CN215481972U - Thin sleeper structure for treating failure of direct-buried base plate of sleeper-free type track bed - Google Patents
Thin sleeper structure for treating failure of direct-buried base plate of sleeper-free type track bed Download PDFInfo
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- CN215481972U CN215481972U CN202121583077.8U CN202121583077U CN215481972U CN 215481972 U CN215481972 U CN 215481972U CN 202121583077 U CN202121583077 U CN 202121583077U CN 215481972 U CN215481972 U CN 215481972U
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Abstract
The utility model discloses a thin sleeper structure for the failure treatment of a sleeper-free type track bed directly-buried base plate, which belongs to the field of the treatment of track bed diseases. Compared with the existing non-pillow type track bed direct-buried base plate failure remediation scheme, the thin sleeper structure for the non-pillow type track bed direct-buried base plate failure remediation can greatly shorten the failure remediation period of the non-pillow type track bed direct-buried base plate on the premise of ensuring the structural strength, the setting precision and the use reliability after the track structure is remedied, reduce the construction cost and has better application prospect and popularization value.
Description
Technical Field
The utility model belongs to the field of ballast bed damage remediation, and particularly relates to a thin sleeper structure for the remediation of the failure of a directly-buried base plate of a sleeper-free type ballast bed.
Background
With the continuous development of the rail transit industry in China, the design forms of rail transit structures are more and more diverse, wherein the rail transit forms comprise a rail transit form which utilizes a pillow-free integral track bed to arrange the rail structures.
In the pillow-free integral ballast bed, a product which is widely applied is a steel spring floating slab ballast bed which has good vibration and noise reduction effects, so that the steel spring floating slab ballast bed is widely used in urban rail transit. However, due to the particularity and complexity of urban rail transit, after the steel spring floating slab track bed is operated and used for a period of time, some problems and deficiencies inevitably occur, so that the pillow-free integral track bed fails, and a series of problems are caused, such as insufficient rail clearance, abnormal fastener state and the like. The problem of insufficient clearance below the rail influences the normal use of rail engineering equipment such as a steel rail emergency device, a small hydraulic rail jack, a rail sawing machine and the like, and has great influence on the installation and maintenance work of related rail engineering; meanwhile, the clearance below the rail is insufficient, so that the distance between the vibration isolator and the steel rail is too close, and the steel rail is in short circuit with the ground in case of leakage of elastic strips or bolts on the rail, thereby causing safety accidents. The fastener state abnormity problems are mainly manifested as the cracking of a base plate at the bottom of the fastener, the sinking of the fastener, the deflection of a sleeve and even the failure of the fastener, which can cause the change of the geometric parameters of the track, influence the driving stability and possibly cause safety accidents in serious cases.
At present, for the failure treatment of a sleeper-free directly-buried base plate, the existing treatment method generally comprises chiseling off a ballast bed at a road section with problems, rearranging reinforcing steel bars, pouring concrete, drilling holes at a cavity position of the ballast bed, filling and lifting by grouting, and the like. The method has the advantages of high cost, long time consumption, large investment, high construction difficulty and long construction period, and urban rail transit skylight points are generally short, so that the existing method is difficult to meet the renovation requirements of the operated lines.
SUMMERY OF THE UTILITY MODEL
Aiming at one or more of the defects or the improvement requirements in the prior art, the utility model provides the thin sleeper structure for the failure remediation of the sleeper-free type directly-buried base plate, which can effectively realize the failure remediation of the sleeper-free type directly-buried base plate, reduce the difficulty in the failure remediation of the sleeper-free type directly-buried base plate of the operated line and shorten the construction period.
To achieve the above objects, the present invention provides a thin sleeper structure for the failure remediation of a sleeper-free type track bed directly buried tie plate, which comprises a sleeper body,
the sleeper main body is sequentially provided with an embedding part and a height adjusting part in the thickness direction;
the embedding part is arranged at the bottom of the sleeper main body and is used for embedding the sleeper main body on the top surface of the sleeper-free type directly-buried base plate, and the thickness of the embedding part is not more than the minimum distance between the top surface of the sleeper-free type directly-buried base plate and the sleeper steel bar in the sleeper-free type directly-buried base plate;
the height adjusting part is arranged at the top of the sleeper main body, protrudes out of the top surface of the sleeper-free track bed direct-buried base plate after being buried in the buried part and is used for adjusting the height of the steel rail.
As a further improvement of the utility model, one side of the sleeper main body, which is far away from the sleeper blocking shoulder, is provided with a plurality of sleeper steel bars;
one end of the sleeper steel bar protrudes out of the end face of the embedded part, and the other end of the sleeper steel bar is embedded in the sleeper main body.
As a further improvement of the utility model, one end of the sleeper steel bar, which is far away from the sleeper main body, is arranged in a bending mode, so that the sleeper steel bar can be hung on the ballast bed steel bar when the embedded part is embedded.
As a further improvement of the utility model, the thickness of the height-adjusting part is usually 5 mm-55 mm, and can be increased according to actual requirements.
As a further improvement of the utility model, the thickness grades of the height-adjusting part are 5mm, 15mm, 25mm, 35mm, 45mm, 55mm and the like.
In a further improvement of the present invention, the sleeper body is formed of reinforced concrete, and the thickness of the embedded portion is 40mm to 60 mm.
In a further improvement of the present invention, the sleeper body is made of a composite material, and the thickness of the embedded portion is 20mm to 40 mm.
As a further improvement of the utility model, the bent structure of the sleeper steel bar end is in the transverse vertical plane or the longitudinal vertical plane of the sleeper main body.
As a further improvement of the utility model, the sleeper main body is provided with an embedded sleeve along the thickness direction for connecting the fasteners.
As a further improvement of the utility model, the sides of the height-adjusting parts, which are far away from the embedded part, are provided with retaining shoulders in pairs.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the technical scheme conceived by the utility model has the following beneficial effects:
(1) the thin sleeper structure for the non-sleeper type track bed direct-buried base plate failure treatment realizes the non-sleeper type track bed direct-buried base plate failure treatment by the corresponding arrangement of the embedding part and the height adjusting part in the sleeper main body and utilizing the optimal design of the sizes of all parts, avoids the change of the geometric dimension of a track and the insufficient clearance under the track caused by the damage of the track bed, thereby influencing the driving safety, ensuring the reliability and the stability after the non-sleeper type track bed direct-buried base plate failure treatment, optimizing the integral stress condition between a vehicle and the track bed and preventing the occurrence of subsequent disease conditions;
(2) according to the thin sleeper structure for the failure treatment of the sleeper-free type track bed directly-buried base plate, the sleeper steel bars are correspondingly arranged on the sleeper main body, so that when the sleeper-free type track bed directly-buried base plate fails to be treated, the sleeper main body and the directly-buried base plate can be stably connected, the reliability and the stability of the thin sleeper after being arranged are ensured, the deflection of the embedded sleeve is avoided, and the arrangement precision of the thin sleeper is improved;
(3) according to the thin sleeper structure for the failure remediation of the sleeper-free type track bed directly-buried base plate, the size and the material of the thin sleeper are optimized, so that the thin sleeper can be applied in different application environments, the application range of the thin sleeper is expanded, and the failure remediation cost of the sleeper-free type track bed directly-buried base plate is reduced;
(4) compared with the existing non-pillow type track bed direct-buried base plate failure remediation scheme, the thin sleeper structure for the non-pillow type track bed direct-buried base plate failure remediation can greatly shorten the failure remediation period of the non-pillow type track bed direct-buried base plate on the premise of ensuring the structural strength, the setting precision and the use reliability after the track structure is remedied, reduce the construction cost and has better application prospect and popularization value.
Drawings
Fig. 1 is a schematic view of the overall structure of a thin sleeper structure in an embodiment of the present invention;
fig. 2 is a schematic view showing the installation of the thin sleeper structure on a sleeper-free type track bed direct buried tie plate in embodiment 1 of the present invention;
fig. 3 is a schematic view showing the installation of the thin sleeper structure on a sleeper-free type track bed direct buried base plate in embodiment 2 of the present invention;
FIG. 4 is a schematic structural diagram of a sleeper-free type track bed directly buried tie plate after failure remediation by using a thin sleeper structure in the embodiment of the utility model;
in all the figures, the same reference numerals denote the same features, in particular:
1. a thin sleeper; 101. a sleeper body; 102. a sleeper shoulder; 103. sleeper reinforcing steel bars; 104. pre-burying a sleeve;
2. directly burying a base plate in a sleeper-free track bed; 201. a ballast bed plate body; 202. reinforcing steel bars of the ballast bed;
3. a steel rail; 4. a fastener.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example (b):
referring to fig. 1 to 3, the thin sleeper structure for treating failure of a sleeper-free type track bed direct-buried tie plate according to the preferred embodiment of the present invention includes a sleeper main body 101 having a block structure, and sleeper shoulders 102 are respectively disposed on both lateral sides of a top surface of the sleeper main body 101, so that a rail 3 can be fixed between the two sleeper shoulders 102 by a fastener 4 when being disposed.
Specifically, the thin sleeper 1 in the preferred embodiment is intended to ensure the rail fixing strength without cutting the bed reinforcing steel 202 in the failure-remedied portion of the sleepless-type direct-buried tie plate 2. In actual installation, the sleeper main body 101 comprises an embedding part and a height adjusting part which are sequentially arranged in the vertical direction; the former is used for being buried in the sleeper-free type directly-buried base plate 2, and the latter is used for protruding the surface of the sleeper-free type directly-buried base plate 2 and used for adjusting the height of the steel rail 3.
As shown in fig. 2, it can be easily seen that the thickness d of the sleeper body 101 is equal to the thickness d of the buried portion1Plus the thickness d of the raised portion2. Thickness d of the buried portion in actual installation1Preferably between 20mm and 60 mm.
More specifically, under normal conditions, the thickness of the buried portion is between 40mm and 60mm, and at this time, the distance from the top surface of the track bed plate body 201 to the track bed reinforcing steel bar 202 positioned at the topmost layer in the thickness direction of the sleeper-free type direct-buried base plate 2 is not less than the thickness of the buried portion (that is, the thickness of the buried portion is not more than the minimum distance between the top surface of the sleeper-free type direct-buried base plate 2 and the track bed reinforcing steel bar 202) so as to ensure that the sleeper reinforcing steel bar 202 is not damaged by the burying of the buried portion, thereby ensuring the structural stress stability of the sleeper-free type direct-buried base plate 2 after the thin sleeper 1 is set, and having little influence on the bearing capacity and the overall performance of the sleeper-free type direct-buried base plate 2.
In a special case, the distance from the top surface of the track bed plate body 201 to the track bed reinforcing steel bar 202 positioned at the topmost layer in the thickness direction of the sleeper-free type directly-buried tie plate 2 is small, and at this time, in order to avoid damage to the track bed reinforcing steel bar 202 after the thin sleeper 1 is installed, the installation thickness of the buried portion is preferably 20mm to 40 mm; however, since the buried portion is buried at a low depth, in order to ensure that the bonding force between the thin sleeper 1 and the sleeper-free directly-buried base plate 2 meets the design requirements, the preparation material of the thin sleeper 1 is replaced by a high-strength composite material from ordinary reinforced concrete, so that the strength of the thin sleeper is increased, and the problem of small bonding force between the thin sleeper 1 and the sleeper-free directly-buried base plate 2 is solved.
In the preferred embodiment, the thickness d of the raised portion of the low profile sleeper 12Typically 5mm to 55mm, so that the thickness of the load-bearing portion of the thin sleeper 1 (i.e., the sleeper body 101) is about 50mm to 110 mm. However, the thickness of the height-adjusting part can be correspondingly beyond the above range according to the actual construction requirements, for example, in the case of treating some extreme diseases, the thickness of the height-adjusting part can even reach or exceed 150mm, which is preferable according to the actual situation. In addition, in actual production, it is preferable to provide thin sleepers 1 of various sizes as candidates, and the thickness of the sleeper body 101 differs between different thin sleepers 1. Meanwhile, in the preferred embodiment, the general type and the special type are classified according to the thickness of the buried portion, as described above.
Secondly, in the preferred embodiment, according to the difference of the thickness of the height-adjusting part, the thin sleepers 1 are divided into different adjustment levels, and further preferably, the thin sleepers are divided into 6 levels, namely 5mm levels, 15mm levels and 25mm levels, and the like, and the steps are carried out until 55mm levels. When the height adjustment amount is 0-10 mm, a thin sleeper 1 of 5mm grade is selected, when the height adjustment amount is 10-20 mm, a thin sleeper 1 of 15mm grade is selected, and the like.
It can be understood that the thickness range of the raised part of the thin sleeper is a common example and can be increased according to actual requirements.
In addition, the width b of the tie shoulder1The shoulder angle θ can be designed by considering the curve radius of the line, the running speed of the train, the axle weight and other factors, and the line with smaller curve radius, higher speed and larger axle weight is provided with larger shoulder width and angle, or vice versa, so the details are not repeated herein. Moreover, according to different lines and fastener types, the thin sleeper can be provided with no sleeper blocking shoulder.
Further, as shown in fig. 2 and fig. 3, in the preferred embodiment, a plurality of sleeper reinforcements 103 are disposed on a side of the sleeper body 101 away from the sleeper shoulder 102, one end of each sleeper reinforcement is embedded in the sleeper body 101, and the other end of each sleeper reinforcement extends out of the bottom surface of the sleeper body 101 and extends into the sleeper-free directly-buried backing plate 2 when the thin sleeper 1 is disposed, so as to increase the bonding force and the pulling resistance between the thin sleeper 1 and the sleeper-free directly-buried backing plate 2 and ensure the reliability and stability of the disposition of the thin sleeper 1.
Preferably, the ends of the sleeper reinforcements 103 facing away from the sleeper body 101 are arranged in a bent manner, so that when the thin sleeper 1 is arranged on a sleeper-free directly-buried tie plate 2, the sleeper reinforcements 103 can be vertically hung on the bed reinforcements 202, as shown in fig. 3. Meanwhile, in the preferred embodiment, the tie rebars 103, the ends of which are provided in a bent form, include two types in the lateral vertical plane and the longitudinal vertical plane of the tie body 101 for hanging on the bed rebars 202 arranged in the lateral direction and the longitudinal direction, respectively. In addition, in order to further improve the installation reliability of the thin sleeper 1, the sleeper reinforcements 103 and the ballast reinforcements 202 are connected to each other in a manner including, but not limited to, reinforcement bonding and welding.
Further, as shown in fig. 1, the sleeper main body 101 in the preferred embodiment is also embedded with an embedded sleeve 104, which penetrates the sleeper main body 101 in the thickness direction of the sleeper main body 101, and one end of which protrudes from the end surface of the embedded portion and the other end of which does not protrude from the end surface of the height-adjusting portion. Meanwhile, the embedded sleeve 104 and the sleeper reinforcing steel bar 103 are integrally formed when the thin sleeper 1 is formed, respectively, and are used for connecting the fastener 4 when the thin sleeper 1 is installed.
When the sleeper-free type track bed directly-buried base plate 2 is partially settled in the using process, for example, an area surrounded by a dotted line in fig. 4, at this time, the fastener 4 can be taken down from the sleeper-free type track bed directly-buried base plate 2, a corresponding embedding groove is formed in the setting position of the fastener 4, then the corresponding thin sleeper 1 is embedded into the embedding groove, the sleeper steel bar 103 of the thin sleeper 1 is connected with the track bed steel bar 202, and then the thin sleeper 1 and the sleeper-free type track bed directly-buried base plate 2 are cast into a whole; and after the casting and forming, restoring the steel rail 3, thereby finishing the partial failure treatment of the sleeper-free type directly-buried base plate 2.
Compared with the existing non-pillow type track bed direct-buried base plate failure treatment scheme, the thin sleeper structure for the non-pillow type track bed direct-buried base plate failure treatment can greatly shorten the failure treatment period of the non-pillow type track bed direct-buried base plate on the premise of ensuring the structural strength, the setting precision and the use reliability after the track structure treatment, reduce the construction cost and has better application prospect and popularization value.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A thin sleeper structure for the failure treatment of a directly buried base plate of a sleeper-free type track bed comprises a sleeper main body and is characterized in that an embedding part and a height-adjusting part are sequentially arranged in the thickness direction of the sleeper main body;
the embedding part is arranged at the bottom of the sleeper main body and is used for embedding the sleeper main body on the top surface of the sleeper-free type directly-buried base plate, and the thickness of the embedding part is not more than the minimum distance between the top surface of the sleeper-free type directly-buried base plate and the sleeper steel bar in the sleeper-free type directly-buried base plate;
the height adjusting part is arranged at the top of the sleeper main body, protrudes out of the top surface of the sleeper-free track bed direct-buried base plate after being buried in the buried part and is used for adjusting the height of the steel rail.
2. The thin sleeper structure for sleeper-free track bed direct-buried tie plate failure remediation of claim 1, wherein a side of the sleeper body facing away from the sleeper shoulder is provided with a plurality of sleeper rebars;
one end of the sleeper steel bar protrudes out of the end face of the embedded part, and the other end of the sleeper steel bar is embedded in the sleeper main body.
3. The thin sleeper structure for sleeper-free track bed direct burial pad failure remedy according to claim 2, wherein an end of the sleeper reinforcement apart from the sleeper main body is provided in a bent form so that the sleeper reinforcement may be hung on the track bed reinforcement when the buried portion is buried.
4. The thin sleeper structure for sleeper-free track bed direct burial pad failure remediation of claim 1, wherein the raised portion has a thickness of 5-55 mm.
5. The thin sleeper structure for no-pillow type track bed direct burial pad failure remedy according to claim 4, wherein the height adjusting grade of the height adjusting portion is determined as one grade every 10mm within 0-60 mm, and the height adjusting size of each grade is respectively determined as 5mm, 15mm, 25mm, 35mm, 45mm and 55 mm.
6. The thin sleeper structure for pillow-free track bed direct burial pad failure remedy according to claim 1, wherein the sleeper main body is formed by molding reinforced concrete, and a thickness of the buried portion is 40mm to 60 mm.
7. The thin sleeper structure for pillow-free track bed direct burial pad failure remediation of claim 1, wherein the sleeper body is made of a composite material, and the thickness of the buried portion is 20mm to 40 mm.
8. The low-profile sleeper structure for sleeper-free track bed direct burial pad failure remediation of claim 3, wherein said bent structure of sleeper rebar end portions is in either a lateral vertical plane or a longitudinal vertical plane of said sleeper body.
9. The thin sleeper structure for sleeper-free type track bed direct burial base plate failure remediation according to any one of claims 1 to 8, wherein an embedded sleeve is arranged on the sleeper body in the thickness direction and used for connection of a fastener.
10. The thin sleeper structure for sleeper-free track bed direct burial bolster failure remediation as claimed in any one of claims 1 to 8, wherein blocking shoulders are arranged on one sides, away from the burying portion, of the height adjusting portions in pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121583077.8U CN215481972U (en) | 2021-07-13 | 2021-07-13 | Thin sleeper structure for treating failure of direct-buried base plate of sleeper-free type track bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121583077.8U CN215481972U (en) | 2021-07-13 | 2021-07-13 | Thin sleeper structure for treating failure of direct-buried base plate of sleeper-free type track bed |
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| Publication Number | Publication Date |
|---|---|
| CN215481972U true CN215481972U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121583077.8U Active CN215481972U (en) | 2021-07-13 | 2021-07-13 | Thin sleeper structure for treating failure of direct-buried base plate of sleeper-free type track bed |
Country Status (1)
| Country | Link |
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| CN (1) | CN215481972U (en) |
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