CN116180506A - Ballastless track adapting to foundation deformation and construction method thereof - Google Patents
Ballastless track adapting to foundation deformation and construction method thereof Download PDFInfo
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- CN116180506A CN116180506A CN202310443176.3A CN202310443176A CN116180506A CN 116180506 A CN116180506 A CN 116180506A CN 202310443176 A CN202310443176 A CN 202310443176A CN 116180506 A CN116180506 A CN 116180506A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Railway Tracks (AREA)
Abstract
The invention relates to a ballastless track adapting to foundation deformation and a construction method thereof, wherein the ballastless track comprises a base plate, an adjusting device, a prefabricated track plate and steel rails which are sequentially arranged from bottom to top, the adjusting device comprises a fluid adjusting layer and an elastic component, the fluid adjusting layer is arranged between the base plate and the prefabricated track plate, a valve is arranged on the fluid adjusting layer, fluid is filled into or extracted from the fluid adjusting layer through the valve to adjust the height and the rigidity of the fluid adjusting layer, two ends of the elastic component are respectively connected with the top end and the bottom end inside the fluid adjusting layer, the elastic component is configured such that when the height and the rigidity of the fluid adjusting layer are increased, the rigidity of the elastic component is reduced, and when the height and the rigidity of the fluid adjusting layer are reduced, the rigidity of the adjusting device is maintained within a set range, and the steel rails are arranged on the prefabricated track plate through a fastener system. The invention has simple structure, can adapt to foundation settlement and arch deformation, is convenient to adjust, and does not influence line operation.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to a ballastless track adapting to foundation deformation and a construction method thereof.
Background
The ballastless track has the advantages of high smoothness, high stability and strong durability, becomes a main structural form of the high-speed railway in China, and is still a track structural form for important development and construction of the high-speed railway in the future.
However, in the long-term operation process of the ballastless track, due to the complicated and changeable geological conditions of the line foundation, a part of the section has a certain degree of diseases, which are mainly represented by foundation deformation (settlement or arching and the like), and the service state of the track system and the safety and the comfort of driving are affected by the overlarge foundation deformation. At present, the ballastless track is mainly cured by adopting measures such as fastener system adjustment, grouting lifting, ballastless track replacement and the like. When the deformation of the off-line foundation is overlarge, the existing adjustment mode has the problems of long adjustment time, higher cost, influence on the normal operation of the line and the like.
Disclosure of Invention
The invention aims to provide a ballastless track adapting to foundation deformation and a construction method thereof, which have simple structure, can adapt to foundation settlement and arch deformation, are convenient to adjust and do not influence line operation.
The invention is realized by the following technical scheme:
the ballastless track suitable for foundation deformation comprises a base plate, an adjusting device, a prefabricated track plate and a steel rail which are sequentially arranged from bottom to top, wherein the adjusting device comprises a fluid adjusting layer and an elastic component, the fluid adjusting layer is arranged between the base plate and the prefabricated track plate, a valve is arranged on the fluid adjusting layer, fluid is filled into or extracted from the fluid adjusting layer through the valve to adjust the height and the rigidity of the fluid adjusting layer, the elastic component is arranged in the fluid adjusting layer and is connected with the top end and the bottom end inside the fluid adjusting layer, when the fluid adjusting layer is filled with fluid to enable the height and the rigidity of the fluid adjusting layer to be increased, the rigidity of the elastic component is reduced, and when the fluid adjusting layer is extracted from the fluid adjusting layer to enable the height and the rigidity of the fluid adjusting layer to be reduced, the rigidity of the elastic component is increased, so that the rigidity of the adjusting device is maintained within a set range, and the steel rail is arranged on the prefabricated track plate through a fastener system.
Further, the fluid adjusting layer is made of rubber materials, folds are arranged on the side wall of the fluid adjusting layer, and the folds are arranged along the circumferential direction of the fluid adjusting layer.
Further, the elastic component comprises a plurality of nonlinear springs, the plurality of nonlinear springs are divided into a plurality of groups, the plurality of groups of nonlinear springs are arranged at intervals along the width direction of the fluid adjusting layer, the nonlinear springs of the same group are arranged at intervals along the length direction of the fluid adjusting layer, and two ends of the nonlinear springs are respectively connected with the top end and the bottom end of the inside of the fluid adjusting layer.
Further, adjusting device still includes the damping subassembly, and the damping subassembly includes a plurality of spring damper and sets up the quality piece in spring damper one end, and a plurality of spring damper divide into a plurality of groups, and the width direction interval setting of fluid adjustment layer is followed to a plurality of spring damper of group, and the length direction interval setting of fluid adjustment layer is followed to the spring damper of same group, and the one end that the quality piece was kept away from to the spring damper sets up the bottom in fluid adjustment layer inside.
Further, a limit boss is arranged on the base plate, a first through hole for the limit boss to pass through is formed in the fluid adjusting layer, and a second through hole for the limit boss to pass through is formed in the prefabricated track plate.
Further, an elastic cushion layer is arranged on the outer side wall of the limit boss.
Further, the edge of the limit boss is rounded.
Further, the fluid adjusting layer comprises two independent parts, namely a left adjusting layer and a right adjusting layer, wherein the left adjusting layer and the right adjusting layer are respectively provided with a valve and an elastic component, and a limit stop block is arranged at the position of the base plate, which is located at one side of the left adjusting layer far away from the right adjusting layer, and at the position of the right adjusting layer, which is located at one side of the right adjusting layer far away from the left adjusting layer.
Further, the fluid is compressed air or liquid.
The invention also provides a construction method of the ballastless track adapting to the foundation deformation, which is used for installing the ballastless track adapting to the foundation deformation and comprises the following steps:
s1, prefabricating an adjusting device, a prefabricated track plate, a steel rail and a fastener system in a factory, and conveying the adjusting device, the prefabricated track plate, the steel rail and the fastener system to a construction site;
s2, constructing a track engineering measurement plane and a height control network, and performing construction lofting of the base plate and the prefabricated track plate;
s3, according to construction lofting positioning of the base plate, pouring the base plate on site;
s4, installing an adjusting device on the base plate, and filling fluid into the fluid adjusting layer through a valve on the fluid adjusting layer according to construction lofting positioning of the prefabricated track plate until the height of the fluid adjusting layer reaches a set height range;
s5, installing a prefabricated track plate above the adjusting device;
s6, installing a fastener system and a steel rail on the prefabricated track slab.
Compared with the prior art, the invention has the beneficial effects that:
(1) The ballastless track is simple in structure, the fluid adjusting layer is arranged between the base plate and the prefabricated track plate, the height of the fluid adjusting layer is adjusted according to the amount of filled fluid, and therefore the vertical height of the prefabricated track plate is adjusted, the ballastless track can adapt to settlement and arch deformation of an off-line foundation, adjustment is convenient, and line operation is not affected;
(2) An elastic component is arranged in the fluid adjusting layer, and can enable the rigidity of the adjusting device to be kept in a set range, so that on one hand, insufficient rigidity of the adjusting device can be prevented, the fluid adjusting layer is prevented from tilting, and on the other hand, when the fluid adjusting layer fails, the prefabricated track plate is prevented from suddenly falling to cause accidents;
(3) The adjusting device and the prefabricated track plate are prefabricated in a factory and are constructed in an assembly mode on site, construction difficulty can be effectively reduced, construction efficiency is improved, labor intensity of personnel is reduced, conditions are provided for mechanized construction, and later maintenance and repair are easier.
Drawings
FIG. 1 is a schematic structural view of a ballastless track adapted to foundation deformation in accordance with the present invention;
FIG. 2 is a top view of a ballastless track of the present invention adapted to foundation deformation;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a cross-sectional view of a ballastless track of the present invention adapted to foundation deformation;
FIG. 6 is an enlarged schematic view of a portion of a ballastless track of the present invention adapted to foundation deformation;
FIG. 7 is a schematic view of a fluid regulating layer in a ballastless track adapted to foundation deformation according to one embodiment of the present invention;
FIG. 8 is a schematic view of another embodiment of a fluid regulating layer in a ballastless track adapted to foundation deformation in accordance with the present invention.
In the figure, 1-base plate, 11-limit boss, 2-fluid adjusting layer, 21-fold, 22-left adjusting layer, 23-right adjusting layer, 24-first through hole, 3-elastic component, 4-prefabricated track plate, 5-rail, 6-valve, 7-elastic cushion layer, 8-limit stop block, 9-vibration damping component, 91 spring damper, 92-mass block.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a ballastless track adapted to foundation deformation according to the present invention. The ballastless track suitable for foundation deformation comprises a base plate 1, an adjusting device, a prefabricated track plate 4 and a steel rail 5 which are sequentially arranged from bottom to top, wherein the steel rail 5 is arranged on the prefabricated track plate 4 through a fastener system. The height of the prefabricated track slabs 4 is adjusted by adjusting means to accommodate foundation settlement and arching deformation.
Referring to fig. 2, 3, 4 and 5 in combination, fig. 2 is a top view of a ballastless track adapted to foundation deformation according to the present invention, fig. 3 is a sectional view A-A of fig. 2, fig. 4 is a sectional view B-B of fig. 2, and fig. 5 is a sectional view of a ballastless track adapted to foundation deformation according to the present invention. Specifically, the adjusting device comprises a fluid adjusting layer 2 and an elastic component 3, wherein the fluid adjusting layer 2 is arranged between the base plate 1 and the prefabricated track plate 4, a valve 6 is arranged on the fluid adjusting layer 2, and fluid is filled into or extracted from the fluid adjusting layer 2 through the valve 6 so as to adjust the height and rigidity of the fluid adjusting layer 2. The vertical height of the prefabricated track slab 4 is adjusted to rise or fall by adjusting the height of the fluid adjusting layer 2, so that the ballastless track adapting to foundation deformation adapts to foundation settlement and arch deformation under a line, and the fluid adjusting layer 2 is filled with fluid, so that the fluid adjusting layer 2 also has a vibration reduction function. In one embodiment, the fluid is compressed air or a liquid.
Referring to fig. 6 in combination, fig. 6 is an enlarged schematic view of a ballastless track adapted to foundation deformation according to the present invention. In an embodiment, the fluid adjusting layer 2 is made of a rubber material, and the sidewall of the fluid adjusting layer 2 is provided with folds 21, and the folds 21 are arranged along the circumferential direction of the fluid adjusting layer 2. The fluid regulating layer 2 is made of rubber material, and folds 21 are arranged on the side wall of the fluid regulating layer 2, and the fluid regulating layer 2 is a telescopic deformation closed space through compression and extension of the folds 21. Thereby filling the fluid regulating layer 2 through the valve 6 or withdrawing the fluid in the fluid regulating layer 2 through the valve 6, changing the volume of fluid in the fluid regulating layer 2 to change the height or stiffness of the fluid regulating layer 2. The number of the pleats 21 may be determined according to actual requirements, and if the number of the pleats 21 is two or more, the two or more pleats 21 are arranged at intervals in the thickness direction of the fluid regulating layer 2. In one embodiment, the number of valves 6 on the fluid regulating layer 2 is more than two. By providing more than two valves 6, the speed of filling or extracting fluid into or from the fluid regulating layer 2 is increased. In one embodiment, the current regulating layer is adhesively connected to the prefabricated track panel 4. With this arrangement, separation of the precast track slabs 4 from the fluid regulatory layer 2 is prevented from occurring when the train passes through the ballastless track.
The elastic member 3 is disposed in the fluid regulating layer 2 and connected to the top and bottom ends inside the fluid regulating layer 2, the elastic member 3 being configured to decrease the rigidity of the elastic member 3 when the fluid regulating layer 2 is filled with the fluid such that the height and rigidity of the fluid regulating layer 2 are increased, and the elastic member 3 being configured to increase the rigidity of the elastic member 3 when the fluid is drawn out of the fluid regulating layer 2 such that the height and rigidity of the fluid regulating layer 2 are decreased, so that the rigidity of the regulating device is maintained within a set range. The rigidity of the adjusting means is the sum of the rigidity of the fluid adjusting layer 2 and the rigidity of the elastic component 3, the rigidity of the elastic component 3 is related to the rigidity of the fluid adjusting layer 2, when the fluid adjusting layer 2 is filled with fluid so that the height and the rigidity of the fluid adjusting layer 2 are increased, the rigidity of the elastic component 3 is reduced with the increase of the rigidity of the fluid adjusting layer 2, and when the fluid is pumped out of the fluid adjusting layer 2 so that the height and the rigidity of the fluid adjusting layer 2 are reduced, the rigidity of the elastic component 3 is increased with the decrease of the rigidity of the fluid adjusting layer 2. Specifically, when the fluid adjusting layer 2 is filled with fluid, the height and rigidity of the fluid adjusting layer 2 are increased, the elastic member 3 is stretched by the fluid adjusting layer 2 and the rigidity is reduced, when the fluid is pumped into the fluid adjusting layer 2, the height and rigidity of the fluid adjusting layer 2 are reduced, the elastic member 3 is compressed by the fluid adjusting layer 2 and the rigidity is increased, so that the height of the adjusting device is variable, and the rigidity of the adjusting device is maintained within a set range, so that the adjusting device can provide an effective supporting function and vibration damping function to the prefabricated track plate 4, and the fluid adjusting layer 2 is prevented from tilting. And by providing the elastic member 3, the elastic member 3 can prevent the prefabricated track panel 4 from suddenly falling to cause an accident when the fluid regulating layer 2 fails.
In an embodiment, the elastic component 3 includes a plurality of nonlinear springs, the plurality of nonlinear springs are divided into a plurality of groups, the plurality of groups of nonlinear springs are arranged at intervals along the width direction of the fluid regulating layer 2, the nonlinear springs of the same group are arranged at intervals along the length direction of the fluid regulating layer 2, and two ends of the nonlinear springs are respectively connected with the top end and the bottom end inside the fluid regulating layer 2. The stiffness of the nonlinear spring can be set according to the train dynamic load, the setting range of the stiffness of the adjusting device and the initial stiffness of the fluid adjusting layer 2. In a normal state, the rigidity of the adjusting device is within a set range, the set range being [ k1, k2]. When the fluid adjusting layer 2 is filled with fluid, the amount of fluid in the fluid adjusting layer 2 is increased, so that the height of the fluid adjusting layer 2 is increased, and the rigidity of the fluid adjusting layer 2 is increased, while in the process of increasing the height of the fluid adjusting layer 2, the tensile force of the nonlinear spring is stretched, so that the rigidity of the nonlinear spring is reduced, and the rigidity of the elastic component 3 is reduced, so that the sum of the rigidity of the fluid adjusting layer 2 and the rigidity of the nonlinear spring is still within a set range [ k1, k2], namely, the rigidity of the adjusting device is within the set range [ k1, k2]. When the fluid in the fluid adjusting layer 2 is pumped, the amount of the fluid in the fluid adjusting layer 2 is reduced, so that the height of the fluid adjusting layer 2 is reduced, the rigidity of the fluid adjusting layer 2 is reduced, and in the process of reducing the height of the fluid adjusting layer 2, the nonlinear spring is compressed by pressure, so that the rigidity of the nonlinear spring is increased, and the rigidity of the elastic component 3 is increased, so that the sum of the rigidity of the fluid adjusting layer 2 and the rigidity of the nonlinear spring is still within a set range [ k1, k2], namely, the rigidity of the adjusting device is within the set range [ k1, k2]. The stiffness of the nonlinear spring can be changed along with the change of the height (deformation) of the fluid adjusting layer 2 by adopting the nonlinear spring, so that the stiffness synergistic effect of the nonlinear spring and the fluid adjusting layer 2 is realized, the constant stiffness of the adjusting device is maintained, and the constant stiffness of the ballastless track is maintained.
In an embodiment, the adjusting device further comprises a vibration reduction assembly 9, the vibration reduction assembly 9 comprises a plurality of spring dampers 91 and a mass block 92 arranged at one end of the spring dampers 91, the plurality of spring dampers 91 are divided into a plurality of groups, the plurality of groups of spring dampers 91 are arranged at intervals along the width direction of the fluid adjusting layer 2, the spring dampers 91 of the same group are arranged at intervals along the length direction of the fluid adjusting layer 2, and one end, away from the mass block 92, of the spring dampers 91 is arranged at the bottom end inside the fluid adjusting layer 2. The vibration reduction assembly is arranged in the fluid adjustment layer 2 and is connected with the bottom end of the interior of the fluid adjustment layer 2, so that vibration of the ballastless track can be reduced, parameters of the mass block 92 and the spring damper 91 can be adjusted according to vibration reduction requirements of the ballastless track at different sections, vibration reduction requirements of the ballastless track at different sections can be met, and the vibration reduction requirements of the ballastless track can be reduced.
Referring to fig. 7 in combination, fig. 7 is a schematic structural diagram of an embodiment of a fluid adjusting layer in a ballastless track adapted to foundation deformation according to the present invention. In an embodiment, the base plate 1 is provided with a limiting boss 11, the fluid adjusting layer 2 is provided with a first through hole 24 for the limiting boss 11 to pass through, and the prefabricated track plate 4 is provided with a second through hole for the limiting boss 11 to pass through. The positions of the fluid adjusting layer 2 and the prefabricated track plate 4 are limited by the limiting boss 11, so that a stable force transfer system is formed, the longitudinal and transverse positioning of the ballastless track is realized, and the stability of the ballastless track structure is ensured. In an embodiment, the distance between the top end of the limiting boss 11 and the top end of the prefabricated track plate 4 is greater than or equal to the height that the adjusting device can adjust the prefabricated track plate 4, so that the limiting boss 11 still has good longitudinal and transverse limiting functions when the height of the prefabricated track plate 4 is adjusted by the adjusting device. Specifically, if the height adjustment amount of the adjustment device to the prefabricated track plate 4 is-50 mm-100 mm, the distance between the top end of the limiting boss 11 and the top end of the prefabricated track plate 4 is greater than or equal to 100mm. In one embodiment, the base plate 1 and the limit boss 11 are integrally cast.
In one embodiment, the elastic cushion 7 is provided on the outer sidewall of the limit boss 11. The elastic cushion 7 can effectively prevent the rigid contact of the prefabricated track plate 4 and the limiting boss 11, prevent the prefabricated track plate 4 and the limiting boss 11 from cracking due to the rigid contact, and prolong the service lives of the prefabricated track plate 4 and the limiting boss 11. In one embodiment, the elastic cushion 7 is made of rubber or polyurethane material.
In one embodiment, the edges of the limiting boss 11 are rounded. The edge of spacing boss 11 adopts the chamfer to handle, and first through-hole 24 and second through-hole are suited with spacing boss 11, and the edge of the pore wall of first through-hole 24 and second through-hole also is the chamfer setting, can prevent to appear stress concentration and destroy.
Referring to fig. 8 in combination, fig. 8 is a schematic diagram of another embodiment of a fluid adjusting layer in a ballastless track adapted to foundation deformation according to the present invention. In one embodiment, the fluid regulating layer 2 comprises two independent parts, namely a left regulating layer 22 and a right regulating layer 23, wherein the valve 6 and the elastic component 3 are arranged on the left regulating layer 22 and the right regulating layer 23, and the limit stop block 8 is arranged on the base plate 1 at the position of one side of the left regulating layer 22 far away from the right regulating layer 23 and at the position of one side of the right regulating layer 23 far away from the left regulating layer 22. The left adjusting layer 22 and the right adjusting layer 23 are both U-shaped, and two ends of the left adjusting layer 22U-shaped are respectively in butt joint with two ends of the right adjusting layer 23U-shaped to form a rectangular frame structure, the rectangular frame structure is sleeved outside the limiting boss 11, and the rectangular frame structure is matched with the limiting stop block 8 positioned on one side of the left adjusting layer 22 and one side of the right adjusting layer 23 to realize longitudinal and transverse positioning of the fluid adjusting layer 2, and meanwhile the fluid adjusting layer 2 is divided into two independent parts, so that the fluid adjusting layer 2 is convenient to replace.
The invention also provides a construction method of the ballastless track adapting to the foundation deformation, which is used for installing the ballastless track adapting to the foundation deformation and comprises the following steps:
s1, prefabricating an adjusting device, a prefabricated track slab 4, a steel rail 5 and a fastener system in a factory, and conveying the adjusting device, the prefabricated track slab 4, the steel rail 5 and the fastener system to a construction site;
s2, constructing a track engineering measurement plane and an elevation control network, and performing construction lofting of the base plate 1 and the prefabricated track plate 4;
s3, pouring the base plate 1 on site according to the construction lofting positioning of the base plate 1;
in the above step S3, when the base plate 1 is poured, the limiting boss 11 on the base plate 1 may be integrally poured, so as to limit the positions of the fluid adjusting layer 2 and the prefabricated track plate 4 of the adjusting device through the limiting boss 11. Further, after the limit boss 11 is poured, the elastic cushion 7 is stuck on all side walls of the limit boss 11.
S4, installing an adjusting device on the base plate 1, and filling fluid into the fluid adjusting layer 2 through a valve 6 on the fluid adjusting layer 2 according to construction lofting positioning of the prefabricated track plate 4 until the height of the fluid adjusting layer 2 reaches a set height range;
in the step S4, the correspondence between the height and the rigidity of the fluid adjustment layer 2 and the elastic component 3 may be determined through calculation and experiments, so that the rigidity of the adjustment device is always maintained within the set range when the height of the fluid adjustment layer 2 is adjusted. And after the fluid adjusting layer 2 is sleeved outside the limiting boss 11 and is arranged on the base plate 1, the height range of the fluid adjusting layer 2 is determined according to the construction lofting positioning of the prefabricated track plate 4, then fluid is filled into the fluid adjusting layer 2 through the valve 6 on the fluid adjusting layer 2 until the height of the fluid adjusting layer 2 reaches the set height range, a certain height error is reserved in the set height range, the height of the fluid adjusting layer 2 is convenient to adjust, the height of the prefabricated track plate 4 is adjusted through the fluid adjusting layer 2, the position of the steel rail 5 is roughly adjusted, the steel rail 5 is finely adjusted through a fastener system, and the adjustment efficiency and the construction difficulty of the ballastless track are improved.
S5, installing a prefabricated track plate 4 above the adjusting device;
in the step S5, the prefabricated track plate 4 is sleeved outside the limiting boss 11 and placed on the fluid adjusting layer 2 of the adjusting device, and then the prefabricated track plate 4 is bonded on the fluid adjusting layer 2, so as to prevent the prefabricated track plate 4 from being separated from the fluid adjusting layer 2.
S6, installing a fastener system and a steel rail 5 on the prefabricated track slab 4.
In the step S6, the fastener system and the rail 5 are installed, so that the rail 5 is fixed on the prefabricated track slab 4, then the geometric shape and position of the rail 5 are finely adjusted by the fastener system, and then the operation can be started.
Compared with the prior art, the invention has the beneficial effects that:
(1) The structure is simple, the fluid adjusting layer 2 is arranged between the base plate 1 and the prefabricated track plate 4, the height of the fluid adjusting layer 2 is adjusted according to the amount of filled fluid, so that the vertical height of the prefabricated track plate 4 is adjusted, the ballastless track can adapt to the settlement and the arch deformation of an off-line foundation, the adjustment is convenient, and the line operation is not influenced;
(2) The elastic component 3 is arranged in the fluid adjusting layer 2, and the elastic component 3 can enable the rigidity of the adjusting device to be kept in a set range, so that on one hand, insufficient rigidity of the adjusting device can be prevented, the fluid adjusting layer 2 is prevented from tilting, and on the other hand, when the fluid adjusting layer 2 fails, the prefabricated track plate 4 is prevented from suddenly falling to cause accidents;
(3) The adjusting device and the prefabricated track plate 4 are prefabricated in factories and are constructed in an assembly mode on site, so that the construction difficulty can be effectively reduced, the construction efficiency is improved, the labor intensity of personnel is reduced, conditions are provided for mechanized construction, and the device is easier to maintain in the later period.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention will still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The ballastless track is characterized by comprising a base plate, an adjusting device, a prefabricated track plate and a steel rail, wherein the base plate, the adjusting device, the prefabricated track plate and the steel rail are sequentially arranged from bottom to top, the adjusting device comprises a fluid adjusting layer and an elastic component, the fluid adjusting layer is arranged between the base plate and the prefabricated track plate and is provided with a valve, fluid is filled into or extracted from the fluid adjusting layer through the valve to adjust the height and rigidity of the fluid adjusting layer, the elastic component is arranged in the fluid adjusting layer and is connected with the top end and the bottom end inside the fluid adjusting layer, the elastic component is configured to fill fluid into the fluid adjusting layer so that when the height and rigidity of the fluid adjusting layer are increased, the rigidity of the elastic component is reduced, the elastic component is configured to extract fluid into the fluid adjusting layer so that when the height and rigidity of the fluid adjusting layer are reduced, the rigidity of the adjusting device is increased, so that the rigidity of the adjusting device is maintained within a set range, and the steel rail is arranged on the prefabricated track plate through a fastener system.
2. The ballastless track of claim 1, wherein the fluid adjustment layer is made of rubber material, and the side wall of the fluid adjustment layer is provided with folds, and the folds are arranged along the circumferential direction of the fluid adjustment layer.
3. The ballastless track adapting to basic deformation according to claim 1, wherein the elastic component comprises a plurality of nonlinear springs, the nonlinear springs are divided into a plurality of groups, the nonlinear springs of the plurality of groups are arranged at intervals along the width direction of the fluid adjusting layer, the nonlinear springs of the same group are arranged at intervals along the length direction of the fluid adjusting layer, and two ends of the nonlinear springs are respectively connected with the top end and the bottom end inside the fluid adjusting layer.
4. The ballastless track of claim 1, wherein the adjustment device further comprises a vibration reduction assembly, the vibration reduction assembly comprises a plurality of spring dampers and a mass block arranged at one end of the spring dampers, the plurality of spring dampers are divided into a plurality of groups, the plurality of groups of spring dampers are arranged at intervals along the width direction of the fluid adjustment layer, the spring dampers of the same group are arranged at intervals along the length direction of the fluid adjustment layer, and one end of the spring damper far away from the mass block is arranged at the bottom end inside the fluid adjustment layer.
5. The ballastless track adapting to foundation deformation of claim 1, wherein the base plate is provided with a limiting boss, the fluid adjusting layer is provided with a first through hole for the limiting boss to pass through, and the prefabricated track plate is provided with a second through hole for the limiting boss to pass through.
6. The ballastless track of claim 5, wherein the outer side wall of the limit boss is provided with an elastic cushion layer.
7. The ballastless track of claim 5, wherein the edge of the limit boss is rounded.
8. The ballastless track of claim 1, wherein the fluid adjustment layer comprises two independent parts, a left adjustment layer and a right adjustment layer, the left adjustment layer and the right adjustment layer are respectively provided with a valve and an elastic component, and the base plate is provided with a limit stop block at a position of one side of the left adjustment layer away from the right adjustment layer and a position of one side of the right adjustment layer away from the left adjustment layer.
9. A ballastless track adapted for basic deformation according to claim 1, wherein the fluid is compressed air or liquid.
10. A construction method of a ballastless track adapted to foundation deformation for installing the ballastless track adapted to foundation deformation as recited in any one of claims 1 to 9, comprising the steps of:
s1, prefabricating an adjusting device, a prefabricated track plate, a steel rail and a fastener system in a factory, and conveying the adjusting device, the prefabricated track plate, the steel rail and the fastener system to a construction site;
s2, constructing a track engineering measurement plane and a height control network, and performing construction lofting on a base plate and the prefabricated track plate;
s3, pouring the base plate on site according to construction lofting positioning of the base plate;
s4, installing the adjusting device on the base plate, and filling fluid into the fluid adjusting layer through a valve on the fluid adjusting layer according to construction lofting positioning of the prefabricated track plate until the height of the fluid adjusting layer reaches a set height range;
s5, installing a prefabricated track plate above the adjusting device;
s6, installing a fastener system and a steel rail on the prefabricated track plate.
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| CN202310443176.3A CN116180506B (en) | 2023-04-24 | 2023-04-24 | Ballastless track adapting to foundation deformation and construction method thereof |
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| CN202310443176.3A CN116180506B (en) | 2023-04-24 | 2023-04-24 | Ballastless track adapting to foundation deformation and construction method thereof |
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| JP2000309901A (en) * | 1999-02-26 | 2000-11-07 | Ohbayashi Corp | Vibration-proofing device of track |
| JP2017145647A (en) * | 2016-02-18 | 2017-08-24 | 株式会社アレン | Adjustable pad for adjusting rail height and rail height adjustment structure |
| CN214939344U (en) * | 2021-04-20 | 2021-11-30 | 衡水众鑫工程橡塑有限公司 | Hydraulic leveling device and distributed hydraulic leveling system of bridge support |
| CN114606803A (en) * | 2021-12-17 | 2022-06-10 | 中铁二院工程集团有限责任公司 | Height-adjustable composite high-speed railway roadbed structure and design method thereof |
| CN218373028U (en) * | 2022-09-27 | 2023-01-24 | 中铁第四勘察设计院集团有限公司 | Plate type adjustable track structure |
| CN218478970U (en) * | 2022-09-27 | 2023-02-14 | 中铁第四勘察设计院集团有限公司 | Large-adjustment-quantity plate type ballastless track structure |
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2023
- 2023-04-24 CN CN202310443176.3A patent/CN116180506B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000309901A (en) * | 1999-02-26 | 2000-11-07 | Ohbayashi Corp | Vibration-proofing device of track |
| JP2017145647A (en) * | 2016-02-18 | 2017-08-24 | 株式会社アレン | Adjustable pad for adjusting rail height and rail height adjustment structure |
| CN214939344U (en) * | 2021-04-20 | 2021-11-30 | 衡水众鑫工程橡塑有限公司 | Hydraulic leveling device and distributed hydraulic leveling system of bridge support |
| CN114606803A (en) * | 2021-12-17 | 2022-06-10 | 中铁二院工程集团有限责任公司 | Height-adjustable composite high-speed railway roadbed structure and design method thereof |
| CN218373028U (en) * | 2022-09-27 | 2023-01-24 | 中铁第四勘察设计院集团有限公司 | Plate type adjustable track structure |
| CN218478970U (en) * | 2022-09-27 | 2023-02-14 | 中铁第四勘察设计院集团有限公司 | Large-adjustment-quantity plate type ballastless track structure |
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| CN116180506B (en) | 2023-07-18 |
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