CN114182576A - Adjustable plate type ballastless track suitable for area with large foundation deformation risk - Google Patents
Adjustable plate type ballastless track suitable for area with large foundation deformation risk Download PDFInfo
- Publication number
- CN114182576A CN114182576A CN202111512607.4A CN202111512607A CN114182576A CN 114182576 A CN114182576 A CN 114182576A CN 202111512607 A CN202111512607 A CN 202111512607A CN 114182576 A CN114182576 A CN 114182576A
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- Prior art keywords
- adjustable
- base plate
- bag
- mortar
- plate
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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
Abstract
The invention relates to an adjustable plate type ballastless track suitable for an area with a large foundation deformation risk. Once the conventional ballastless track is formed and is difficult to adjust, when an offline foundation is deformed greatly, the offline foundation is adjusted by adopting modes such as local cutting and the like, so that the implementation difficulty is high. The adjustable mortar bed comprises a base plate, wherein a prefabricated track plate is arranged above the base plate, and an adjustable mortar bed bag is arranged between the prefabricated track plate and the base plate and comprises at least two layers of mortar bags; spacing bosses are longitudinally arranged on the base plate at intervals, spacing through holes corresponding to the spacing bosses are formed in the prefabricated track plate and the adjustable mortar layer bag, and the spacing bosses of the base plate are inserted into the spacing through holes of the prefabricated track plate and the adjustable mortar layer bag. When the off-line foundation is greatly settled and deformed, the invention adjusts and restores the elevation of the rail surface by lifting the rail plate and pouring quick setting mortar into the reserved adjustable mortar layer bag, thereby obviously improving the adjusting capability and the adaptability to the deformation of the off-line foundation.
Description
Technical Field
The invention relates to the field of track engineering, in particular to an adjustable plate type ballastless track suitable for an area with a large foundation deformation risk.
Background
The ballastless track has the advantages of good stability, tidiness, attractiveness, less maintenance and repair workload and the like, and is widely popularized and applied at home and abroad. The ballast bed of the conventional ballastless track is of a reinforced concrete structure, adopts a form of partial cast-in-place (plate-type ballastless track) or total cast-in-place (double-block-type elastic support block-type ballastless track), and has poor adaptability to the deformation of the foundation under the track once the track is formed and is difficult to adjust. When the deformation of the off-line foundation exceeds the adjusting capacity of a ballastless track steel rail fastener, the off-line foundation is generally maintained and adjusted by adopting modes of local cutting, dismantling, reconstruction and the like, the implementation difficulty is high, the time consumption is long, the cost is high, and the interference on the normal operation of a line is large.
Disclosure of Invention
The invention aims to provide an adjustable plate type ballastless track suitable for an area with a large foundation deformation risk, and the defect that the conventional ballastless track is small in adjusting capacity and poor in deformation adaptability to an offline foundation is overcome by restoring the elevation of a track surface through the adjustment of an adjustable mortar layer bag after the offline foundation is greatly deformed.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an adjustable plate type ballastless track suitable for an area with a large foundation deformation risk comprises a base plate, wherein a prefabricated track plate is arranged above the base plate, an adjustable mortar layer bag is arranged between the prefabricated track plate and the base plate, and the adjustable mortar layer bag comprises at least two mortar bags;
spacing bosses are longitudinally arranged on the base plate at intervals, spacing through holes corresponding to the spacing bosses are formed in the prefabricated track plate and the adjustable mortar layer bag, and the spacing bosses of the base plate are inserted into the spacing through holes of the prefabricated track plate and the adjustable mortar layer bag.
Furthermore, the side of the mortar bag is provided with a grouting hole and an exhaust hole.
Furthermore, the plane of the mortar bag is rectangular, the grouting holes and the exhaust holes are respectively positioned at the opposite corners of the mortar bag, and the grouting holes and the exhaust holes of two vertically adjacent mortar bags are arranged in a staggered manner.
Furthermore, a displacement adjusting structure is arranged between the side surface of the limiting boss and the prefabricated track slab and between the side surface of the limiting boss and the adjustable mortar layer bag, and the displacement adjusting structure is an epoxy resin filling bag, an elastic base plate or the combination of the epoxy resin filling bag and the elastic base plate.
Furthermore, one of the adjustable mortar layer bags is a construction filling bag, and the rest of the adjustable mortar layer bags are adjustment reserved bags.
In one embodiment of the present application, the base plates are arranged in blocks along the longitudinal direction, and each base plate is provided with two limiting bosses longitudinally.
Furthermore, each base plate is provided with a prefabricated track plate and an adjustable mortar layer bag which correspond to the base plate, and the prefabricated track plate and the adjustable mortar layer bag are provided with two limiting through holes corresponding to the limiting bosses.
In another embodiment of the application, the base plates are arranged in a longitudinally partitioned mode, a plurality of prefabricated track plates are longitudinally arranged on each base plate, and adjustable mortar layer bags corresponding to the prefabricated track plates are arranged below the prefabricated track plates.
Furthermore, a plurality of limiting bosses are longitudinally arranged on each base plate and are positioned at the joint of two longitudinally adjacent prefabricated track plates.
Furthermore, the longitudinal two sides of the prefabricated track plate and the adjustable mortar layer bag are provided with semi-limiting grooves corresponding to the limiting bosses.
Compared with the prior art, the invention has the following beneficial effects:
when the existing line foundation deformation exceeds the adjusting capacity of the fastener, the invention can restore the rail surface elevation by filling quick-setting mortar or grouting material in the reserved layer of the adjustable mortar layer bag, thereby achieving the purpose of quickly restoring the track linearity, overcoming the defects of small adjusting capacity and poor adaptability to the lower foundation deformation of the existing ballastless track, and obviously reducing the maintenance workload of the track system in the unfavorable geological area.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.
FIG. 1 is an elevation view of the present invention in the structural form a;
FIG. 2 is an elevation view of the structural style b of the present invention;
FIG. 3 is a plan view of the present invention in the structural form a;
FIG. 4 is a plan view of the structural style b of the present invention;
FIG. 5 is a plan view of the adjustable mortar layer bag of the present invention in type a;
FIG. 6 is a plan view of the adjustable mortar layer bag structure type b of the present invention;
FIG. 7 is a longitudinal sectional view of the adjustable mortar layer bag structure type a of the present invention;
FIG. 8 is a longitudinal sectional view of the adjustable mortar layer bag structure type b of the present invention;
FIG. 9 is a cross-sectional view of the adjustable mortar layer bag structure of the present invention in type a;
FIG. 10 is a cross-sectional view of the adjustable mortar layer bag structure type b of the present invention;
FIG. 11 is a schematic view of a structural pattern a of the base plate of the present invention.
FIG. 12 is a schematic view of a structural form b of the base plate of the present invention.
The labels in the figure are:
1. the steel rail, 2, a fastener, 3, a prefabricated rail plate with a structural form a, 4, an adjustable mortar bag with a structural form a, 4-1, a first mortar bag grouting hole with a structural form a, 4-2, a first mortar bag exhaust hole with a structural form a, 4-3, a reserved second mortar bag grouting hole with a structural form a, 4-4, a reserved second mortar bag exhaust hole with a structural form a, 4-5, a reserved third mortar bag grouting hole with a structural form a, 4-6, a reserved third mortar bag exhaust hole with a structural form a, 5, a limiting boss, 6, a base plate with a structural form a, 7, an epoxy resin grouting bag, 8, an elastic base plate, 9, an adjustable mortar bag with a structural form b, 9-1, a first mortar bag grouting hole with a structural form b, 9-2, a first mortar bag exhaust hole with a structural form b, 9-3, a reserved second mortar bag grouting hole of the structural type b, 9-4, a reserved second mortar bag exhaust hole of the structural type b, 9-5, a reserved third mortar bag grouting hole of the structural type b, 9-6, a reserved third mortar bag exhaust hole of the structural type b, 10, a prefabricated rail plate of the structural type b and 11, a base plate of the structural type b.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention provides an adjustable plate type ballastless track suitable for an area with a large foundation deformation risk. The prefabricated track slab is of a reinforced concrete structure, is prefabricated in a factory, and can adopt a prestressed structure as required to enhance the durability of the prefabricated track slab. An adjustable mortar layer bag is arranged between the prefabricated track plate and the base plate, and comprises at least two layers of mortar bags, preferably 2-4 layers. Spacing bosses are longitudinally arranged on the base plate at intervals, spacing through holes corresponding to the spacing bosses are formed in the prefabricated track plate and the adjustable mortar layer bag, and the spacing bosses of the base plate are inserted into the spacing through holes of the prefabricated track plate and the adjustable mortar layer bag. The elevation of the top surface of the limiting boss is not less than 50mm higher than the normal elevation of the prefabricated track slab and does not exceed the elevation of the track surface.
The side of the mortar bag is provided with a grouting hole and an exhaust hole, the plane of the mortar bag is rectangular, the grouting hole and the exhaust hole are respectively positioned at the opposite corners of the mortar bag, and the grouting hole and the exhaust hole of two vertically adjacent mortar bags are arranged in a staggered manner. One of the adjustable mortar layer bags is a construction filling bag, and the rest of the adjustable mortar layer bags are adjustment reserved bags.
And a displacement adjusting structure is arranged between the side surface of the limiting boss and the prefabricated track slab and between the side surface of the limiting boss and the adjustable mortar layer bag, and the displacement adjusting structure is an epoxy resin filling bag, an elastic base plate or the combination of the epoxy resin filling bag and the elastic base plate. The thickness of the filling epoxy resin filling bag is 10-50mm, and the longitudinal and transverse limiting of the prefabricated track slab can be realized. When the foundation is transversely deviated, the transverse displacement can be adjusted by changing the thickness of the epoxy resin filling bag in the deviation direction, and the 10-50mm epoxy resin filling bag or the elastic base plate is arranged between the limiting boss and the prefabricated track slab longitudinally to adapt to the longitudinal temperature expansion amount of the track slab. When the longitudinal length between the two limiting through holes on the track plate generates temperature expansion deformation, the elastic cushion plate can be compressed or released to adapt to the deformation.
The structural forms of the invention can comprise the following two types:
1. structural form a:
as shown in figure 3, the base plates are arranged in blocks along the longitudinal direction, and each base plate is longitudinally provided with two limiting bosses. Each base plate is provided with a prefabricated track plate corresponding to the base plate and an adjustable mortar layer bag, and the prefabricated track plate and the adjustable mortar layer bag are provided with two limiting through holes corresponding to the limiting bosses.
2. Structural form b:
as shown in fig. 4, the base plates are arranged in blocks along the longitudinal direction, a plurality of prefabricated track plates are longitudinally arranged on each base plate, and an adjustable mortar layer bag corresponding to each prefabricated track plate is arranged below each prefabricated track plate. And a plurality of limiting bosses are longitudinally arranged on each base plate and are positioned at the joint of two longitudinally adjacent prefabricated track plates. The longitudinal two sides of the prefabricated track plate and the adjustable mortar layer bag are provided with semi-limiting grooves corresponding to the limiting bosses, and the front side and the rear side of the prefabricated track plate and the adjustable mortar layer bag form limiting through holes.
The adjustable mortar layer between the base plate and the prefabricated track plate is designed into a multi-layer mortar bag structure, and when the track engineering construction is carried out, the adjustment of the construction error of the track system is realized through the pouring of a layer of mortar bag; when the foundation engineering is greatly deformed and exceeds the adjusting capacity of the fastener during operation, the elevation of the track can be adjusted and recovered by pouring the reserved second mortar bag, the reserved third mortar bag and the like. The base and the integrated on-site pouring molding of the limiting boss are realized, the boss can be arranged in the middle of the plate body or at two end positions (respectively in a structural type a and a structural type b) according to on-site conditions, a plurality of layers of mortar bags are laid on the top surface of the base after the base and the limiting boss are molded, the prefabricated track plate is installed, the first mortar bag of the adjustable mortar bag is filled in the prefabricated track plate after the prefabricated track plate is accurately adjusted according to the designed position through the track panel frame, the vertical stable support of the prefabricated track plate is realized, and the prefabricated track plate is limited by the limiting boss to longitudinally and transversely displace.
The mortar bag is made of rubber synthetic fiber geotextile or composite anti-seepage non-woven fabric, is formed by filling quick-setting mortar or grouting material in a cast-in-place manner, and can be made of a material which is self-leveling, self-compacting, micro-expanding, early-strength and good in durability. During site operation, the adjustment of a track system construction error and the vertical support of the prefabricated track slab are realized by pouring a layer of mortar bag, and rapid-hardening mortar or grouting material can be filled layer by layer according to the deformation condition of an offline foundation and the requirement of track adjustment in an operation period. The thickness of each layer of the mortar bag after being filled is 2-6cm, each layer is provided with a filling hole and an exhaust hole, the exhaust hole is also used as an observation hole, the aperture is 2-5cm, and the mortar bag is used for filling, exhausting and observing mortar. The pouring holes and the exhaust holes of each layer of mortar bag are arranged on the two longitudinal side surfaces of the mortar bag in a diagonal manner and are 5-50cm away from the end part, and the pouring holes and the exhaust holes between the upper layer and the lower layer are arranged at the two longitudinal ends of the mortar bag in a staggered manner. When the rapid hardening mortar or the grouting material is poured to the other diagonal position, the pouring amount of the rapid hardening mortar or the grouting material and the filling state of the mortar bag are judged through the exhaust hole. When the deformation of foundation surpassed fastener adjustable range under the operation period line, can change the fastener into standard fastener state, through carrying out the pouring of rapid hardening mortar or grout material to second floor mortar bag, third floor mortar bag etc. of reserving, confirm the filling layer height of required mortar bag according to the adjustment elevation demand of structural layer, realize quick, convenient restoration to the track elevation.
Two embodiments of the invention are described in further detail below with reference to the accompanying drawings:
example 1 (structural form a):
as shown in fig. 1, 3, 5, 7, 9 and 11, the base plates 6 of the structural type a are arranged in blocks along the longitudinal direction, and each base plate is provided with a prefabricated track plate corresponding to the base plate and an adjustable mortar layer bag, namely a prefabricated track plate 3 of the structural type a and an adjustable mortar layer bag 4 of the structural type a. The adjustable mortar bed bag 4 of the structural type a can comprise three layers of mortar bags, wherein one layer is a construction pouring bag, and the other two layers are adjustment reserved bags. And grouting holes and exhaust holes of the mortar bags of all layers are arranged in a staggered and opposite-angle manner.
Two limit bosses with rectangular cross sections are longitudinally arranged on the base plate 6 of each structural type a. Rectangular limiting through holes are correspondingly formed in the prefabricated track plate above the limiting boss, and the limiting boss is located in the limiting through holes.
Example 2 (structural form b):
as shown in fig. 2, 4, 6, 8, 10 and 12, the base plate 11 of the structural type b is arranged in blocks along the longitudinal direction, but a plurality of prefabricated rail plates 10 of the structural type b are longitudinally arranged on each base plate. An adjustable mortar layer bag 9 with the structure type b is arranged below each prefabricated track plate 10 with the structure type b and corresponds to the prefabricated track plate. The adjustable mortar layer bag 9 of the structural type b can comprise three layers of mortar bags, wherein one layer is a construction pouring bag, and the other two layers are adjustment reserved bags. And grouting holes and exhaust holes of the mortar bags of all layers are arranged in a staggered and opposite-angle manner.
Different from the embodiment 1, a plurality of limit bosses are longitudinally arranged on the base plate 11 of each structural style b and are positioned at the joint of two longitudinally adjacent prefabricated track plates. The vertical both sides of prefabricated track board and adjustable mortar layer bag are provided with the semi-spacing recess that corresponds spacing boss, constitute spacing through-hole around, and spacing boss is located spacing through-hole.
The adjustable slab ballastless track can be adjusted in the following way.
The first method is as follows: when the foundation deformation is within the adjustable range of the fastener, the rail surface elevation is recovered by replacing fastener base plates with different thicknesses;
the second method comprises the following steps: when the foundation deformation exceeds the adjusting capacity of the fastener, the fastener is replaced by a standard fastener state, and then rapid-hardening mortar or grouting material is poured into the mortar bag reserved in the adjustable mortar layer bag to restore the rail surface elevation.
The adjustable plate type ballastless track can be quickly and conveniently adjusted and repaired in a corresponding mode according to the deformation of the off-line foundation.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. The utility model provides an adjustable board-like ballastless track suitable for great region of basic deformation risk which characterized in that:
the adjustable plate type ballastless track comprises a base plate, a prefabricated track plate is arranged above the base plate, an adjustable mortar layer bag is arranged between the prefabricated track plate and the base plate, and the adjustable mortar layer bag comprises at least two mortar bags;
spacing bosses are longitudinally arranged on the base plate at intervals, spacing through holes corresponding to the spacing bosses are formed in the prefabricated track plate and the adjustable mortar layer bag, and the spacing bosses of the base plate are inserted into the spacing through holes of the prefabricated track plate and the adjustable mortar layer bag.
2. The adjustable slab ballastless track applicable to the area with the large foundation deformation risk according to claim 1, characterized in that:
and the side surface of the mortar bag is provided with a grouting hole and an exhaust hole.
3. The adjustable slab ballastless track applicable to the area with the large foundation deformation risk according to claim 2, characterized in that:
the plane of the mortar bag is rectangular, the grouting holes and the exhaust holes are respectively positioned at the opposite corners of the mortar bag, and the grouting holes and the exhaust holes of two vertically adjacent mortar bags are arranged in a staggered manner.
4. The adjustable slab ballastless track suitable for the area with the large foundation deformation risk according to claim 3, characterized in that:
and a displacement adjusting structure is arranged between the side surface of the limiting boss and the prefabricated track slab and between the side surface of the limiting boss and the adjustable mortar layer bag, and the displacement adjusting structure is an epoxy resin filling bag, an elastic base plate or the combination of the epoxy resin filling bag and the elastic base plate.
5. The adjustable slab ballastless track suitable for the area with the large foundation deformation risk according to claim 4, wherein:
one of the adjustable mortar layer bags is a construction filling bag, and the rest of the adjustable mortar layer bags are adjustment reserved bags.
6. The adjustable slab ballastless track suitable for the area with the large foundation deformation risk according to claim 5, wherein:
the base plate is arranged in blocks along the longitudinal direction, and two limiting bosses are longitudinally arranged on each base plate.
7. The adjustable slab ballastless track suitable for the area with the large foundation deformation risk according to claim 6, wherein:
each base plate is provided with a prefabricated track plate corresponding to the base plate and an adjustable mortar layer bag, and the prefabricated track plate and the adjustable mortar layer bag are provided with two limiting through holes corresponding to the limiting bosses.
8. The adjustable slab ballastless track suitable for the area with the large foundation deformation risk according to claim 5, wherein:
the base plates are arranged in a longitudinal blocking mode, a plurality of prefabricated track plates are longitudinally arranged on each base plate, and adjustable mortar layer bags corresponding to the prefabricated track plates are arranged below the prefabricated track plates.
9. The adjustable slab ballastless track suitable for the area with the large foundation deformation risk according to claim 8, characterized in that:
and a plurality of limiting bosses are longitudinally arranged on each base plate and are positioned at the joint of two longitudinally adjacent prefabricated track plates.
10. The adjustable slab ballastless track suitable for the area with the large foundation deformation risk according to claim 9, characterized in that:
the vertical both sides of prefabricated track board and adjustable mortar layer bag are provided with the semi-stop groove that corresponds spacing boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111512607.4A CN114182576A (en) | 2021-12-08 | 2021-12-08 | Adjustable plate type ballastless track suitable for area with large foundation deformation risk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111512607.4A CN114182576A (en) | 2021-12-08 | 2021-12-08 | Adjustable plate type ballastless track suitable for area with large foundation deformation risk |
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| Publication Number | Publication Date |
|---|---|
| CN114182576A true CN114182576A (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111512607.4A Pending CN114182576A (en) | 2021-12-08 | 2021-12-08 | Adjustable plate type ballastless track suitable for area with large foundation deformation risk |
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| CN (1) | CN114182576A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387164A (en) * | 2022-09-27 | 2022-11-25 | 中铁第四勘察设计院集团有限公司 | Reliably-operated plate-type ballastless track structure and construction method and adjustment method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0874201A (en) * | 1994-09-08 | 1996-03-19 | Railway Technical Res Inst | Improvement of railroad ground |
| JP2012180634A (en) * | 2011-02-28 | 2012-09-20 | Allen:Kk | Repair method of slab track, bag for repair, and resin injection device |
| CN205242181U (en) * | 2015-09-14 | 2016-05-18 | 中国铁道科学研究院金属及化学研究所 | Novel board -like ballastless track structure |
| CN207919250U (en) * | 2017-12-15 | 2018-09-28 | 上海工程技术大学 | A kind of fill-type adjusting backing plate |
| CN112030630A (en) * | 2020-09-27 | 2020-12-04 | 武汉比邻科技发展有限公司 | Grouting bag for ballastless track adjusting layer and using method thereof |
-
2021
- 2021-12-08 CN CN202111512607.4A patent/CN114182576A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0874201A (en) * | 1994-09-08 | 1996-03-19 | Railway Technical Res Inst | Improvement of railroad ground |
| JP2012180634A (en) * | 2011-02-28 | 2012-09-20 | Allen:Kk | Repair method of slab track, bag for repair, and resin injection device |
| CN205242181U (en) * | 2015-09-14 | 2016-05-18 | 中国铁道科学研究院金属及化学研究所 | Novel board -like ballastless track structure |
| CN207919250U (en) * | 2017-12-15 | 2018-09-28 | 上海工程技术大学 | A kind of fill-type adjusting backing plate |
| CN112030630A (en) * | 2020-09-27 | 2020-12-04 | 武汉比邻科技发展有限公司 | Grouting bag for ballastless track adjusting layer and using method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387164A (en) * | 2022-09-27 | 2022-11-25 | 中铁第四勘察设计院集团有限公司 | Reliably-operated plate-type ballastless track structure and construction method and adjustment method thereof |
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