the two continuous beam bodies.

2. The end plate structure of a conventional superconducting high-speed maglev beam according to claim 1, characterized in that: Two clamping elastic steel plates are fixed on each side of the T-shaped slab small pier in the transverse direction of the bridge, and two corresponding beam end clamping grooves are respectively arranged on the side surfaces of the beam ends of the two continuous beam bodies close to each other.

3. The end slab structure of a conventional conductive high-speed maglev beam according to claim 1, characterized in that: Elastic steel plate anchor fittings are embedded in the T-shaped slab small pier, and the bottom of the clamping elastic steel plate is fixed to the elastic steel plate anchor fittings.

4. The end connection plate structure of a conventional superconducting high-speed maglev beam according to claim 1, characterized in that: T-shaped slab small bearings are arranged at the corners of the step parts, and both ends of the T-shaped slab track slab beam are respectively arranged on the T-shaped slab small bearings on the step parts of the two continuous beam bodies.

5. The end plate structure of a conventional superconducting high-speed maglev beam according to claim 1, characterized in that: Functional components are installed on both sides of the T-shaped slab track slab beam in the longitudinal direction of the bridge.

6. The end plate structure of a conventional superconducting high-speed maglev beam according to claim 1, characterized in that: The beam ends of the two continuous beam bodies close to each other are respectively installed on the bridge piers through longitudinal movable bearings.

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