CN212375637U - Novel assembled ballastless track structure - Google Patents

Abstract

The utility model discloses a novel assembled ballastless track structure, which comprises a concrete base, a track plate and a steel rail; convex blocking platforms which are distributed in parallel at equal intervals are prefabricated on the upper surface of the concrete base; the track plates are clamped between the adjacent convex blocking platforms, and the outer walls of the longitudinal two ends of each track plate are respectively provided with a clamping groove; adjacent track plates are independently arranged and keep a gap distance, independent detachable adjusting layers are respectively arranged between the track plates and the concrete base, and abdicating grooves are respectively arranged at the longitudinal two ends of each adjusting layer corresponding to the clamping grooves and are clamped with the convex blocking platforms; elastic components are arranged between the inner sides of the clamping grooves and the abdicating grooves and the convex baffle table; the ballastless track structure has the advantages that the curve superelevation can be realized, the construction is simple and convenient, the height of the track slab is easy to adjust, the adjusting layer can be replaced and maintained, and the later-stage maintenance cost is low.

Description

Novel assembled ballastless track structure

Technical Field

The utility model relates to ballastless track technical field, concretely relates to novel assembled ballastless track structure.

Background

At present, ballastless tracks in China are mainly divided into double-block type ballastless tracks and plate type ballastless tracks. The double-block ballastless track has two types of CRTS I and CRTS II. The CRTS I dual-block type radar 2000 rail from Germany has the appearance characteristic that a rail supporting platform with a protrusion is arranged on the surface, and a section of the rail supporting platform is further grown on the inner side of a line. The CRTS II double-block type is sourced from German Xupu forest track, the appearance is characterized in that the track bearing platform is square instead of circular, and the ballastless track is only paved specially for Zheng West guests. The CRTS I double-block concrete pouring method is characterized in that a base is paved in advance, sleepers are prefabricated, then a plurality of sleepers are connected together through short steel rails on site, the sleepers and a steel bar net are erected above the base through a support, templates on two sides are installed, and concrete is poured after the positions of the rails are adjusted. Curing for a period of time and then forming. The advantages are good smoothness, and the disadvantages are slow construction and easy cracking between the newly cast concrete and the sleeper.

The slab ballastless track comprises three types of CRTS I, CRTS II and CRTS III. The CRTS I plate is from Japan, belongs to a unit plate, and has the appearance characteristics that the surface is flat and has no rail bearing platform, and a cylindrical boss is arranged between the plates. Softer asphalt mortar is laid between the track plate and the base, transverse and longitudinal stress is borne by the bosses, and the plate is not connected with the plate except for the steel rail. The upper half position of the split fastener is adjusted to fit the circular arc when the curve is laid.

The CRTS II plate type is derived from a German Bo grid plate type rail, belongs to a longitudinal connecting plate, and is characterized in that a track (pre-crack) is transversely marked between every two rail bearing platforms on the plate surface. The track is extremely complex, harder asphalt mortar is paved at the lower part, and 6 bolts extend out of the plate end to be used for locking the plates with each other and bearing transverse and longitudinal forces together. When the curve is laid, the rail bearing table is ground by a grinding machine to fit the curve shape (the construction difficulty is high and slow). When laying on the bridge, because the board is even as an organic whole, need keep apart with the bridge and avoid expend with heat and contract with cold's influence, lay several layers of combined material board below the base and constitute the structure that allows longitudinal sliding, both sides block with the cement piece, bury the huge shape of falling T end thorn in the both ends underground and withstand the track both ends.

The self-created CRTS III plate type track can be produced by developing the advantages and avoiding the disadvantages of the high-speed ballastless tracks. By adopting the plate type structure, the on-site concrete is less in use, the construction is simple, the high-fluidity concrete paved below replaces the asphalt mortar, and the line is more stable. Make 2 square bosss under the board, the base makes 2 square recesses and mutually supports and transmits vertical and horizontal power. However, the self-compacting concrete of the filling layer is intensively mixed and transported to the site for pouring by a tank car, so that the waste is large, the cost is high, and meanwhile, the maintainability is poor when organic elastic materials of the lower limiting groove of the plate are degraded and the track structure is damaged destructively.

Disclosure of Invention

The utility model aims at the problem that prior art exists, provide a novel assembled ballastless track structure to optimize track structure, be convenient for adjust track height and later stage maintenance, reduce cost of maintenance.

In order to achieve the above object, the utility model adopts the following technical scheme:

a novel assembled ballastless track structure comprises a concrete base, wherein a plurality of track plates are arranged on the concrete base, and steel rails are arranged on the track plates through a fastener system; convex blocking platforms which are distributed in parallel at equal intervals are prefabricated on the upper surface of the concrete base, and the convex blocking platforms are arranged along the length direction of the concrete base; the track plates are clamped between the adjacent convex blocking platforms to form a unit, the outer walls of the longitudinal two ends of each unit of the track plate are respectively provided with a clamping groove, and the clamping grooves and the convex blocking platforms are arranged in a one-to-one correspondence manner; the adjacent track plates are independently arranged and keep a gap distance, an independent detachable adjusting layer is arranged between the track plate of each unit and the concrete base, and abdicating grooves are respectively arranged at the longitudinal two ends of the adjusting layer of each unit corresponding to the clamping grooves and are clamped with the convex blocking platforms; the inboard of draw-in groove with the inboard in groove of stepping down with protruding type keeps off and still is provided with elastic component between the platform.

This novel assembled ballastless track structure passes through the setting on adjustment layer can realize the curve superelevation, and the construction is simple and convenient, easily adjust the track board height, can change and maintain adjustment layer, later stage cost of maintenance is low.

The convex blocking platform can limit the track slab on one hand, and comprises transverse limit and longitudinal limit to ensure the installation position of the track slab; on the other hand, adjacent track plates can be in no direct contact with each other to form an independent unit, so that the unit-by-unit regulation and control are facilitated.

The track plates are not in direct contact, longitudinal connecting steel bars are not required to be arranged, and the structure is simpler; the elastic assembly is matched, so that the clamping assembly relation between the track plate and the convex blocking platform can be ensured, the elastic buffering effect can be formed, and concrete cracks caused by expansion with heat and contraction with cold can be reduced; and every unit the track board is in vertical homoenergetic freedom adjustment, when taking place supply or when sinking on adjustment layer damage, the track, can independently adjust the height of corresponding unit track board, is convenient for the change on adjustment layer.

Similarly, the adjusting layers in each unit are also independently arranged and are not longitudinally connected with each other, so that the adjusting layers can be independently and conveniently replaced, and the problems of repairing damage of the adjusting layers, adjusting the height of the track structure and the like can be quickly and conveniently solved.

That is to say, when the ballastless track structure is laid for the first time, the concrete base, the adjusting layer, the track slab and the steel rail can be laid from bottom to top; and in the later maintenance and repair process, after the track slab is slightly lifted by the wedge block or the jacking device, the adjusting layer is replaced and repaired, and then the track slab is adjusted to a reasonable height position by the adjusting layer.

It should be noted that when the ballastless track structure is laid on a bridge section, pouring of the concrete base can be omitted, the existing structure on the bridge is directly utilized to arrange the convex blocking platform, construction can be simplified, and bridge load can be reduced; when the ballastless track structure is laid on a tunnel section, the pouring thickness of the base plate in the tunnel can be reduced, the construction is simplified, and the construction cost is reduced.

Further, the adjusting layer is a grouting bag laid between the concrete base and the track slab, and one of self-compacting concrete, self-leveling mortar, emulsified asphalt-cement composite mortar or polymer emulsion-cement composite mortar is poured into the grouting bag; the vertical and horizontal size of the grouting bag is not smaller than that of the track slab, and the sum of the height of the grouting bag after grouting and the height of the track slab is not higher than that of the convex blocking platform.

Through the setting of slip casting bag and slip casting operation, need not the formwork when adjusting the layer adjustment to realize the curve superelevation, the shape when slip casting bag fills the type can follow the curvature change of track board (or the curve radian that the rail was laid needs) and automatic change, automatic fitting curve. Aiming at the adjusting layers with different height requirements, the grouting bags with different sizes are laid to realize one-time casting molding; if the grouting bag is damaged, the whole grouting bag can be taken out, and a new grouting bag is laid for grouting again; when the track is arched and sunk, the grouting bags can be taken out, the grouting bags with corresponding sizes are replaced to adjust the height of the track structure, and the grouting bags can be directly and integrally replaced and refilled when required to be maintained, so that the maintenance convenience is good.

Compared with the existing grouting bags, the grouting bags in the ballastless track structure are more reasonable in structure, the upper surface and the lower surface of each grouting bag can be tightly attached to the lower surface of the track slab and the upper surface of the concrete base, the track slab is better in overall supporting effect and higher in stability; the track plate unit has good adjustment flexibility, and can be independently replaced and adjusted along with the track plate unit; the slip casting bag after the type is filled in the slip casting also can form groove structure (promptly the groove of stepping down) at both ends to with protruding type keeps off the platform cooperation and forms spacingly.

Furthermore, the grouting bag is a corrosion-resistant high-strength woven bag, a grouting bag opening is reserved on at least one side edge of the grouting bag, the grouting bag opening is long and extends outwards, and a binding piece is arranged on the grouting bag opening.

The woven bag is woven by one or more of polyester fiber, spandex, polypropylene fiber, chinlon, terylene, nylon and plant fiber in a woven or non-woven or blended manner; the slip casting sack outwardly extends and is convenient for be connected with grouting equipment and carry out the operation of being in milk, the slip casting sack with still be equipped with between the concrete base and support guider, the thick liquids of being convenient for get into the slip casting bag.

Furthermore, the adjusting layers in each unit are of an integrated structure, and the inner and outer contour shapes of the adjusting layers are consistent with the inner and outer contour shapes of the track slab.

Furthermore, the adjusting layer in each unit is of a split structure and comprises half-half arranged sub adjusting layers or more than three spliced sub adjusting layers; and the sub adjusting layers arranged in half keep a distance.

Furthermore, the convex blocking platforms are respectively arranged at the transverse middle part of the concrete base, and the clamping grooves are also respectively arranged at the transverse middle part of the track slab so as to ensure that the longitudinal central axes are on the same line; the convex blocking platform is a concrete structure blocking platform.

Furthermore, the elastic assembly comprises an upper elastic buffer layer and a lower caulking material layer, the upper elastic buffer layer is arranged between the convex blocking platform and the clamping groove, and the lower caulking material layer is arranged between the convex blocking platform and the abdicating groove of the adjusting layer; the upper elastic buffer layer is one or more of a laid organic silicon elastic piece, an epoxy resin elastic piece or a laid polyurethane elastic piece, and the lower caulking material layer is a laid foam board or a prefabricated elastic cushion board.

The stress and the deformation resistance of the track slab and the adjusting layer are different, and different elastic components are arranged to play a role in mutual compensation, so that the generation of deformation and cracks is reduced.

Furthermore, the track plate is of a frame structure, a round-corner rectangular long hole which penetrates through the track plate up and down is formed in the middle of the track plate, and a corresponding round-corner rectangular long hole is formed in the middle of the adjusting layer; the upper surface of the concrete base is provided with a longitudinally through drainage ditch and/or a transversely through drainage ditch; the fillet rectangle slot hole with the escape canal intercommunication.

The setting of fillet rectangle slot hole can be optimized the structure of track board reduces the dead weight, reduces material cost, also can form rainwater flow space, and through the escape canal outwards discharges ponding on the track, avoids the rainwater deposit to destroy concrete structure at the middle frame part of track board.

Furthermore, a plurality of pillow blocks are arranged on the two longitudinal sides of the upper surface of the track slab at equal intervals, the steel rail is laid on the pillow blocks, and the fastener system is fixed on the pillow blocks in a threaded manner and fastens the steel rail.

Further, an installation method of the novel assembly type ballastless track structure comprises the following steps:

(1) pouring the concrete base at a roadbed section and arranging the convex blocking platform; or the convex blocking platforms are directly arranged at the bridge and tunnel sections;

(2) placing a grouting bag below the track slab (or above the concrete base), hoisting the track slab between every two adjacent convex blocking platforms, finely adjusting the track slab according to design requirements, and paving an elastic component between each convex blocking platform and the track slab;

(3) filling one of self-compacting concrete, self-leveling mortar, emulsified asphalt-cement composite mortar or polymer emulsion-cement composite mortar into the grouting bag through a grouting bag opening; the grouting bag is full and supports the track plate, grouting is stopped after the height of the grouting bag reaches a preset height, a grouting bag opening is bound, and the grouting bag is solidified, molded and maintained;

(4) and laying steel rails on the track plate with the adjusted height and fastening the steel rails through a fastener system to finish the installation of the ballastless track structure.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the novel assembled ballastless track structure can realize curve superelevation, is simple and convenient to construct, is easy to adjust the height of the track slab, can replace and maintain the adjusting layer and is low in later-stage maintenance cost through the arrangement of the adjusting layer; 2. the convex blocking platform can limit the track slab on one hand, and comprises transverse limit and longitudinal limit to ensure the installation position of the track slab; on the other hand, adjacent track slabs can be in no direct contact with each other to form an independent unit, longitudinal connecting steel bars are not required to be arranged, the structure is simpler, and an elastic buffering effect can be formed by matching with the arrangement of the elastic assembly, so that concrete cracks caused by expansion with heat and contraction with cold are reduced; 3. the grouting bag is adopted as an adjusting layer, self-compacting concrete or self-leveling mortar and the like can be poured through the grouting bag, a template does not need to be supported, the construction is simple and convenient, the curve is ultrahigh, and the one-time casting molding is realized by paving the grouting bags with different sizes aiming at the adjusting layers with different height requirements; 4. when the ballastless track structure is laid on a bridge section, the pouring of the concrete base can be omitted, the convex blocking platform is directly arranged by utilizing the existing structure on the bridge, the construction can be simplified, and the load of the bridge can be reduced; 5. when the ballastless track structure is laid on a tunnel section, the pouring thickness of a base plate in the tunnel can be reduced, the construction is simplified, and the construction cost is reduced; 6. this structure sets up the track board can reduce the dead weight, reduces material cost, also can form rainwater flow space, and pass through the drainage ditch outwards discharges the ponding on the track, avoids the rainwater deposit to destroy concrete structure at the middle frame part of track board.

Drawings

Fig. 1 is an explosion schematic diagram of a novel assembled ballastless track structure of the present invention;

fig. 2 is an assembly structure schematic diagram of the novel assembly type ballastless track structure of the present invention;

fig. 3 is a schematic cross-sectional view of a convex blocking platform of the novel assembled ballastless track structure of the present invention;

fig. 4 is a schematic structural diagram of an adjusting layer of the novel assembled ballastless track structure of the present invention;

fig. 5 is a schematic structural diagram of another adjustment layer of the novel assembled ballastless track structure of the present invention;

fig. 6 is an explosion schematic view of another novel assembly type ballastless track structure of the present invention;

fig. 7 is a schematic structural view of another drainage ditch of the novel assembly type ballastless track structure of the present invention;

in the figure: 1. a concrete base; 2. a track plate; 3. a steel rail; 4. a fastener system; 5. a convex block platform; 6. a card slot; 7. an adjustment layer; 701. dividing the adjusting layer; 8. a yielding groove; 9. an elastic component; 901. an upper elastic buffer layer; 902. a lower layer caulking material layer; 10. a round corner rectangular long hole; 11. a drainage ditch; 12. a pillow block; 13. and (5) grouting bag opening.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The first embodiment is as follows:

as shown in fig. 1 to 4, a novel assembly type ballastless track structure comprises a concrete base 1, wherein a plurality of track plates 2 are arranged on the concrete base 1, and steel rails 3 are arranged on the track plates 2 through fastener systems 4; convex blocking platforms 5 which are distributed in parallel at equal intervals are prefabricated on the upper surface of the concrete base 1, and the convex blocking platforms 5 are arranged along the length direction of the concrete base 1; the track plates 2 are clamped between the adjacent convex blocking platforms 5 to form a unit, the outer walls of the longitudinal two ends of each unit of the track plate 2 are respectively provided with a clamping groove 6, and the clamping grooves 6 are arranged in one-to-one correspondence with the convex blocking platforms 5; the adjacent track slabs 2 are independently arranged and keep a gap distance, an independent detachable adjusting layer 7 is arranged between each track slab 2 of each unit and the concrete base 1, abdicating grooves 8 are respectively arranged at the longitudinal two ends of each adjusting layer 7 of each unit corresponding to the clamping grooves 6, and the abdicating grooves 8 are clamped with the convex blocking platforms 5; the inboard of draw-in groove 6 with the inboard of groove 8 of stepping down with still be provided with elastic component 9 between the protruding type fender platform 5.

This novel assembled ballastless track structure passes through adjustment layer 7's setting can realize the curve superelevation, and the construction is simple and convenient, easily adjust the track board height, can change and maintain adjustment layer, later stage cost of maintenance is low.

The convex blocking platform 5 can limit the track slab 2 on one hand, and comprises transverse limit and longitudinal limit to ensure the installation position of the track slab 2; on the other hand, adjacent track plates 2 are not in direct contact with each other to form independent units, so that the unit-by-unit regulation and control are facilitated.

The track slab 2 is not in direct contact with the track slab, and does not need to be provided with longitudinal connecting steel bars, so that the structure is simpler; by matching with the arrangement of the elastic assembly 9, the clamping assembly relationship between the track slab 2 and the convex baffle table 5 can be ensured, the elastic buffering effect can be formed, and concrete cracks caused by thermal expansion and cold contraction are reduced; and every unit the track board 2 is in vertical homoenergetic freedom adjustment, when taking place supply or when sinking on adjustment layer damage, the track, can independently adjust the height of corresponding unit track board, is convenient for the change on adjustment layer.

Similarly, the adjusting layers 7 in each unit are also independently arranged and are not longitudinally connected with each other, so that the adjusting layers 7 can be independently and conveniently replaced, and the problems of repairing damage of the adjusting layers, adjusting the height of the track structure and the like can be quickly and conveniently solved.

That is to say, when the ballastless track structure is laid for the first time, the concrete base 1, the adjusting layer 7, the track slab 2 and the steel rail 3 can be laid from bottom to top; in the later maintenance and repair process, the track slab 2 can be slightly lifted by a wedge block or a jacking device, then the adjusting layer 7 is replaced and repaired, and then the track slab is adjusted to a reasonable height position by the adjusting layer 7.

Further, the adjusting layer 7 is a grouting bag laid between the concrete base 1 and the track slab 2, and one of self-compacting concrete, self-leveling mortar, emulsified asphalt-cement composite mortar or polymer emulsion-cement composite mortar is poured into the grouting bag; the longitudinal and transverse dimensions of the grouting bag are slightly larger than those of the track slab 2, and the sum of the height of the grouting bag after grouting and the height of the track slab 2 is basically the same as the height of the convex baffle table 5.

By the arrangement of the grouting bag and grouting operation, no formwork is required to be supported when the adjusting layer 7 is adjusted, and curve superelevation is realized. Aiming at the adjusting layers 7 with different height requirements, the one-time casting molding is realized by laying the grouting bags with different sizes; if the grouting bag is damaged, the whole grouting bag can be taken out, and a new grouting bag is laid for grouting again; when the track is arched and sunk, the grouting bags can be taken out, the grouting bags with corresponding sizes are replaced to adjust the height of the track structure, and the grouting bags can be directly and integrally replaced and refilled when required to be maintained, so that the maintenance convenience is good.

Compared with the existing grouting bags, the grouting bags in the ballastless track structure are more reasonable in structure, the upper surface and the lower surface can be tightly attached to the lower surface of the track slab 2 and the upper surface of the concrete base 1, the overall supporting effect on the track slab 2 is better, and the stability is higher; the track plate unit has good adjustment flexibility, and can be independently replaced and adjusted along with the track plate unit; the slip casting bag after the slip casting fills the type also can form groove structure (promptly the groove of stepping down 8) at both ends to with protruding type keeps off the cooperation of platform 5 and forms spacingly.

Furthermore, the grouting bag is a corrosion-resistant high-strength woven bag, a grouting bag opening 13 is reserved on the transverse side edge of the grouting bag, the grouting bag opening 13 is long and extends outwards, and a binding piece, such as a binding rope with a closing function, is arranged on the grouting bag opening 13.

The woven bag is formed by blending and weaving polyester fibers and spandex; slip casting sack 13 outwards extends and is convenient for be connected with grouting equipment and carry out the grout operation, slip casting sack 13 with still be equipped with the support guider between the concrete base 1, the thick liquids of being convenient for get into the slip casting bag, support the bearing diagonal of guide way in the area of guider for the steel construction, can withdraw after finishing using, reuse next time.

Further, the adjusting layer 7 in each unit is of an integral structure, and the inner and outer contour shapes of the adjusting layer 7 are consistent with the inner and outer contour shapes of the track slab 2, so that good overall supporting capability after mold filling is ensured.

Further, the convex blocking platforms 5 are respectively arranged at the transverse middle parts of the concrete bases 1, and the clamping grooves 6 are also respectively arranged at the transverse middle parts of the track plates 2, so as to ensure that the longitudinal central axes are on the same line; the convex block platform 5 is a concrete structure block platform.

Further, the elastic component 9 includes an upper elastic buffer layer 901 and a lower caulking material layer 902 (see fig. 3), the upper elastic buffer layer 901 is disposed between the convex baffle 5 and the slot 6 of the track plate 2, and the lower caulking material layer 902 is disposed between the convex baffle 5 and the relief slot 8 of the adjusting layer 7; the upper elastic buffer layer 901 is made of paved resin, and the lower caulking material layer 902 is a paved foam board.

The stress and the deformation resistance of the track slab 2 and the adjusting layer 7 are different, different elastic assemblies 9 are arranged to play a role in mutual compensation, deformation and cracks are reduced, and the convex blocking platform 5 can be connected.

Further, the track plate 2 is of a frame structure, a round-corner rectangular long hole 10 which penetrates through the track plate 2 from top to bottom is formed in the middle of the track plate 2, and a corresponding round-corner rectangular long hole 10 is formed in the middle of the adjusting layer 7; the upper surface of the concrete base 1 is provided with a drainage ditch 11 which is longitudinally communicated; the round-corner rectangular long hole 10 is communicated with the drainage ditch 11.

The setting of fillet rectangle slot hole 10 can optimize the structure of track board 2 reduces the dead weight, reduces material cost, also can form rainwater flow space, and through escape canal 11 outwards discharges ponding on the track, avoids the rainwater deposit to destroy concrete structure at the middle frame part of track board 2.

Furthermore, a plurality of sleepers 12 are arranged on the two longitudinal sides of the upper surface of the track slab 2 at equal intervals, the steel rail 3 is laid on the sleepers 12, and the fastener system 4 is fixed on the sleepers 12 in a threaded manner and fastens the steel rail 3.

Example two:

the difference between this embodiment and the first embodiment is that another structure of the adjustment layer is provided.

As shown in fig. 5 and 6, the adjusting layer 7 in each unit is a split structure, and includes a split adjusting layer 701 disposed in half; the sub adjustment layers 701 arranged in half maintain a space therebetween.

The adjustment layers thus provided can be poured separately, and the half sub adjustment layers 701 do not contact each other, forming a lateral space that can be used as a lateral gutter 11; the construction process of arranging the drainage ditch on the concrete base 1 is avoided, the integrity of the concrete base 1 can be kept while the height adjustment and the support of the track slab 2 are not influenced by the adjusting layer, and the drainage is not influenced.

Example three:

the difference between the present embodiment and the first embodiment is that another arrangement of the convex blocking platform is provided.

As shown in fig. 7, the convex block platform 5 is integrally cast with the concrete base 1; then, grooves are formed around the convex blocking platforms 5 and are converged with a longitudinal drainage ditch to form a complete drainage ditch 11.

Due to the arrangement, the convex blocking platform 5 is prevented from being formed by pouring independently, a drainage ditch is not required to be formed below the convex blocking platform 5, and the construction is more convenient.

Example four:

the embodiment provides an installation method of a novel assembly type ballastless track structure in the first embodiment, which includes the following steps:

(1) pouring the concrete base at a roadbed section and arranging the convex blocking platform; or the convex blocking platform is directly arranged at the bridge section;

(2) placing a grouting bag below the track slab, hoisting the track slab between every two adjacent convex blocking platforms, finely adjusting the track slab according to design requirements, and laying an elastic component between each convex blocking platform and the track slab;

(3) filling self-compacting concrete into the grouting bag through a grouting bag opening; the grouting bag is full and supports the track plate, grouting is stopped after the height of the grouting bag reaches a preset height, a grouting bag opening is bound, and the grouting bag is solidified, molded and maintained;

(4) and laying steel rails on the track plate with the adjusted height and fastening the steel rails through a fastener system to finish the installation of the ballastless track structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A novel assembled ballastless track structure comprises a concrete base, wherein a plurality of track plates are arranged on the concrete base, and steel rails are arranged on the track plates through a fastener system; the concrete base is characterized in that convex blocking platforms which are distributed in parallel at equal intervals are prefabricated on the upper surface of the concrete base, and the convex blocking platforms are arranged along the length direction of the concrete base; the track plates are clamped between the adjacent convex blocking platforms to form a unit, the outer walls of the longitudinal two ends of each unit of the track plate are respectively provided with a clamping groove, and the clamping grooves and the convex blocking platforms are arranged in a one-to-one correspondence manner; the adjacent track plates are independently arranged and keep a gap distance, an independent detachable adjusting layer is arranged between the track plate of each unit and the concrete base, and abdicating grooves are respectively arranged at the longitudinal two ends of the adjusting layer of each unit corresponding to the clamping grooves and are clamped with the convex blocking platforms; the inboard of draw-in groove with the inboard in groove of stepping down with protruding type keeps off and still is provided with elastic component between the platform.

2. The novel assembled ballastless track structure of claim 1, wherein the adjusting layer is a grouting bag laid between the concrete base and the track slab, and the grouting bag is filled with one of self-compacting concrete, self-leveling mortar, emulsified asphalt-cement composite mortar or polymer emulsion-cement composite mortar; the vertical and horizontal size of the grouting bag is not smaller than that of the track slab, and the sum of the height of the grouting bag after grouting and the height of the track slab is not higher than that of the convex blocking platform.

3. The novel assembled ballastless track structure of claim 2, wherein the grouting bag is a corrosion-resistant high-strength woven bag, a grouting bag opening is reserved on at least one side edge of the grouting bag, the grouting bag opening is elongated and extends outwards, and a binding member is arranged on the grouting bag opening.

4. The novel assembled ballastless track structure of claim 1 or 2, wherein the adjusting layer in each unit is an integral structure, and the inner and outer contour shapes of the adjusting layer are consistent with those of the track slab.

5. The novel assembled ballastless track structure of claim 1 or 2, wherein the adjusting layer in each unit is a split structure, and comprises split adjusting layers arranged in half or split adjusting layers spliced by more than three segments; and the sub adjusting layers arranged in half keep a distance.

6. The novel assembled ballastless track structure of claim 1, wherein the convex blocking platforms are respectively arranged at the transverse middle parts of the concrete bases, and the clamping grooves are also respectively arranged at the transverse middle parts of the track slabs; the convex blocking platform is a concrete structure blocking platform.

7. The novel assembled ballastless track structure of claim 1, wherein the elastic component comprises an upper elastic buffer layer and a lower caulking material layer, the upper elastic buffer layer is disposed between the convex baffle platform and the clamping groove, and the lower caulking material layer is disposed between the convex baffle platform and the yielding groove of the adjusting layer.

8. The novel assembled ballastless track structure of claim 7, wherein the upper elastic buffer layer is one or more of a laid silicone elastomer, an epoxy resin elastomer or a polyurethane elastomer, and the lower caulking material layer is a laid foam board or a prefabricated elastic cushion board.

9. The novel assembled ballastless track structure of claim 1, wherein the track slab is a frame structure, a rounded rectangular long hole penetrating up and down is formed in the middle of the track slab, and a corresponding rounded rectangular long hole is formed in the middle of the adjusting layer; the upper surface of the concrete base is provided with a longitudinally through drainage ditch and/or a transversely through drainage ditch; the fillet rectangle slot hole with the escape canal intercommunication.

10. The novel assembled ballastless track structure of claim 1, wherein a plurality of sleepers are arranged on the longitudinal sides of the upper surface of the track slab at equal intervals, the steel rail is laid on the sleepers, and the fastener system is fixed on the sleepers in a threaded manner and fastens the steel rail.

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