CN112030630A

CN112030630A - Grouting bag for ballastless track adjusting layer and using method thereof

Info

Publication number: CN112030630A
Application number: CN202011032449.8A
Authority: CN
Inventors: 许亮; 马红超; 张双艳; 曹钢
Original assignee: Wuhan Kunneng Track System Technology Co ltd; Wuhan Billion Technology Development Co ltd
Current assignee: Wuhan Kunneng Track System Technology Co ltd; Wuhan Billion Technology Development Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2020-12-04

Abstract

The invention discloses a grouting bag for a ballastless track adjusting layer and a using method thereof, wherein at least one side of the grouting bag is provided with a grouting bag opening, and a binding piece is arranged on the grouting bag opening; the grouting bag is arranged in an area between the concrete base and the track slab to adjust and support the track slab; the grouting bag is filled with a grouting material; the longitudinal and transverse dimensions of the grouting bag are not smaller than those of the track slab, and the shape of the inner and outer outlines of the grouting bag after being filled is consistent with that of the inner and outer outlines of the track slab; the longitudinal ends of the grouting bags are respectively limited by convex baffle tables arranged on the concrete base, and the longitudinal ends of the grouting bags are provided with abdicating grooves matched with the convex baffle tables; the grouting bag is simple in structure, easy to install and use, and capable of being used for installation of a newly-built ballastless track structure of a line and height adjustment of a track slab, construction is simplified, formwork erecting is not needed, and follow-up maintenance and replacement are facilitated.

Description

Grouting bag for ballastless track adjusting layer and using method thereof

Technical Field

The invention relates to the technical field of geotextile, in particular to a grouting bag for a ballastless track adjusting layer and a using method thereof.

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.

The method also comprises the step of lifting and repairing the ballastless track by using a grouting bag, for example, Chinese invention patent (publication number: CN104153260B) discloses a grouting bag for grouting and lifting the ballastless track in 2016 and a manufacturing and using method thereof, wherein the grouting bag is made of materials with high strength, thin thickness, good air permeability and small dry heat shrinkage rate, one end of the grouting bag is closed, the other end of the grouting bag is open, the open end of the grouting bag is used for inserting a grouting pipe, the opening part of the grouting bag is tightly wound around the grouting pipe, the rest part of the bag body is tightly folded and wound outside the grouting pipe, and cloth bags with corresponding shapes and sizes are numbered according to different lifting amounts; before grouting, inserting the grouting bags which are correspondingly numbered and are internally provided with the grouting pipes into the grouting holes which are correspondingly numbered under the ballastless track; during grouting, the grouting bag is completely unfolded to the designed shape and size under the grouting pressure, so that the upper ballastless track is accurately and controllably lifted; and then the grouting material in the grouting bag is quickly hardened, and the ballastless track is supported and positioned at a set position. Although the grouting bags are used for controllable lifting, a large number of grouting bags are needed to be used below the track slab in each unit, grouting materials still need to be poured among the grouting bags and between the base and the gravel layer, and the whole construction process is still complicated; and the bonding part needs to be chiseled off during later-stage restoration, which is not beneficial to restoration again.

Disclosure of Invention

The invention aims to provide a grouting bag for a ballastless track adjusting layer and a using method thereof, aiming at the problems in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that:

the grouting bag for the ballastless track adjusting layer is formed by weaving, blending or non-woven weaving of one or more weaving materials, at least one side of the grouting bag is provided with a grouting bag opening, and a binding piece is arranged on the grouting bag opening; the grouting bag is arranged in an area between the concrete base and the track slab to adjust and support the track slab; the grouting bag is filled with a grouting material; the longitudinal and transverse dimensions of the grouting bag are not smaller than those of the track slab, and the shape of the inner and outer outlines of the grouting bag after being filled is consistent with that of the inner and outer outlines of the track slab; the vertical both ends of slip casting bag are in through setting up protruding type on the concrete base keeps off the platform respectively and carries on spacingly, the vertical both ends of slip casting bag be equipped with protruding type keep off platform complex groove of stepping down.

The grouting bag for the ballastless track adjusting layer is simple in structure, easy to install and use, and capable of being used for installation of a ballastless track structure of a newly-built line and height adjustment of track slabs, simplifying construction, avoiding formwork erecting and facilitating subsequent maintenance and replacement.

This ballastless track slip casting bag for adjustment layer's setting can also realize the curve superelevation, easily adjusts the track board height, can change and maintain adjustment layer, later stage cost of maintenance is low.

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.

That is to say, when a ballastless track structure is laid for the first time, the concrete base, the grouting bags, 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 grouting bag is replaced and repaired, and then the track slab is adjusted to a reasonable height position by the grouting bag.

It should be noted that when a ballastless track structure is laid on a bridge road section, pouring of the concrete base can be omitted, the existing structure on the bridge is directly utilized to set the convex blocking platform, and the grouting bag is directly arranged between the bridge and the track slab, so that construction can be simplified, and bridge load can be reduced.

Furthermore, the convex blocking platforms are distributed in parallel at equal intervals, the track plates are clamped between the adjacent convex blocking platforms respectively to form units, the grouting bags are independently arranged in each unit, and gaps are kept between the grouting bags of the adjacent units.

The convex baffle table can limit the track plate and the grouting bag on one hand, and comprises transverse limit and longitudinal limit to ensure the installation positions of the track plate and the grouting bag; on the other hand can let adjacent no direct contact between the slip casting bag forms independent unit, makes in every unit the slip casting bag is independent setting, does not have longitudinal connection each other, can realize the independent convenient change of slip casting bag to can realize fast, conveniently that the slip casting bag is damaged to be restoreed, track structure altitude mixture control scheduling problem.

Furthermore, the grouting bags in each unit are of an integral structure, and the sum of the height of the grouting bags after grouting and the height of the track plate is not higher than the height of the convex blocking platform.

Furthermore, the grouting bags in each unit are of split structures and comprise split grouting bags arranged in half or split grouting bags spliced by more than three sections; and a gap is kept between the half-and-half-arranged separate grouting bags to form a drainage ditch.

Further, the weaving material is one or more of polyester fiber, spandex, polypropylene fiber, chinlon, terylene, nylon and plant fiber; each side of the grouting bag is of a structure which is formed by double-layer sewing and is not an arc surface.

Further, the pouring material is one of self-compacting concrete, self-leveling mortar, emulsified asphalt-cement composite mortar or polymer emulsion-cement composite mortar.

Furthermore, the inboard of groove of stepping down with protruding type keeps off and still is equipped with the caulking material layer between the platform, the caulking material layer is the cystosepiment or the prefabricated elastic backing plate of laying.

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 grouting bag; a longitudinally through drainage ditch and/or a transversely through drainage ditch are/is arranged on the concrete base; the fillet rectangle slot hole with the escape canal intercommunication.

The setting of fillet rectangle slot hole can be optimized the track board with the structure of slip casting bag reduces the dead weight, reduces material cost, also can form rainwater flow space, and passes 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.

Further, a use method of the grouting bag for the ballastless track adjusting layer 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, 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; the elastic assembly comprises an upper elastic buffer layer and a lower caulking material layer which are respectively arranged corresponding to the track plate and the grouting bag;

(3) pouring the pouring material into the grouting bag through the 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;

or when the ballastless track is maintained subsequently, taking out the damaged grouting bag between the track slab and the concrete base, filling a new grouting bag, then filling the grouting material into the new grouting bag through a grouting bag opening, stopping grouting after the new grouting bag is full and supports the track slab to a preset height, binding the grouting bag opening, and solidifying, forming and maintaining the grouting bag;

or when the ballastless track is maintained subsequently, the adjusting layer concrete between the original track slab and the concrete base is chiseled and then filled into the grouting bag, then the grouting bag opening is used for filling the grouting material into the grouting bag, the grouting bag is full and supports the track slab to the preset height and then stops grouting and is bound with the grouting bag opening, and the grouting bag is cured and formed and maintained.

That is to say this slip casting bag can use on newly building the track, also can use in later stage track structure repair process, can be when using in later stage repair process to replace original concrete adjustment layer, also can be the original slip casting bag of replacement.

Further, the flow of perfusion in step (2) is as follows:

s1: confirming whether the lower surface of the track slab and the upper surface of the concrete base in each unit are clean or not, if so, carrying out the next step, and if foreign matters exist, carrying out cleaning and carrying out the next step after the concrete base is clean; the influence of external impurities on the grouting bag is reduced, and the grouting bag can be tightly attached to the track slab and/or the concrete base after being filled;

s2: paving and positioning the grouting bags, namely flatly paving the grouting bags on the concrete base in each unit, flattening all edges and all corners of the grouting bags and respectively corresponding to all edges and all corners of the track slab; ensuring that the inner and outer contours of the grouting bag after being filled correspond to the inner and outer contours of the track slab;

s3: mounting and connecting a material conveying pipe, and connecting and fixing the material conveying pipe of the filling equipment with the grouting bag opening; simultaneously mixing the pouring material for standby;

s4: filling the grouting material into the grouting bag, judging whether the grouting bag is full, if not, continuing to fill, and if full, performing the next step;

s5: closing the interface valve and stopping grouting the unit;

s6: binding the grouting bag opening, and arranging a temporary support below the grouting bag opening, wherein the temporary support is a steel bar structure inclined support, so that the grouting bag opening faces upwards and is higher than the grouting bag body, and pouring materials are prevented from overflowing after pouring; after completion of the priming operation of the unit, S1 to S6 are repeated to perform priming of the next unit.

Compared with the prior art, the invention has the beneficial effects that: 1. the grouting bag for the ballastless track adjusting layer is simple in structure, easy to install and use, and capable of being used for installing a ballastless track structure of a newly-built line and adjusting the height of a track slab, so that construction is simplified, formwork support is not needed, and subsequent maintenance and replacement are facilitated; 2. the grouting bag can realize curve superelevation, is easy to adjust the height of the track slab, can replace and maintain the adjusting layer and has low later-stage maintenance cost; 3. 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 two ends of the grouting bag after grouting and filling can also form a groove structure (namely the abdicating groove), so that the grouting bag is matched with the convex baffle table to form limiting; 4. when the grouting bags are laid on the bridge road section, pouring of the concrete base can be omitted, the existing structure on the bridge is directly utilized to arrange the convex blocking platform, the grouting bags are directly arranged between the bridge and the track slab, construction can be simplified, and bridge load can be reduced.

Drawings

FIG. 1 is a schematic overall structure diagram of a grouting bag for a ballastless track adjusting layer according to the invention;

FIG. 2 is an explosion structure diagram of a grouting bag for a ballastless track adjusting layer applied to a ballastless track;

FIG. 3 is a schematic view of an assembly structure of a grouting bag for a ballastless track adjusting layer applied to a ballastless track according to the invention;

FIG. 4 is a schematic cross-sectional view of the grouting bag, the track plate and the convex block in FIG. 3;

FIG. 5 is a schematic overall structure diagram of another grouting bag for a ballastless track adjusting layer according to the invention;

FIG. 6 is a schematic diagram of an explosion structure of another grouting bag for a ballastless track adjusting layer of the invention applied to a ballastless track;

FIG. 7 is a pouring flow chart in the use method of the grouting bag for the ballastless track adjusting layer according to the invention;

in the figure: 1. grouting bags; 101. separate grouting bags; 2. grouting a bag opening; 3. a yielding groove; 4. a round corner rectangular long hole; 5. a convex block platform; 6. a concrete base; 7. a track plate; 8. a fastener system; 9. a steel rail; 10. a card slot; 11. a drainage ditch; 12. a pillow block; 13. an elastic component; 1301. a foam board; 1302. and (3) resin.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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 and 2, a grouting bag for a ballastless track adjusting layer, wherein the grouting bag 1 is a corrosion-resistant high-strength woven bag, at least one side of the grouting bag 1 is provided with a grouting bag opening 2, and the grouting bag opening 2 is provided with a binding piece; the grouting bag 1 is used for being arranged in an area between a concrete base 6 and a track plate 7 so as to adjust and support the track plate 7; the grouting bag 1 is filled with a grouting material; the longitudinal and transverse dimensions of the grouting bag 1 are not less than those of the track plate 7, and the shape of the inner and outer contours of the filled grouting bag 1 is basically consistent with that of the inner and outer contours of the track plate 7 (the dimension is slightly larger); the vertical both ends of slip casting bag 1 are in through setting up protruding type fender platform 5 on the concrete base 6 is spacing respectively, the vertical both ends of slip casting bag 1 be equipped with protruding type fender platform 5 complex groove of stepping down 3.

For convenience of understanding, as shown in fig. 2 to 4, the structure of the ballastless track is as follows: the track plate 7 is arranged above the concrete base 6 and the grouting bag 1, a plurality of pillow blocks 12 are arranged on the longitudinal two sides of the upper surface of the track plate 7 at equal intervals, the steel rail 9 is laid on the pillow blocks 12, and the fastener system 8 is fixed on the pillow blocks 12 in a threaded manner and fastens the steel rail 9; adjacent convex type keeps off and is provided with between the platform 5 block respectively track board 7, the vertical both ends outer wall of track board 7 is equipped with draw-in groove 10 respectively, draw-in groove 10 with convex type keeps off platform 5 one-to-one setting, and is adjacent independently set up and keep clearance distance between the track board 7. An elastic component 13 is further arranged between the inner side of the clamping groove 10 and the inner side of the abdicating groove 3 and the convex blocking platform 5.

Through the setting of slip casting bag 1 and slip casting operation, need not the formwork when adjusting the layer adjustment to realize the curve superelevation, the shape when slip casting bag 1 fills the type can follow the curvature change of track board 7 (or the required curve radian is laid to the rail) and automatic change, automatic fitting curve. Aiming at the adjusting layers with different height requirements, the one-time casting molding is realized by laying the grouting bags 1 with different sizes; if the grouting bag 1 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 up and sunk, the grouting bag 1 can be taken out, the grouting bag with the corresponding size is replaced to adjust the height of the track structure, and the grouting bag 1 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 7 and the upper surface of the concrete base 6, the overall supporting effect on the track slab 7 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 1 after the type is filled in the slip casting also can form groove structure (promptly the groove of stepping down 3) at both ends to with protruding type keeps off the cooperation of platform 5 and forms spacingly.

That is, when a ballastless track structure is laid for the first time, the concrete foundation 6, the grouting bags 1, the track slab 7 and the steel rails 9 can be laid from bottom to top; in the later maintenance and repair process, after the track slab 7 is slightly lifted by the wedge block or the jacking device, the grouting bag 1 is replaced and repaired, and then the track slab 7 is adjusted to a reasonable height position by the grouting bag 1.

It should be noted that when a ballastless track structure is laid on a bridge road section, pouring of the concrete base 6 can be omitted, the convex blocking platform 5 is directly arranged by utilizing the existing structure on the bridge, and the grouting bag 1 is directly arranged between the bridge and the track slab 7, so that the construction can be simplified, and the load of the bridge can be reduced.

Furthermore, protruding type keeps off the platform 5 for equidistance parallel distribution a plurality of, and adjacent protruding type keeps off between the platform 5 the block is provided with respectively the track board 7 forms each unit, independently sets up respectively in each unit slip casting bag 1, adjacent unit the slip casting bag 1 keeps the clearance between.

The convex baffle table 5 can limit the track plate 7 and the grouting bag 1 on one hand, and comprises transverse limit and longitudinal limit to ensure the installation positions of the track plate 7 and the grouting bag 1; on the other hand can let adjacent no direct contact between slip casting bag 1 forms independent unit, makes in every unit slip casting bag 1 is independent setting, does not have longitudinal connection each other, can realize slip casting bag 1's independent convenient change to can realize fast, conveniently that the slip casting bag is damaged to be restoreed, track structure altitude mixture control scheduling problem.

Further, the grouting bag 1 in each unit is of an integral structure, and the sum of the height of the grouting bag 1 after grouting and the height of the track plate 7 is not higher than the height of the convex blocking platform 5. To ensure good support and spacing of the track plate 7.

Furthermore, the corrosion-resistant high-strength woven bag is formed by blending and weaving polyester fibers and spandex. In the weaving and sewing processes, each side of the grouting bag 1 is of a double-layer sewing structure, non-circular-arc sides with thickness are formed, and vertical three-dimensional structures can be formed on each side after grouting, so that a better supporting structure is formed.

Further, the pouring material is self-compacting concrete.

Further, as shown in fig. 4, the elastic component 13 includes an upper elastic buffer layer and a lower caulking material layer, the elastic buffer layer is disposed between the convex block platform 5 and the slot 10 of the track plate 7, and the caulking material layer is disposed between the convex block platform 5 and the abdicating slot 3 of the grouting bag 1; the elastic buffer layer is a laid resin 1302, and the caulking material layer is a laid foam plate 1301.

The stress and the deformation resistance of the track plate 7 and the grouting bag 1 are different, different elastic components 13 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 7 is of a frame structure, a round-corner rectangular long hole 4 which penetrates through the track plate 7 from top to bottom is formed in the middle of the track plate 7, and a corresponding round-corner rectangular long hole 4 is formed in the middle of the grouting bag 1; a drainage ditch 11 which is longitudinally communicated is arranged on the concrete base 6; the round-corner rectangular long hole 4 is communicated with the drainage ditch 11.

The setting of fillet rectangle slot hole 4 can be optimized track board 7 with the structure of slip casting bag 1 reduces the dead weight, reduces material cost, also can form rainwater flow space, and passes 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 7.

Example two:

the difference between the embodiment and the first embodiment is that a grouting bag with another structure is provided.

As shown in fig. 5 and 6, the grouting bags 1 in each unit are of a split structure, and include the grouting bags 101 arranged in half, and the horizontal drainage channels 11 are formed by keeping a pitch between the grouting bags 101 arranged in half.

The grouting bags arranged in this way can be poured separately, and the half grouting bags 101 do not contact with each other, so that a transverse interval is formed, and the interval can be used as a transverse drainage ditch 11; the construction process of arranging the drainage ditch on the concrete base 6 is avoided, the integrity of the concrete base 6 can be kept without influencing drainage while the height adjustment and the support of the track slab 7 by the grouting bag 1 are not influenced.

Example three:

the embodiment provides a use method of a grouting bag for a ballastless track adjusting layer in the first embodiment, and the use method includes the following steps:

(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;

further, as shown in fig. 7, the flow of perfusion in step (2) is as follows:

s1: determining whether the lower surface of the track slab and the upper surface of the concrete base are clean or not, if so, performing the next step, and if foreign matters exist, performing cleaning until the track slab is clean, and performing the next step; the influence of external impurities on the grouting bag is reduced, and the grouting bag can be tightly attached to the track slab and/or the concrete base after being filled;

s2: laying and positioning the grouting bags, namely directly filling the grouting bags into gaps between the track slab and the concrete base, flattening all edges and all corners of the grouting bags and respectively corresponding to all edges and all corners of the track slab; ensuring that the inner and outer contours of the grouting bag after being filled correspond to the inner and outer contours of the track slab;

s5: closing the interface valve and stopping grouting the unit;

s6: binding the grouting bag opening by using a steel wire rope, and arranging a temporary support below the grouting bag opening, wherein the temporary support is a steel bar structure inclined support, so that the grouting bag opening faces upwards and is higher than the grouting bag body, and the poured grouting material is prevented from overflowing; after completion of the priming operation of the unit, S1 to S6 are repeated to perform priming of the next unit.

The grouting bags are laid on a newly-built line, so that construction is simplified, formwork support is not needed, and maintenance is convenient.

Example four:

the difference between the embodiment and the third embodiment is that a method for using the grouting bag in the maintenance process is provided.

(1) When the adjustment layer of original ballastless track structure is the slip casting bag, will the track board with the slip casting bag of damage between the concrete foundation fills in new slip casting bag again after taking out, then rethread slip casting sack is to new fill in the slip casting bag filling material, it is new the slip casting bag is full and supports the track board stops slip casting and ligature after to predetermineeing high the slip casting sack treats slip casting bag set shape and maintenance.

(2) When the adjustment layer of original ballastless track structure is concrete structure, fill in behind the chisel adjustment layer concrete between original track board and the concrete foundation slip casting bag, then again through the slip casting sack to fill in the slip casting bag the filling material, the slip casting bag is full and supports the track board stops slip casting and ligature after to predetermineeing high the slip casting sack is waited the slip casting bag is set solid the shaping and is maintained the slip casting bag

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

1. The grouting bag for the ballastless track adjusting layer is characterized in that the grouting bag is formed by one or more woven materials through spinning, blending or non-woven weaving, a grouting bag opening is formed in at least one side of the grouting bag, and a binding piece is arranged on the grouting bag opening; the grouting bag is arranged in an area between the concrete base and the track slab to adjust and support the track slab; the grouting bag is filled with a grouting material; the longitudinal and transverse dimensions of the grouting bag are not smaller than those of the track slab, and the shape of the inner and outer outlines of the grouting bag after being filled is consistent with that of the inner and outer outlines of the track slab; the vertical both ends of slip casting bag are in through setting up protruding type on the concrete base keeps off the platform respectively and carries on spacingly, the vertical both ends of slip casting bag be equipped with protruding type keep off platform complex groove of stepping down.

2. The grouting bag for the ballastless track adjusting layer according to claim 1, wherein the plurality of convex blocking platforms are distributed in parallel at equal intervals, the track plate is respectively clamped between the adjacent convex blocking platforms to form each unit, the grouting bag is independently arranged in each unit, and a gap is kept between the grouting bags of the adjacent units.

3. The grouting bag for the ballastless track adjusting layer according to claim 2, wherein the grouting bag in each unit is of an integral structure, and the sum of the height of the grouting bag after grouting and the height of the track slab is not higher than the height of the convex blocking platform.

4. The grouting bag for the ballastless track adjusting layer according to claim 2, wherein the grouting bag in each unit is of a split structure and comprises split grouting bags arranged in half or split grouting bags of more than three segments; and a gap is kept between the half-and-half-arranged separate grouting bags to form a drainage ditch.

5. The grouting bag for the ballastless track adjusting layer according to claim 1, wherein the woven material is one or more of polyester fiber, spandex, polypropylene fiber, chinlon, terylene, nylon and plant fiber; each side of the grouting bag is of a structure which is formed by double-layer sewing and is not an arc surface.

6. The grouting bag for the ballastless track adjusting layer of claim 1, wherein the grouting material is one of self-compacting concrete, self-leveling mortar, emulsified asphalt-cement composite mortar, or polymer emulsion-cement composite mortar.

7. The grouting bag for the ballastless track adjusting layer according to claim 1, wherein a caulking material layer is further arranged between the inner side of the abdicating groove and the convex baffle platform, and the caulking material layer is a laid foam board or a prefabricated elastic base plate.

8. The grouting bag for the ballastless track adjusting layer according to claim 1, wherein the track slab is of a frame structure, a round-corner rectangular long hole penetrating up and down is formed in the middle of the track slab, and a corresponding round-corner rectangular long hole is formed in the middle of the grouting bag; a longitudinally through drainage ditch and/or a transversely through drainage ditch are/is arranged on the concrete base; the fillet rectangle slot hole with the escape canal intercommunication.

9. The use method of the grouting bag for the ballastless track adjusting layer, which is disclosed in claim 1, is characterized by comprising the following steps:

10. The use method of the grouting bag for the ballastless track adjusting layer according to claim 9, wherein the flow of the grouting in the step (2) is as follows:

s1: confirming whether the lower surface of the track slab and the upper surface of the concrete base in each unit are clean or not, if so, carrying out the next step, and if foreign matters exist, carrying out cleaning and carrying out the next step after the concrete base is clean;

s2: paving and positioning the grouting bags, namely flatly paving the grouting bags on the concrete base in each unit, flattening all edges and all corners of the grouting bags and respectively corresponding to all edges and all corners of the track slab;

s5: closing the interface valve and stopping grouting the unit;

s6: binding the grouting bag opening, and arranging a temporary support below the grouting bag opening; after completion of the priming operation of the unit, S1 to S6 are repeated to perform priming of the next unit.