A method for designing the top surface characteristic shape of an assembled track support structure

Abstract

The present invention discloses a method for designing the characteristic shape of the top surface of an assembled track support structure, comprising the following steps: determining the angle of the bottom contact surface of the assembled track component; determining the required rotation angle around the inner rail; determining the angle division based on the rotation angle; determining the number of contact surfaces required for the characteristic top surface of the support block structure; determining the top surface angles of the contact surfaces in one-to-one correspondence with the support block structure; and combining the top surface angles of the contact surfaces to obtain the top surface of the support block, wherein the top surface of the support block is convex. The present invention is used for the rapid construction of the support structure of the assembled track in rail transit, improves the degree of fit and support stability between the support structure and the assembled ballastless track, effectively reduces the use of on-site fixing frames, and saves installation and construction time. The present invention fully fits with the bottom surface of the track component from both the inner and outer sides, thereby achieving stable support for the track at the required angle and improving construction efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transportation, and in particular relates to a method for designing the top surface characteristic shape of an assembled track support structure. Background Art

[0002] During urban rail design, to ensure sufficient centripetal support for trains turning, the outer rail is often raised to accommodate the required track elevation changes at curves on elevated lines. Currently, the construction of such track elevation change sections is complex, requiring construction workers to first suspend the prefabricated track to the installation location. Then, according to the angle requirements specified in the design drawings, the track components are rotated around the inner rail to a certain angle. Special fixtures or square concrete pads are used to secure the track components before subsequent grouting and other processes can be carried out. Due to the large size of prefabricated track components, rotating them to specific angles and installing fixed supports requires high operator skill, making it difficult to improve construction efficiency.

[0003] Therefore, considering improving the top surface shape of the supporting structure, a characteristic top surface shape design method is proposed, so that the top surface of the supporting structure can be fully fitted with the bottom of the assembled track with different rotation angles, achieving stable support while simplifying construction operation requirements and improving construction efficiency. Summary of the Invention

[0004] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a method for designing the characteristic shape of the top surface of an assembled track support structure.

[0005] The technical solution of the present invention is: a method for designing the top surface characteristic shape of an assembled track support structure, comprising the following steps:

[0006] A. Determine the angle of the bottom contact surface of the assembled track component;

[0007] B. Determine the required rotation angle around the inner rail;

[0008] C. Determine the angle index based on the rotation angle;

[0009] D. Determine the number of contact surfaces required for the characteristic top surface of the support block structure;

[0010] E. Determine the top surface angle corresponding to the contact surface for the support block structure;

[0011] F. Based on the top surface angle of the contact surface, the top surface of the support block is obtained by combination, and the top surface of the support block is convex.

[0012] Furthermore, step A determines the angle of the bottom contact surface of the assembled track component. The specific process is as follows:

[0013] First, determine the prefabricated track components;

[0014] Then, based on the determined assembled track component, its bottom contact surface and horizontal surface are obtained;

[0015] Finally, the initial angle α between the bottom contact surface of the prefabricated track component and the horizontal plane is recorded.

[0016] Furthermore, step B determines the required rotation angle around the inner rail, and the specific process is as follows:

[0017] First, during construction, the assembled track components are rotated around the top of the inner rail;

[0018] Then, determine the total rotation angle that the fabricated track member needs to rotate.

[0019] Furthermore, step C determines the angle division based on the rotation angle. The specific process is as follows:

[0020] Based on the rotation angle in step B, determine the angular divisions required for the prefabricated track component to be rotated during construction.

[0021] Furthermore, step D determines the number of contact surfaces required for the characteristic top surface of the support block structure, and the specific process is as follows:

[0022] First, obtain the rotation angle and angle index in step C;

[0023] Then, the number of contact surfaces of the support block structure is determined based on the rotation angle and the angular index.

[0024] Furthermore, in step E, the contact surface angle corresponding to the contact surface is determined for the support block structure. The specific process is as follows:

[0025] First, the rotation angle of the assembled track component is obtained;

[0026] Then, the final rotation position of the assembled track component is determined;

[0027] Finally, determine the top surface angle between the assembled track component and the horizontal plane during the rotation process.

[0028] Furthermore, step E includes taking the top surface angle value of the inner rail support structure and the top surface angle value of the outer rail support structure.

[0029] Furthermore, in step F, the top surface of the support block is obtained based on the top surface angle of the contact surface, and the top surface of the support block is convex. The specific process is as follows:

[0030] First, based on the top surface angle of the inner rail support structure, the inner side gradient sequence is sorted out;

[0031] Then, based on the top surface angle value of the outer rail support structure, the outer side gradient sequence is arranged;

[0032] Finally, the top surface of the support block is determined.

[0033] The beneficial effects of the present invention are as follows:

[0034] The present invention is used for the rapid construction of the support structure of the assembled track in rail transportation, improves the fit between the support structure and the assembled ballastless track and the support stability, effectively reduces the use of on-site fixing frames, and saves installation and construction time.

[0035] The present invention is fully fitted with the bottom surface of the track component from both the inner and outer sides, thereby achieving stable support for the track at a required angle and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic cross-sectional view of an assembled track component and a track building structure in an embodiment of the present invention;

[0037] Figure 2 Schematic diagram of the position and angle change of the bottom contact surface of the assembled track component at each unit rotation angle in an embodiment of the present invention;

[0038] Figure 3 Schematic diagram of the cross-section of the top surface characteristic shape designed according to the design method in an embodiment of the present invention;

[0039] Figure 4 This is a diagram showing the combination of the assembled track component at a horizontal angle and the characteristic top surface of the support structure designed according to the method of the present invention in an embodiment of the present invention;

[0040] Figure 5 This is a diagram showing the combination of the bottom of the assembled track component at an inclination angle of 5° and the characteristic top surface of the support structure designed according to the method of the present invention in an embodiment of the present invention; DETAILED DESCRIPTION

[0041] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments:

[0042] like Figures 1 to 5 As shown, a method for designing the top surface characteristic shape of an assembled track support structure includes the following steps:

[0043] A. Determine the angle of the bottom contact surface of the assembled track component;

[0044] B. Determine the required rotation angle around the inner rail;

[0045] C. Determine the angle index based on the rotation angle;

[0046] D. Determine the number of contact surfaces required for the characteristic top surface of the support block structure;

[0047] E. Determine the top surface angle corresponding to the contact surface for the support block structure;

[0048] F. Based on the top surface angle of the contact surface, the top surface of the support block is obtained by combination, and the top surface of the support block is convex.

[0049] Step A: Determine the angle of the bottom contact surface of the assembled track component. The specific process is as follows:

[0050] First, determine the prefabricated track components;

[0051] Then, based on the determined assembled track component, its bottom contact surface and horizontal surface are obtained;

[0052] Finally, the initial angle α between the bottom contact surface of the prefabricated track component and the horizontal plane is recorded.

[0053] Step B determines the required rotation angle around the inner rail. The specific process is as follows:

[0054] First, during construction, the assembled track components are rotated around the top of the inner rail;

[0055] Then, determine the total rotation angle that the fabricated track member needs to rotate.

[0056] Step C determines the angle division based on the rotation angle. The specific process is as follows:

[0057] Based on the rotation angle in step B, determine the angular divisions required for the prefabricated track component to be rotated during construction.

[0058] Step D determines the number of contact surfaces required for the characteristic top surface of the support block structure. The specific process is as follows:

[0059] First, obtain the rotation angle and angle index in step C;

[0060] Then, the number of contact surfaces of the support block structure is determined based on the rotation angle and the angular index.

[0061] Step E: Determine the contact angles corresponding to the contact surfaces of the support block structure. The specific process is as follows:

[0062] First, the rotation angle of the assembled track component is obtained;

[0063] Then, the final rotation position of the assembled track component is determined;

[0064] Finally, determine the top surface angle between the assembled track component and the horizontal plane during the rotation process.

[0065] Step E includes taking the top surface angle values ​​of the inner rail support structure and the top surface angle values ​​of the outer rail support structure.

[0066] In step F, the top surface of the support block is obtained by combining the top surface angles of the contact surfaces, and the top surface of the support block is convex. The specific process is as follows:

[0067] First, based on the top surface angle of the inner rail support structure, the inner side gradient sequence is sorted out;

[0068] Then, based on the top surface angle value of the outer rail support structure, the outer side gradient sequence is arranged;

[0069] Finally, the top surface of the support block is determined.

[0070] Specifically, in step C, the angle division is determined based on the rotation angle, and the angle division is determined in the form of equal division.

[0071] Specifically, step E determines the top surface angles of the contact surfaces corresponding to each other for the support block structure, which are divided into two types: inner and outer rails.

[0072] More specifically, the top surface angle of the inner rail support structure from the low side to the high side is the bottom contact surface angle of the assembled track member minus the unit rotation angle after equal division, that is:

[0073] The top surface angle range of the inner rail support structure from the low side to the high side is α to (α-β).

[0074] More specifically, the top surface angle of the outer rail support structure from the high side to the low side is the angle of the bottom contact surface of the assembled track component plus the unit rotation angle after equal division, that is:

[0075] The top surface angle range of the outer rail support structure from the low side to the high side is (α+β) to α.

[0076] The support block structure obtained by the above method has a characteristic top surface shape, which can be fully fitted with the bottom surface of the track component from both the inner and outer sides, thereby achieving stable support for the track at the required angle and improving construction efficiency. Example

[0077] A method for designing a top surface characteristic shape of an assembled track support structure comprises the following steps:

[0078] A. Determine the angle of the bottom contact surface of the assembled track component

[0079] like Figure 1 As shown in FIG, the initial angle α between the bottom contact surface of the prefabricated track component and the horizontal plane is designed.

[0080] A certain type of commonly used assembled track component is selected as the object. Its bottom contact surface is an inclined surface, and the angle α between it and the horizontal plane is 17°.

[0081] B. Determine the required rotation angle around the inner rail;

[0082] When designing a curve according to the outer rail height increase method commonly used in elevated line construction design, the assembled track needs to rotate around the inner rail at an angle β.

[0083] According to the Railway Track Design Specifications, the inner rail is rotated around the top of the rail during construction. In this embodiment, the total rotation angle β is 5°.

[0084] C. Determine the angle division based on the rotation angle

[0085] Based on the rotation angle, the angle division is determined by equal division.

[0086] In this embodiment, the angular division required for the assembled track component to rotate is 1°.

[0087] D. Determine the number of contact surfaces required for the characteristic top surface of the support block structure

[0088] First, according to the Euclidean geometry theorem that the interior angles of two parallel lines are equal, in order to ensure that the support block structure can fully fit the bottom of the assembled track at different rotation angles, the top surface of the contact portion of the support block structure and the bottom surface of the track at that angle must be parallel to each other, that is, they must have the same horizontal angle.

[0089] Then, according to the number of rotation angle divisions, the gradient angle of the top surface of the support block structure is designed.

[0090] like Figure 2 As shown, with a rotation index of 1° and a total rotation angle of 5°, there are 6 inclination levels on the bottom surface of the assembled track from 0 to 5°. Therefore, the top surface of the supporting structure also needs to be designed with contact surfaces at 6 corresponding angles.

[0091] E. For the support block structure, determine the top surface angle corresponding to the contact surface

[0092] First, during construction, the bottom contact surfaces of the assembled track components on both sides need to be rotated around the top of the inner track. That is, with the top of the inner track as the center of the circle, a line is drawn connecting the center of the circle and the bottom contact surfaces of the inner and outer track components respectively.

[0093] Then, geometrically consider it as two circles of different sizes with a secant line (the bottom contact surface of the inner and outer track members) rotating around the center of the circle (the top of the inner rail);

[0094] Finally, according to the principles of geometry, when the secant line in a circle rotates around the center of the circle, the angle between the secant line and the radius remains unchanged.

[0095] For the assembled track member used in this embodiment, the angle between the inner bottom contact surface and the rotation radius is 58°, and the angle between the outer bottom contact surface and the rotation radius is 27°.

[0096] Since the angle α between the bottom slope of the prefabricated track component and the horizontal plane is initially 17°, the angles between the rotation radius on its inner and outer sides and the horizontal plane are 41° and 10° respectively.

[0097] As the rotation proceeds, the angle between the inner rotation radius and the horizontal plane increases by the corresponding rotation angle, while the outer rotation radius decreases by the corresponding rotation angle.

[0098] As can be seen from the accompanying drawings, when rotated to the final position, the angles between the rotation radius on the inner and outer sides and the horizontal plane are 46° and 5° respectively.

[0099] At the same time, the angle between the total contact surface and the rotation radius remains unchanged (inside: 58°, outside: 27°). It can be obtained that during the rotation process, the angles between the bottom contact surfaces of the inner and outer sides of the track components and the horizontal plane are 12-17° and 17-22°, respectively.

[0100] According to the parallel theorem, the top surface angles of the inner and outer support structures are 12-17° and 17-22° respectively.

[0101] F. Based on the top surface angle of the contact surface, the top surface of the support block is obtained by combination, and the top surface of the support block is convex.

[0102] In order to ensure that the support block can effectively support the bottom surface of the track component with different rotation angles, it is necessary to ensure that the top surface of the support block is a convex structure. Therefore, the obtained top surface angles are combined and sorted to obtain a continuous gradient convex characteristic top surface of the inner and outer support structures.

[0103] For the supporting structure on one side of the inner rail, the characteristic angle of its top surface from the low side to the high side of the supporting structure is α~(α-β), and its gradient top surface angles are 12°, 13°, 14°, 15°, 16°, and 17° respectively.

[0104] For the supporting structure on one side of the outer rail, the characteristic angle of its top surface from the low side to the high side of the supporting structure is (α+β)~α, and its gradient top surface angles are 22°, 21°, 20°, 19°, 18°, and 17°, respectively.

[0105] During the construction process, the construction workers adjust the angle of the prefabricated track through the suspension device, and then quickly push the support structure with a characteristic top surface shape made according to the above design method under the prefabricated track from both sides of the inner and outer rails until the gradient top surface of the corresponding angle is completely in contact with the bottom surface of the prefabricated track, thus completing the fixation of the prefabricated track and improving construction efficiency. Figure 4 and Figure 5 The figures show the combination of the characteristic top surface shape of the support structure designed by the design method of the present invention and the assembled track component under no rotation and maximum rotation angles. It can be seen that while meeting the design elevation change, the top surface of the new type of gradually changing support structure and the bottom of the assembled track component achieve a good surface connection, effectively providing stable support.

Claims

1. A method for designing the top surface characteristic shape of an assembled track support structure, characterized by: The following steps are involved: A. Determine the angle of the bottom contact surface of the assembled track component; B. Determine the required rotation angle around the inner rail; C. Determine the angle index based on the rotation angle; D. Determine the number of contact surfaces required for the characteristic top surface of the support block structure; E. Determine the top surface angle corresponding to the contact surface for the support block structure; F. Based on the top surface angle of the contact surface, the top surface of the support block is obtained by combination, and the top surface of the support block is convex.

2. The method for designing the top surface characteristic shape of an assembled track support structure according to claim 1, characterized in that: Step A: Determine the angle of the bottom contact surface of the assembled track component. The specific process is as follows: First, determine the prefabricated track components; Then, based on the determined assembled track component, its bottom contact surface and horizontal surface are obtained; Finally, the initial angle α between the bottom contact surface of the prefabricated track component and the horizontal plane is recorded.

3. The method for designing the top surface characteristic shape of an assembled track support structure according to claim 1, characterized in that: Step B determines the required rotation angle around the inner rail. The specific process is as follows: First, during construction, the assembled track components are rotated around the top of the inner rail; Then, determine the total rotation angle that the fabricated track member needs to rotate.

4. The method for designing the top surface characteristic shape of an assembled track support structure according to claim 1, characterized in that: Step C determines the angle division based on the rotation angle. The specific process is as follows: Based on the rotation angle in step B, determine the angular divisions required for the prefabricated track component to be rotated during construction.

5. The method for designing the top surface characteristic shape of an assembled track support structure according to claim 1, characterized in that: Step D determines the number of contact surfaces required for the characteristic top surface of the support block structure. The specific process is as follows: First, obtain the rotation angle and angle index in step C; Then, the number of contact surfaces of the support block structure is determined based on the rotation angle and the angular index.

6. The method for designing the top surface characteristic shape of an assembled track support structure according to claim 1, characterized in that: Step E: Determine the contact angles corresponding to the contact surfaces of the support block structure. The specific process is as follows: First, the rotation angle of the assembled track component is obtained; Then, the final rotation position of the assembled track component is determined; Finally, determine the top surface angle between the assembled track component and the horizontal plane during the rotation process.

7. The method for designing the top surface characteristic shape of an assembled track support structure according to claim 1, characterized in that: Step E includes taking the top surface angle values ​​of the inner rail support structure and the top surface angle values ​​of the outer rail support structure.

8. The method for designing the top surface characteristic shape of an assembled track support structure according to claim 7, characterized in that: In step F, the top surface of the support block is obtained by combining the top surface angles of the contact surfaces, and the top surface of the support block is convex. The specific process is as follows: First, based on the top surface angle of the inner rail support structure, the inner side gradient sequence is sorted out; Then, based on the top surface angle value of the outer rail support structure, the outer side gradient sequence is arranged; Finally, the top surface of the support block is determined.

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