Inner side limiting adjustable trapezoidal sleeper track with auxiliary long sleepers and construction method of inner side limiting adjustable trapezoidal sleeper track

Abstract

The invention discloses an inner side limiting adjustable trapezoidal sleeper track with an auxiliary long sleeper and a construction method of the inner side limiting adjustable trapezoidal sleeper track. The sleeper track adopts an inner side limiting mode and has a function of adjusting the distance between inner side limiting components; the rail comprises a novel trapezoidal sleeper structure, auxiliary long sleepers are arranged below anti-vibration pads respectively, the auxiliary long sleepers and bases of ladder sleepers are poured into a whole, and longitudinal and transverse limiting of the trapezoidal sleepers is achieved through interaction of adjustable limiting plates, anti-friction layers and buffering pads which are arranged on the inner sides of longitudinal beams and the auxiliary long sleepers. According to the scheme, the problems that in the prior art, empty hoisting and hard-to-hard collision of trapezoid sleepers can be possibly generated can be solved, and the dependency of trapezoid sleeper tracks on construction is reduced; the limiting surface acting with the anti-vibration pad and the buffering pad of the trapezoidal sleeper can be monitored more comprehensively, and inspection and overhaul are facilitated; the width of the trapezoidal sleeper track is reduced, the occupied line space and the material consumption are reduced, and the purposes of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail transportation, and in particular relates to an inner-side-limited adjustable trapezoidal sleeper track with auxiliary long sleepers and a construction method thereof. Background Art

[0002] The traditional trapezoidal sleeper is a frame-type track structure consisting of two prestressed concrete longitudinal beams, transverse connecting rods, vibration-damping pads, and buffer pads. Vibration-damping pads and buffer pads are respectively provided on the lower and outer sides of the longitudinal beams, and a limiting boss is provided on the outer side of the longitudinal beam. The traditional trapezoidal sleeper track is provided with an L-shaped roadbed. The longitudinal limitation of the trapezoidal sleeper track is achieved through the interaction between the limiting boss buffer pad and the roadbed stop, and the lateral limitation of the trapezoidal sleeper track is achieved through the interaction between the buffer pad on the outer side of the longitudinal beam and the stop. However, the limiting boss structure causes the traditional trapezoidal sleeper to occupy a large space, especially for areas with limited space dimensions such as tunnels. In addition, the buffering and vibration-damping structure at the limiting boss is easily damaged and difficult to repair and replace.

[0003] The construction of traditional trapezoidal sleepers requires that the track row be erected above the steel cage first, and then the concrete support is poured. During this process, isolation materials and wrapping sleeves are needed to isolate the trapezoidal sleepers from the surrounding concrete to prevent the trapezoidal sleepers from adhering to the cast-in-place concrete. However, during the construction process, the on-site workers' operations are inevitably not precise enough, and it is impossible to ensure that all relevant specifications are met. When the wrapping sleeve or isolation material is damaged, missing or improperly installed, the bottom support of the trapezoidal sleeper is easily adhered to the trapezoidal sleeper during pouring, forming a "hard collision", resulting in the vibration damping pad being unable to play a role; on the other hand, in some unfavorable circumstances, due to the small concrete slump or the large curve superelevation value, the on-site vibration is not in place, which can easily lead to voids under the vibration damping pad; in addition, the on-site installation of the wrapping sleeve will also increase the laying cost.

[0004] Based on this, the inventors have conducted in-depth research on the existing trapezoidal sleeper track and its construction method, in the hope of designing a trapezoidal sleeper track structure and a corresponding construction method that can solve the above problems. Summary of the Invention

[0005] In order to overcome the above problems, the inventors have conducted intensive research and designed a trapezoidal sleeper track with an adjustable inner limit and auxiliary long sleepers, and a construction method thereof. The sleeper track adopts an inner limit method and has the function of adjusting the spacing of the inner limit components; the track includes a new trapezoidal sleeper structure, and auxiliary long sleepers are respectively arranged under the vibration-damping pads, and the auxiliary long sleepers and the base of the ladder sleepers are cast as one. The longitudinal and transverse limits of the trapezoidal sleepers are achieved by interacting with the adjustable limit plates, wear-reducing layers and buffer pads arranged on the inner side of the longitudinal beams and the auxiliary long sleepers. This solution can solve the problems of empty hanging and hard collision of trapezoidal sleepers in the prior art, and reduce the dependence of the trapezoidal sleeper track on construction; the limiting surfaces that interact with the trapezoidal sleeper vibration-damping pads and buffer pads can be more comprehensively monitored, which is convenient for inspection and maintenance; the width of the trapezoidal sleeper track is reduced, the line space occupied and the material consumption are reduced, and the purpose of energy saving and emission reduction is achieved, thereby completing the present invention.

[0006] Specifically, the object of the present invention is to provide a trapezoidal sleeper track with an auxiliary long sleeper and adjustable inner limit, comprising:

[0007] Two longitudinal beams 1 and connecting steel pipes 2 for connecting the longitudinal beams 1, and the two longitudinal beams 1 are consolidated into a trapezoidal sleeper through the connecting steel pipes 2;

[0008] An auxiliary long pillow is laid under the longitudinal beam 1;

[0009] The laying direction of the auxiliary long pillow is perpendicular to the extension direction of the longitudinal beam 1, and the auxiliary long pillow is provided with multiple ones, which are arranged at intervals from each other, wherein the auxiliary long pillow located in the middle is the middle auxiliary long pillow 3, and the auxiliary long pillows located at the edge are the end auxiliary long pillows 4;

[0010] The auxiliary bolster and the base below it are cast into an integral structure;

[0011] An adjustable limiting plate 5 is installed on the inner side of the longitudinal beam 1;

[0012] A raised portion 6 is provided above the middle portion of the middle auxiliary bolster 3.

[0013] The adjustable limiting plate 5 cooperates with the raised portion 6 to provide horizontal limiting for the trapezoidal sleeper.

[0014] A vibration-damping pad 7 is provided between the longitudinal beam 1 and the auxiliary bolster.

[0015] Among them, a pre-buried sleeve 8 is provided inside the longitudinal beam 1.

[0016] The lower portion of the adjustable limiting plate 5 is a stud 9 , and the adjustable limiting plate 5 is fixed to the longitudinal beam 1 by screwing the stud 9 into engagement with the embedded sleeve 8 .

[0017] The thread pitch of the stud 9 is 1 mm.

[0018] The end of the protrusion 6 adjacent to the longitudinal beam 1 is a side end, and a predetermined gap is left between the side end and the longitudinal beam 1; a buffer pad 10 and a friction-reducing layer 11 are provided on the side end;

[0019] The extension amount of the adjustable limiting plate 5 relative to the longitudinal beam is adjusted by rotating the adjustable limiting plate 5 so that the adjustable limiting plate 5 can be closely attached to the wear-reducing layer 11 and appropriately compress the buffer pad 10 .

[0020] The adjustable limit plate 5 further comprises a transverse limit plate 12 and a longitudinal limit plate 13 which are arranged perpendicular to each other, wherein the longitudinal limit plate 13 is installed on the upper portion of the transverse limit plate 12;

[0021] A rectangular groove 14 is provided at the side end and the top end of the protrusion 6, and the extension surface of the rectangular groove 14 is perpendicular to the extension direction of the longitudinal beam;

[0022] The rectangular groove 14 can accommodate the longitudinal limiting plate 13;

[0023] The buffer pad 10 is covered with the inner side surface of the rectangular groove 14 and the side end of the protrusion 6 ; the wear-reducing layer 11 is adhered to the buffer pad 10 .

[0024] Wherein, the auxiliary long pillow is a prefabricated reinforced concrete block.

[0025] A steel truss 15 is provided at the bottom of the auxiliary long sleeper, and the auxiliary long sleeper and the steel truss 15 are cast together with the base 16 below to form an integral structure;

[0026] A connecting sleeve 17 is pre-buried on the top of the auxiliary long sleeper, and the connecting sleeve 17 is used to temporarily fix the auxiliary long sleeper and the trapezoidal sleeper during construction.

[0027] The present invention also provides a construction method for an inner-limited adjustable trapezoidal sleeper track with an auxiliary long sleeper, the construction method comprising the following steps:

[0028] Step 1: Arrange the auxiliary long sleepers precisely and horizontally according to the position of the vibration damping pad 7 under the trapezoidal sleeper, arrange the end auxiliary long sleepers 4 at both ends of the longitudinal beam 1, and arrange the middle auxiliary long sleeper 3 in the middle of the longitudinal beam 1;

[0029] Step 2: Measure the length of the raised portion 6 on the middle auxiliary bolster 3 to an accuracy of 0.2 mm.

[0030] Step 3: Measure the net distance between the raised portion 6 on the middle auxiliary bolster 3 and the longitudinal beam 1 to an accuracy of 0.2 mm, and fine-tune the distance by screwing the adjustable limit plate 5. After the adjustable limit plate 5 is rotated, ensure that the longitudinal limit plate 13 is perpendicular to the length direction of the longitudinal beam 1.

[0031] Step 4: Align the rectangular groove 14 of the raised portion 6 with the longitudinal limit plate 13 of the adjustable limit plate 5, lift the auxiliary long sleeper, embed the longitudinal limit plate 13 into the rectangular groove 14, and slightly squeeze the buffer pad 10, with a maximum squeezing amount of 0.5 mm, while ensuring that the vibration damping pad 7 is completely fitted with the auxiliary long sleeper; then slowly lower the assembled trapezoidal sleeper and the auxiliary long sleeper to the platform;

[0032] Step 5: Use temporary fixing tools to bind the auxiliary long sleeper and the trapezoidal sleeper together to form a fixed unit, thus completing temporary fixation;

[0033] Step 6: transport the bound fixed unit to the working location and adjust the geometry;

[0034] Step 7: The width of the base 16 is the same as the length of the auxiliary long sleeper. Before pouring the base, a base formwork is erected on the outside of the fixed unit longitudinal beam. The top of the base formwork is slightly higher than 1 / 3 of the height of the auxiliary long sleeper concrete part.

[0035] Step 8: pouring the base, pouring concrete from the middle position between the two longitudinal beams 1, and controlling the pouring height of the concrete;

[0036] Step 9: Surface the concrete base. For the straight section, set the auxiliary long pillow into an arched structure with a high center and low sides. For the curved section, set the base surface into a single slope according to the line superelevation.

[0037] Step 10: After the concrete reaches 70% of the design strength, remove the base formwork, and then remove the temporary fixing tooling after the base formwork is removed.

[0038] Among them, in step 3, the pitch of the adjustable limit plate stud 9 is 1mm, that is, the axial movement is 0.5mm per half-turn rotation. When the distance between the lateral limit plate 12 of the adjustable limit plate and the wear-reducing layer 11 is still greater than 0 after fine-tuning, continue to screw it outward half a turn to ensure that the lateral limit plate 12 and the wear-reducing layer 11 are in a slightly squeezed state.

[0039] Among them, the temporary fixing tool includes long bolts 18 and square steel pipes 19. The square steel pipes 19 are overlapped and placed on the two longitudinal beams 1. The long bolts 18 pass through the square steel pipes 19 and are screwed into the connecting sleeves 17 to press the two ends of the square steel pipes 19 onto the longitudinal beams 1, thereby binding the auxiliary long sleeper and the ladder sleeper into one to form a fixed unit.

[0040] The beneficial effects of the present invention include:

[0041] (1) The inner-limited adjustable trapezoidal sleeper track with auxiliary long sleepers and the construction method thereof provided by the present invention solve the problems of empty hanging and hard collision of trapezoidal sleepers in the prior art, and reduce the dependence of the trapezoidal sleeper track on construction;

[0042] (2) The inner-side limit adjustable trapezoidal sleeper track with auxiliary long sleepers and the construction method thereof provided by the present invention enable the limit surfaces interacting with the trapezoidal sleeper vibration damping pads and buffer pads to be more comprehensively monitored, facilitating inspection and maintenance;

[0043] (3) The inner-limited adjustable trapezoidal sleeper track with auxiliary long sleepers and the construction method thereof provided by the present invention do not require the casting of a roadbed stop, and the width of the trapezoidal sleeper track is reduced, thereby reducing the occupied line space and material consumption, saving costs, and achieving the purpose of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram showing the overall three-dimensional structure of the inner-side-limited adjustable trapezoidal sleeper track with auxiliary long sleepers provided by the present invention;

[0045] Figure 2 A schematic diagram showing the three-dimensional structure of a trapezoidal sleeper in a trapezoidal sleeper track with an auxiliary long sleeper provided by the present invention;

[0046] Figure 3 A schematic diagram showing the three-dimensional structure of the auxiliary long sleeper at the end of the inner side limit adjustable trapezoidal sleeper track with auxiliary long sleeper provided by the present invention;

[0047] Figure 4 A schematic diagram showing the three-dimensional structure of the auxiliary long sleeper in the middle of the trapezoidal sleeper track with adjustable inner limit provided by the present invention;

[0048] Figure 5 A schematic diagram showing the three-dimensional structure of a buffer pad and a wear-reducing layer in a trapezoidal sleeper track with an auxiliary long sleeper and adjustable inner limit provided by the present invention;

[0049] Figure 6 A schematic diagram showing the three-dimensional structure of an adjustable limit plate in a trapezoidal sleeper track with an auxiliary long sleeper provided by the present invention;

[0050] Figure 7 A cross-sectional view showing the installation of a longitudinal beam and a middle auxiliary long sleeper in a trapezoidal sleeper track with an adjustable inner limit and an auxiliary long sleeper provided by the present invention;

[0051] Figure 8 A schematic structural diagram of the inner side limit adjustable trapezoidal sleeper track with auxiliary long sleepers provided by the present invention after concrete pouring during construction is shown.

[0052] Reference numerals

[0053] 1- Stringer

[0054] 2-Connecting steel pipe

[0055] 3-Middle auxiliary long pillow

[0056] 4-End auxiliary long pillow

[0057] 5-Adjustable limit plate

[0058] 6- Raised part

[0059] 7-Vibration damping pad

[0060] 8-Buried casing

[0061] 9-stud

[0062] 10-Buffer

[0063] 11-Friction reduction layer

[0064] 12-Horizontal limit plate

[0065] 13-Longitudinal limit plate

[0066] 14-Rectangular groove

[0067] 15-Rebar truss

[0068] 16-Base

[0069] 17-Connecting sleeve

[0070] 18-long bolt

[0071] 19-square steel pipe DETAILED DESCRIPTION

[0072] The present invention will be described in further detail below with reference to the accompanying drawings and examples, through which the features and advantages of the present invention will become more clearly understood.

[0073] The word "exemplary" is used exclusively herein to mean "serving as an example, example, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0074] The present invention provides a trapezoidal sleeper track with an auxiliary long sleeper and adjustable inner limit, such as Figure 1 and Figure 2 As shown in , the sleeper track comprises: two longitudinal beams 1 and connecting steel pipes 2 for connecting the longitudinal beams 1, and the two longitudinal beams 1 are consolidated into a trapezoidal sleeper through the connecting steel pipes 2; an auxiliary long sleeper is laid under the longitudinal beams 1;

[0075] The laying direction of the auxiliary long pillow is perpendicular to the extension direction of the longitudinal beam 1, and the auxiliary long pillow is provided with multiple ones. Generally, 5-8 auxiliary long pillows can be provided under the longitudinal beam. The multiple auxiliary long pillows are arranged at intervals from each other. Among them, the auxiliary long pillow located in the middle is the middle auxiliary long pillow 3, and the auxiliary long pillows located at the edge are the end auxiliary long pillows 4.

[0076] The auxiliary long pillow is a prefabricated part, and during subsequent construction, the auxiliary long pillow and the base below it are cast into an integrated structure;

[0077] An adjustable limit plate 5 is installed on the inner side of the longitudinal beam 1; a protrusion 6 is provided above the middle of the middle auxiliary long pillow 3, and the height of the protrusion 6 is lower than the thickness of the longitudinal beam;

[0078] The adjustable limiting plate 5 and the raised portion 6 provide horizontal limiting for the trapezoidal sleeper. Such a limiting structure is simple and efficient, and the position of the buffer pad is visible and maintainable.

[0079] Preferably, a vibration-damping pad 7 is laid between the longitudinal beam 1 and the auxiliary bolster. The vibration-damping pad 7 is point-laid, and the vibration-damping pad 7 is provided at all contact surfaces between the auxiliary bolster and the longitudinal beam 1 .

[0080] Preferably, a pre-buried sleeve 8 is provided inside the longitudinal beam 1.

[0081] The lower part of the adjustable limit plate 5 is a stud 9, and the adjustable limit plate 5 is fixed to the longitudinal beam 1 by screwing the stud 9 and the embedded sleeve 8. The screwing form of the stud and the sleeve makes the protruding length of the adjustable limit plate 5 adjustable, so as to adapt to longitudinal beams and adjustable limit plates with different processing errors.

[0082] Preferably, the pitch of the stud 9 is 1 mm. This setting allows the extension and contraction of the adjustable limit plate 5 to be adjusted by 0.5 mm when the stud rotates half a circle, which just meets the adjustment amount required for construction and the compression amount of the buffer pad.

[0083] In a preferred embodiment, Figure 4 As shown in FIG, the end of the protrusion 6 adjacent to the longitudinal beam 1 is a side end, and a predetermined gap is left between the side end and the longitudinal beam 1; a buffer pad 10 and a wear-reducing layer 11 are provided on the side end;

[0084] The adjustable stopper plate 5 is rotated to adjust its extension relative to the longitudinal beam, so that the adjustable stopper plate 5 can be closely attached to the anti-friction layer 11 and appropriately compress the cushion 10. This predetermined gap ensures smooth assembly even when the machining allowances of the longitudinal beam and the raised portion are uncertain, and the gap can be eliminated by adjusting the adjustable stopper plate 5 to ensure that the adjustable stopper plate 5 fully abuts the anti-friction layer 11.

[0085] In a preferred embodiment, the adjustable limiting plate 5 further comprises a transverse limiting plate 12 and a longitudinal limiting plate 13 which are arranged perpendicular to each other. Figure 6 As shown in FIG, wherein the longitudinal limiting plate 13 is mounted on the upper portion of the transverse limiting plate 12; that is, the transverse limiting plate 12 separates the stud 9 from the longitudinal limiting plate 13. The stud 9, the transverse limiting plate 12, and the longitudinal limiting plate 13 are firmly fixed to each other, capable of transmitting a large amount of force.

[0086] A rectangular groove 14 is provided at the side end and the top end of the protrusion 6, and the extension surface of the rectangular groove 14 is perpendicular to the extension direction of the longitudinal beam;

[0087] The rectangular groove 14 can accommodate the longitudinal limit plate 13; the friction-reducing layer interacts with the adjustable limit plate to provide longitudinal and lateral limits for the trapezoidal sleeper; Figure 7 As shown in .

[0088] The cushion pad 10 is covered with the inner side of the rectangular groove 14 and the side end of the protrusion 6, as shown in FIG. Figure 5 The friction reducing layer 11 is pasted on the buffer pad 10, and the outside of the buffer pad 10 is covered with the friction reducing layer.

[0089] In a preferred embodiment, the auxiliary long pillow is a prefabricated reinforced concrete block, such as Figure 3 and Figure 4 As shown in the figure, a steel truss 15 is provided at the bottom of the auxiliary long sleeper, and the auxiliary long sleeper and the steel truss 15 are cast together with the base 16 below to form an integrated structure; a connecting sleeve 17 is pre-embedded at the top of the auxiliary long sleeper, and the connecting sleeve 17 is used to temporarily fix the auxiliary long sleeper and the trapezoidal rail sleeper during construction.

[0090] The present invention also provides a construction method for an inner-limited adjustable trapezoidal sleeper track with an auxiliary long sleeper, the construction method comprising the following steps:

[0091] Step 1: Arrange the auxiliary long sleepers precisely and horizontally according to the position of the vibration damping pad 7 under the trapezoidal sleeper, arrange the end auxiliary long sleepers 4 at both ends of the longitudinal beam 1, and arrange the middle auxiliary long sleeper 3 in the middle of the longitudinal beam 1.

[0092] Step 2: Measure the length of the raised portion 6 on the middle auxiliary bolster 3 to an accuracy of 0.2 mm.

[0093] Step 3: Measure the net distance between the raised portion 6 on the middle auxiliary bolster 3 and the longitudinal beam 1 to an accuracy of 0.2 mm, and fine-tune the distance by screwing the adjustable limit plate 5. After the adjustable limit plate 5 is rotated, ensure that the longitudinal limit plate 13 is perpendicular to the length direction of the longitudinal beam 1.

[0094] Step 4: Align the rectangular groove 14 of the raised portion 6 with the longitudinal limit plate 13 of the adjustable limit plate 5, lift the auxiliary long sleeper, embed the longitudinal limit plate 13 into the rectangular groove 14, and slightly squeeze the buffer pad 10, with a maximum squeezing amount of 0.5 mm, while ensuring that the vibration damping pad 7 is completely fitted with the auxiliary long sleeper; then slowly lower the assembled trapezoidal sleeper and the auxiliary long sleeper to the platform;

[0095] Step 5, use temporary fixing tooling to bind the auxiliary long sleeper and the trapezoidal sleeper into one, forming a fixed unit and completing temporary fixation; at this time, the horizontal limit plate 12 is tightly attached to the surface of the wear-reducing layer 11, and the longitudinal limit plate 13 is inserted into the rectangular groove 14 and tightly fitted with the wear-reducing layer 11 in the rectangular groove 14.

[0096] Step 6: transport the bound fixed unit to the working location and adjust the geometry;

[0097] Step 7: The width of the base 16 is the same as the length of the auxiliary long sleeper. Before pouring the base, a base formwork is erected on the outside of the fixed unit longitudinal beam. The top of the base formwork is slightly higher than 1 / 3 of the height of the auxiliary long sleeper concrete part.

[0098] Step 8: pouring the base, pouring concrete from the middle position between the two longitudinal beams 1, and controlling the pouring height of the concrete;

[0099] Step 9: Surface the concrete base. For the straight section, set the auxiliary long pillow into an arched structure with a high center and low sides. For the curved section, set the base surface into a single slope according to the line superelevation.

[0100] Step 10: After the concrete reaches 70% of the design strength, remove the base formwork, and then remove the temporary fixing tooling after the base formwork is removed.

[0101] Preferably, in step 3, the pitch of the adjustable limit plate stud 9 is 1 mm, that is, the axial movement is 0.5 mm per half turn. When the distance between the lateral limit plate 12 and the wear-reducing layer 11 of the adjustable limit plate is still greater than 0 after fine-tuning, continue to screw it outward half a turn to ensure that the lateral limit plate 12 and the wear-reducing layer 11 are in a slightly squeezed state.

[0102] Preferably, the temporary fixing tool comprises a long bolt 18 and a square steel pipe 19, such as Figure 8 As shown in the figure, the square steel tube 19 is overlapped and placed on the two longitudinal beams 1. The long bolts 18 pass through the square steel tube 19 and are screwed into the connecting sleeve 17 to press the two ends of the square steel tube 19 onto the longitudinal beam 1, thereby binding the auxiliary long sleeper and the ladder sleeper into one to form a fixed unit.

[0103] Example

[0104] Lay a 1000m long bridge track system, where the trapezoidal sleepers are 5900×580×185mm in size with auxiliary long sleepers and adjustable inner limit trapezoidal sleeper tracks. The sleeper tracks include: Figure 2 The ladder-shaped sleeper shown in FIG. 1 also includes Figure 3 and Figure 4 The auxiliary long pillow shown in FIG. Figure 5 The friction reducing layer and buffer pad shown in FIG are provided with Figure 6 The adjustable stop plate shown is used to cast the ballast bed base below the trapezoidal sleeper.

[0105] The following construction methods are used:

[0106] Step 1: Arrange the auxiliary long sleepers precisely and horizontally according to the position of the vibration damping pad 7 under the trapezoidal sleeper, arrange the end auxiliary long sleepers 4 at both ends of the longitudinal beam 1, and arrange the middle auxiliary long sleeper 3 in the middle of the longitudinal beam 1.

[0107] Step 2: Measure the length of the raised portion 6 on the middle auxiliary bolster 3 to an accuracy of 0.2 mm.

[0108] Step 3: Measure the net distance between the raised portion 6 on the middle auxiliary bolster 3 and the longitudinal beam 1 to an accuracy of 0.2 mm, and fine-tune the distance by screwing the adjustable limit plate 5. After the adjustable limit plate 5 is rotated, ensure that the longitudinal limit plate 13 is perpendicular to the length direction of the longitudinal beam 1.

[0109] Step 4: Align the rectangular groove 14 of the raised portion 6 with the longitudinal limit plate 13 of the adjustable limit plate 5, lift the auxiliary long sleeper, embed the longitudinal limit plate 13 into the rectangular groove 14, and slightly squeeze the buffer pad 10, with a maximum squeezing amount of 0.5 mm, while ensuring that the vibration damping pad 7 is completely fitted with the auxiliary long sleeper; then slowly lower the assembled trapezoidal sleeper and the auxiliary long sleeper to the platform;

[0110] Step 5: Use temporary fixing tools to bind the auxiliary long sleeper and the trapezoidal sleeper together to form a fixed unit, thus completing temporary fixation;

[0111] Step 6: transport the bound fixed unit to the working location and adjust the geometry;

[0112] Step 7: The width of the base 16 is the same as the length of the auxiliary long sleeper. Before pouring the base, a base formwork is erected on the outside of the fixed unit longitudinal beam. The top of the base formwork is slightly higher than 1 / 3 of the height of the auxiliary long sleeper concrete part.

[0113] Step 8: pouring the base, pouring concrete from the middle position between the two longitudinal beams 1, and controlling the pouring height of the concrete;

[0114] Step 9: Surface the concrete base. For the straight section, set the auxiliary long pillow into an arched structure with a high center and low sides. For the curved section, set the base surface into a single slope according to the line superelevation.

[0115] Step 10: After the concrete reaches 70% of the design strength, remove the base formwork, and then remove the temporary fixing tooling after the base formwork is removed.

[0116] The track system on the bridge was laid for 1,000 meters without consuming any wrapping or other isolation materials. The track bed width was 2 meters and the amount of track bed concrete used was 354.8 m 3 , the amount of track bed steel bars is 61.38t, and the amount of molds is 260m 2 A total of 15 workers participated in the work, with each worker working 100 hours. Inspection of the laid track system revealed no defects such as hard collisions and empty hangs.

[0117] Comparative Example

[0118] A 1,000-meter-long bridge track system was laid, with traditional 5900×580×185mm trapezoidal sleepers. These sleepers were equipped with limiting bosses, and lateral retaining platforms were installed on the roadbed below the sleepers. The specific construction method is as follows:

[0119] Step 1: Paste the isolation material on the bottom surface of the trapezoidal sleeper, the outer side surface and the end surface of the longitudinal beam;

[0120] Step 2: Put on the wrapping cover and take sealing measures for the wrapping cover;

[0121] Step 3: Determine the position of the trapezoidal sleeper bed and mark it with a spring line;

[0122] Step 4: Tie the base and the platform reinforcement;

[0123] Step 5: transport and install the isolated trapezoidal sleepers on the trackbed reinforcement cage;

[0124] Step 6: Support the mold, including the end mold, the center ditch mold, the base and the stopper mold;

[0125] Step 7, adjust the track geometry;

[0126] Step 8, pouring concrete from the side of the trapezoidal sleeper;

[0127] Step 9: Remove the above mold.

[0128] The above-mentioned 1000-meter-long bridge track system was laid, consuming 167 pairs of wrapping sleeves and 33.32m of isolation material pearl cotton. 3 The width of the roadbed is 2.5m, and the amount of roadbed concrete is 480m3 , the amount of track bed steel bars is 84.66t, the amount of molds is 1200m 2 A total of 15 workers participated in the work, with each worker working 130 hours. During the inspection of the laid track system, 11 hard-hitting defects and 1 hanging defect were found. 5 workers were further responsible for defect repairs, with each worker working 5 hours.

[0129] It can be seen from the above embodiments and comparative examples that the inner-limited adjustable trapezoidal sleeper track with auxiliary long sleepers and the construction method thereof provided in the present application can not only improve the construction quality, but also shorten the construction time and improve the construction efficiency.

[0130] The present invention has been described above with reference to preferred embodiments, but these embodiments are merely exemplary and serve only as illustrations. On this basis, various replacements and improvements can be made to the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A trapezoidal sleeper track with an auxiliary long sleeper and adjustable inner limit, characterized in that: include: Two longitudinal beams (1) and a connecting steel pipe (2) for connecting the longitudinal beams (1), wherein the two longitudinal beams (1) are consolidated into a trapezoidal sleeper via the connecting steel pipe (2); An auxiliary long pillow is laid under the longitudinal beam (1); The laying direction of the auxiliary long pillow is perpendicular to the extension direction of the longitudinal beam (1), and the auxiliary long pillow is provided with a plurality of them, which are arranged at intervals from each other, wherein the auxiliary long pillow located in the middle is the middle auxiliary long pillow (3), and the auxiliary long pillows located at the edge are the end auxiliary long pillows (4); The auxiliary bolster and the base below it are cast into an integral structure; An adjustable limiting plate (5) is installed on the inner side of the longitudinal beam (1); A raised portion (6) is provided above the middle portion of the middle auxiliary long pillow (3). The adjustable limiting plate (5) and the raised portion (6) cooperate to provide horizontal limiting for the trapezoidal rail sleeper.

2. The inner side limit adjustable trapezoidal sleeper track with auxiliary long sleeper according to claim 1, characterized in that: A vibration-damping pad (7) is laid between the longitudinal beam (1) and the auxiliary bolster.

3. The inner side limit adjustable trapezoidal sleeper track with auxiliary long sleeper according to claim 1, characterized in that: An embedded sleeve (8) is provided on the inner side of the longitudinal beam (1). The lower part of the adjustable limit plate (5) is a stud (9), and the adjustable limit plate (5) is fixed to the longitudinal beam (1) by screwing the stud (9) and the embedded sleeve (8).

4. The inner side limit adjustable trapezoidal sleeper track with auxiliary long sleeper according to claim 3, characterized in that: The thread pitch of the stud (9) is 1 mm.

5. The inner side limit adjustable trapezoidal sleeper track with auxiliary long sleeper according to claim 3, characterized in that: One end of the raised portion (6) adjacent to the longitudinal beam (1) is a side end, and a predetermined gap is left between the side end and the longitudinal beam (1); a buffer pad (10) and a wear-reducing layer (11) are provided on the side end; The extension of the adjustable limiting plate (5) relative to the longitudinal beam is adjusted by rotating the adjustable limiting plate (5), so that the adjustable limiting plate (5) can be closely attached to the wear-reducing layer (11) and appropriately compress the buffer pad (10).

6. The inner side limit adjustable trapezoidal sleeper track with auxiliary long sleeper according to claim 5, characterized in that: The adjustable limiting plate (5) further comprises a transverse limiting plate (12) and a longitudinal limiting plate (13) arranged perpendicular to each other, wherein the longitudinal limiting plate (13) is mounted on the upper portion of the transverse limiting plate (12); A rectangular groove (14) is provided at the side end and the top end of the raised portion (6), and the extension surface of the rectangular groove (14) is perpendicular to the extension direction of the longitudinal beam; The rectangular groove (14) is capable of accommodating the longitudinal limiting plate (13); The buffer pad (10) is covered with the inner side surface of the rectangular groove (14) and the side end of the protrusion (6); and the wear-reducing layer (11) is adhered to the buffer pad (10).

7. The inner side limit adjustable trapezoidal sleeper track with auxiliary long sleeper according to claim 1, characterized in that: The auxiliary long pillow is a prefabricated reinforced concrete block. A steel truss (15) is provided at the bottom of the auxiliary long sleeper, and the auxiliary long sleeper and the steel truss (15) are cast together with the base (16) below to form an integrated structure; A connecting sleeve (17) is pre-buried on the top of the auxiliary long sleeper, and the connecting sleeve (17) is used to temporarily fix the auxiliary long sleeper and the trapezoidal rail sleeper during construction.

8. A construction method for an inner-limited and adjustable trapezoidal sleeper track with auxiliary long sleepers, characterized in that: The construction method comprises the following steps: Step 1: Arrange the auxiliary long sleepers precisely and horizontally according to the position of the vibration damping pad (7) below the trapezoidal sleeper, arrange the end auxiliary long sleepers (4) at both ends of the longitudinal beam (1), and arrange the middle auxiliary long sleeper (3) in the middle of the longitudinal beam (1); Step 2: Measure the length of the raised portion (6) on the middle auxiliary pillow (3) to an accuracy of 0.2 mm. Step 3, measure the net distance between the raised portion (6) on the middle auxiliary bolster (3) and the longitudinal beam (1), the measurement result is accurate to 0.2mm, and fine-tune it by screwing the adjustable limit plate (5). After the adjustable limit plate (5) is rotated, it is necessary to ensure that the longitudinal limit plate (13) is perpendicular to the length direction of the longitudinal beam (1); Step 4: Align the rectangular groove (14) of the raised portion (6) with the longitudinal limit plate (13) of the adjustable limit plate (5), lift the auxiliary long sleeper, embed the longitudinal limit plate (13) into the rectangular groove (14), and slightly squeeze the buffer pad (10), with a maximum squeezing amount of 0.5 mm, while ensuring that the vibration damping pad (7) and the auxiliary long sleeper are completely fitted together; then slowly lower the assembled trapezoidal rail sleeper and the auxiliary long sleeper to the platform; Step 5: Use temporary fixing tools to bind the auxiliary long sleeper and the trapezoidal sleeper together to form a fixed unit, thus completing temporary fixation; Step 6: transport the bound fixed unit to the working location and adjust the geometry; Step 7: The width of the base (16) is the same as the length of the auxiliary long pillow. Before pouring the base, a base template is erected on the outside of the fixed unit longitudinal beam, with the top of the base template slightly higher than 1 / 3 of the height of the auxiliary long pillow concrete part; Step 8: pouring the base, pouring concrete from the middle position between the two longitudinal beams (1), and controlling the pouring height of the concrete; Step 9: Surface the concrete base. For the straight section, set the auxiliary long pillow into an arched structure with a high center and low sides. For the curved section, set the base surface into a single slope according to the line superelevation. Step 10: After the concrete reaches 70% of the design strength, remove the base formwork, and then remove the temporary fixing tooling after the base formwork is removed.

9. The construction method of the inner side limit adjustable trapezoidal sleeper track with auxiliary long sleepers according to claim 8, characterized in that: In step 3, the pitch of the adjustable limit plate stud (9) is 1 mm, that is, the axial movement is 0.5 mm per half-turn rotation. When the spacing between the lateral limit plate (12) and the wear-reducing layer (11) of the adjustable limit plate is still greater than 0 after fine adjustment, continue to screw it outward half a turn to ensure that the lateral limit plate (12) and the wear-reducing layer (11) are in a slightly squeezed state.

10. The construction method of the inner side limit adjustable trapezoidal sleeper track with auxiliary long sleepers according to claim 8, characterized in that: The temporary fixing tool comprises a long bolt (18) and a square steel pipe (19). The square steel pipe (19) is overlapped and placed on the two longitudinal beams (1). The long bolt (18) passes through the square steel pipe (19) and is screwed into the connecting sleeve (17) to press the two ends of the square steel pipe (19) onto the longitudinal beam (1), thereby binding the auxiliary long sleeper and the ladder sleeper into one body to form a fixed unit.

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