CN111851166A - Rubber cast iron sleeper plate type vibration damping system - Google Patents
Rubber cast iron sleeper plate type vibration damping system Download PDFInfo
- Publication number
- CN111851166A CN111851166A CN202010793573.XA CN202010793573A CN111851166A CN 111851166 A CN111851166 A CN 111851166A CN 202010793573 A CN202010793573 A CN 202010793573A CN 111851166 A CN111851166 A CN 111851166A
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- China
- Prior art keywords
- sleeper
- rubber
- cast iron
- self
- cushion layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 241001669679 Eleotris Species 0.000 title claims abstract description 90
- 238000013016 damping Methods 0.000 title claims abstract description 62
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 58
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 24
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 4
- 239000011376 self-consolidating concrete Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 8
- 239000004567 concrete Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
A rubber cast iron sleeper plate type vibration damping system comprises a steel rail, a fastener base plate, a sleeper and a railway bed, wherein the sleeper is a cast iron sleeper, and the fastener base plate and the cast iron sleeper are integrally formed; the bottom surface of the sleeper is symmetrically provided with rubber vibration damping pads, and the sleeper is provided with a rubber sheath which wraps the bottom of the rubber vibration damping pads and extends upwards to the side surface wrapping the sleeper; the ballast bed is arranged below the rubber sheath and consists of a self-compacting mortar cushion layer or a common reinforced concrete cushion layer; the self-compacting mortar cushion layer or the common reinforced concrete cushion layer is filled below the rubber sheath and around the side surface. The invention can greatly reduce the volume of the vibration-participating mass under the condition of the same mass, thereby achieving the purpose of greatly reducing the height of the track structure.
Description
Technical Field
The invention relates to the field of rail engineering, in particular to a rubber cast iron sleeper plate type vibration damping system which is suitable for vibration damping sections with height limitation of the track structure of the existing line reconstruction and newly-built lines.
Background
The common track structure generally consists of steel rails, fasteners, sleepers and an integral track bed in an underground section, wherein the sleepers and the track bed are made of reinforced concrete. The bearing capacity and the durability of the track structure can be met by considering the stress and the construction problems of the concrete structure, and the concrete structure needs to have a certain thickness. According to the classical vibration theory, the rail vibration reduction measures are generally to reduce the rail rigidity and increase the vibration participating mass. The quality of the steel rail and the fastener is basically unchanged, and the sleeper and the track bed are made of reinforced concrete structures and have relatively low density, so that the volume of the reinforced concrete forming the sleeper or the track bed is not suitable to be too small. By combining the factors, even under a rectangular section, the minimum track height of the conventional track structure of the subway is generally above 560mm, and the requirement on circular and horseshoe-shaped sections is greater. According to the vibration theory, the mass of the track bed or the sleeper is increased, and enough inertia mass can be provided to offset the dynamic load generated by the vehicle, so that the dynamic load transmitted to the foundation structure and diffused is obviously reduced, and the aim of vibration reduction is fulfilled. However, when the heights of the existing vibration-damping track and the newly-built vibration-damping track are limited, the volumes of reinforced concrete forming the sleepers or the ballast beds are limited, and therefore, the problem of vibration damping of the sleepers and the ballast beds when the heights of the vibration-damping track and the newly-built vibration-damping track are limited needs to be solved urgently.
Disclosure of Invention
The invention provides a rubber cast iron sleeper plate type vibration damping system, which aims to solve the technical problem that when the height of an existing vibration damping track and a newly-built vibration damping track is limited, the height of the track required by a common reinforced concrete track structure is large, and the vibration damping requirement cannot be met.
The invention is realized by the following technical scheme:
a rubber cast iron sleeper plate type vibration damping system comprises a steel rail, a fastener base plate, a sleeper and a railway bed, wherein the sleeper is a cast iron sleeper, and the fastener base plate and the cast iron sleeper are integrally formed; the bottom surface of the sleeper is symmetrically provided with rubber vibration damping pads, and the sleeper is provided with a rubber sheath which wraps the bottom of the rubber vibration damping pads and extends upwards to the side surface wrapping the sleeper; the ballast bed is arranged below the rubber sheath and consists of a self-compacting mortar cushion layer or a common reinforced concrete cushion layer; the self-compacting mortar cushion layer or the common reinforced concrete cushion layer is filled below the rubber sheath and around the side surface.
The fastener backing plate is made of the same material as the cast iron sleeper, and the fastener backing plate is provided with 1/40 rail base slopes.
The two ends of the cast iron sleeper are symmetrically arranged into a multi-frustum-prism shape.
The standard type of the cast iron sleeper has the length of 2200mm and the width of 500mm, and the thickness of the cast iron sleeper is 60mm, 100mm, 150mm or 200 mm.
The self-compacting mortar cushion layer is a high-fluidity high-performance self-compacting mortar cushion layer.
The high-fluidity high-performance self-compacting mortar cushion layer is self-compacting concrete or high-strength mortar; and the concrete is laid by adopting a field pouring or pouring mode.
The bottom of the middle part of the sleeper is provided with a drainage ditch, the bottom surfaces of two ends of the sleeper are symmetrically provided with rubber damping pads, and two ends of the sleeper are symmetrically provided with rubber sheaths which wrap the bottom of the rubber damping pads and extend upwards to the side surfaces wrapping the sleeper; the position of the drainage ditch is not provided with a rubber vibration damping pad and a rubber sheath; the rubber sheath is bonded with the cast iron sleeper.
The cast iron density was 7800kg/m 3.
ADVANTAGEOUS EFFECTS OF INVENTION
The density of the cast iron sleeper is 7800kg/m3, which is much higher than that of the reinforced concrete, 2500kg/m3, and the volume of the vibration participating mass can be greatly reduced under the same mass, so that the aim of greatly reducing the height of the track structure is fulfilled, and the requirement of track vibration reduction when the height of an existing vibration reduction track is modified and a newly-built vibration reduction track is limited is met; the iron backing plate of the fastener is made of the same material as the cast iron sleeper and is integrally formed with the sleeper, anchor bolts are not arranged, and the iron backing plate is provided with 1/40 rail bottom slopes, so that the construction difficulty is reduced, and the construction time is shortened; the rubber sheath is bonded with the cast iron sleeper, so that the buffer effect is provided; the rubber vibration damping pad of the invention provides a vibration damping effect; the self-compacting mortar cushion layer under the sleeper is paved by adopting the modes of on-site pouring or pouring and the like, can be used as an adjusting layer, increases the construction precision and simultaneously reduces the construction difficulty. The two ends of the cast iron sleeper are arranged into the frustum pyramid shape, so that a longitudinal and transverse limiting function is provided for the sleeper, and longitudinal and transverse movement of the steel rail is prevented, and the problem that the height of the track of a vibration reduction high-demand section of a newly-built project is limited is solved; in the reconstruction engineering, the system greatly reduces the breaking difficulty and the workload of the existing track reinforced concrete, and solves the problems of construction difficulty increase and cost increase caused by insufficient skylight time.
Description of the drawings:
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a plan view of the track structure of the present invention;
description of the figure numbering:
the steel rail comprises a steel rail 1, a fastener 2, a fastener base plate 3, a sleeper 4, a vibration damping pad 5, a rubber sheath 6, a self-compacting mortar cushion layer or common reinforced concrete cushion layer 7, a drainage ditch 8 and a foundation 9; the foundation 9 may be a civil structure;
the specific implementation mode is as follows:
referring to fig. 1-2, the rubber cast iron sleeper plate type damping system comprises a steel rail 1, a fastener 2, a fastener base plate 3, a sleeper 4 and a track bed, wherein the sleeper 4 is a cast iron sleeper, the density of cast iron is 7800kg/m3, and the fastener base plate 3 and the cast iron sleeper are integrally formed; the bottom surface of the sleeper 4 is symmetrically provided with rubber damping pads 5, and the sleeper 4 is provided with a rubber sheath 6 which wraps the bottom of the rubber damping pads 5 and extends upwards to the side surface wrapping the sleeper 4; the ballast bed is arranged below the rubber sheath 6 and consists of a self-compacting mortar cushion layer or a common reinforced concrete cushion layer 7; the self-compacting mortar cushion layer or the common reinforced concrete cushion layer is filled below the rubber sheath 6 and around the side surface.
The fastener base plate 3 is made of the same material as a cast iron sleeper, and the fastener base plate is provided with 1/40 rail base slopes.
The two ends of the cast iron sleeper are symmetrically arranged into a polygon terrace shape as shown in figure 3.
The standard type of the cast iron sleeper has the length of 2200mm and the width of 500mm, and the thickness of the cast iron sleeper is 60mm, 100mm, 150mm or 200 mm.
The self-compacting mortar cushion layer is a high-fluidity high-performance self-compacting mortar cushion layer.
The high-fluidity high-performance self-compacting mortar cushion layer is self-compacting concrete or high-strength mortar and is laid by adopting a field pouring or pouring mode.
When the bottom of the middle part of the sleeper 4 is a drainage ditch, the bottom surfaces of two ends of the sleeper 4 are symmetrically provided with rubber damping pads 5, and two ends of the sleeper 4 are symmetrically provided with rubber sheaths 6 which wrap the bottom of the rubber damping pads 5 and extend upwards to the side surfaces wrapping the sleeper 4; the rubber vibration damping pad 5 and the rubber sheath 6 are not arranged at the position of the drainage ditch; the rubber sheath 6 is connected with the cast iron sleeper in an adhesive way.
The self-compacting vibration-damping track comprises a system consisting of a fastener 2, a fastener base plate 3, a cast iron sleeper 4, a vibration-damping pad 5, a rubber sheath 6 and a self-compacting mortar cushion layer 7, and is suitable for the condition that the height of the existing vibration-damping track and the newly-built vibration-damping track is limited. According to the vibration theory, the mass of the track bed or the sleeper is increased, and enough inertia mass can be provided to offset the dynamic load generated by the vehicle, so that the dynamic load transmitted to the foundation structure and diffused is obviously reduced, and the aim of vibration reduction is fulfilled. The density of the cast iron is 7800kg/m3Much higher than 2500kg/m of reinforced concrete density3When the mass is the same, the volume of the cast iron is only one third of that of the reinforced concrete, so that the mass participating in vibration is greatly reducedThe volume of (a). When the heights of an existing damping track and a newly-built damping track are limited, the rubber cast iron sleeper plate type damping system can greatly reduce the height of a track structure, improve the damping effect, and reduce the vibration by 5-15 dB, wherein the damping effect is 5-15 dB, namely the damping effect is 5-15 Db which is 5-15 dB lower than that of a common track bed, and can reach 5-15 dB. Meanwhile, the workload of breaking the reinforced concrete of the existing track is reduced, and the method has remarkable effects of reducing construction difficulty and construction time.
In addition, the vibration reduction track system consisting of the cast iron sleeper 4, the rubber vibration reduction pad 5, the rubber sheath 6 and the self-compacting mortar cushion layer 7 greatly reduces the height of the track structure. The rubber vibration-damping pad has vibration-damping performance, the rubber sheath provides a buffer effect for the dynamic contact of the cast iron sleeper and the surrounding structure, and the self-compacting mortar cushion layer or concrete is used for connecting and supporting the cast iron sleeper and other structures.
The steel rail is generally 60kg/m, and other rail types can be selected according to the actual condition of the line; the fastener is matched with a steel rail for use, II-type w elastic strips are adopted, cast iron sleepers are 2200mm long and 500mm wide, standard thickness plates of 60mm, 100mm, 150mm and 200mm are arranged according to the damping requirement, and nonstandard thickness and nonstandard width can be selected according to the field condition; rubber damping pads 5 are respectively arranged at two ends of the cast iron sleeper 4, the bottom surfaces of the rubber damping pads 5 and three lateral surfaces of the sleeper are wrapped with rubber sheath 6, and the lateral surfaces can be glued to prevent falling off; the cast iron sleeper both ends set up to the terrace with edge shape and see figure 3, and high-performance self-compaction mortar class bed course 7 of high mobility is filled all around and below, adopt ordinary reinforced concrete when the condition allows, and this bed course adopts modes such as on-the-spot pouring or fills to lay, can regard as the adjustment layer, has reduced the construction degree of difficulty when increasing the construction precision, plays vertical and horizontal limit function to the wide sleeper.
The manufacturing cost of the rubber cast iron sleeper plate type damping system is slightly higher than that of a common reinforced concrete long sleeper, but the construction cost is greatly saved, the amount of broken concrete of the existing line is reduced, the problem that the height of a reserved track of a newly-built line is insufficient is solved, and the construction cost is greatly saved.
The construction steps are as follows: the construction is generally carried out by adopting a track panel method, and a steel rail, a fastener and a cast iron sleeper are installed into a whole and then erected. Then, the damping pad and the rubber sheath are wrapped at two ends of the cast iron sleeper, and the rubber sheath is adhered to the side edge of the sleeper and the damping pad and the bottom surface rubber sheath are not adhered to each other for facilitating construction and preventing sundries from entering between the sleeper and the rubber sheath. Finally, ordinary reinforced concrete can be used when the conditions for pouring the self-compacting mortar layer around the sleeper and on the bottom surface permit.
Claims (8)
1. A rubber cast iron sleeper plate type vibration damping system comprises a steel rail, a fastener base plate, a sleeper and a railway bed, and is characterized in that the sleeper (4) is a cast iron sleeper, and the fastener base plate (3) and the cast iron sleeper are integrally formed; the bottom surface of the sleeper (4) is provided with a rubber damping pad (5), and the sleeper (4) is provided with a rubber sheath (6) which wraps the bottom of the rubber damping pad (5) and extends upwards to the side surface wrapping the sleeper (4); the ballast bed is arranged below the rubber sheath (6) and consists of a self-compacting mortar cushion layer or a common reinforced concrete cushion layer (7); the self-compacting mortar cushion layer or the common reinforced concrete cushion layer is filled below the rubber sheath (6) and around the side surface.
2. A rubber cast iron tie plate damping system as claimed in claim 1, characterized in that the said fastener tie plate (3) is of the same material as the cast iron tie, said fastener tie plate being provided with 1/40 rail foot slopes.
3. A rubber cast iron sleeper plate type vibration damping system as defined in claim 1 wherein both ends of said cast iron sleeper are symmetrically arranged in a shape of a polygon terrace.
4. A rubber cast iron tie plate damping system as claimed in claim 1 wherein said standard cast iron tie pattern is 2200mm long and 500mm wide and said cast iron tie is 60mm, 100mm, 150mm or 200mm thick.
5. A rubber cast iron tie plate type damping system as claimed in claim 1 wherein said self-compacting mortar-type pad is a high flow high performance self-compacting mortar-type pad.
6. A slab-type damping system for rubber-cast iron sleepers as claimed in claim 5, in which the high-fluidity high-performance self-compacting mortar-type cushion is self-compacting concrete or high-strength mortar, and is applied by casting or pouring on site.
7. A rubber cast iron sleeper slab type damping system as claimed in claim 1, characterized in that the bottom of the middle part of the sleeper (4) is a drainage ditch, the bottom surfaces of the two ends of the sleeper (4) are symmetrically provided with rubber damping pads (5), and the two ends of the sleeper (4) are symmetrically provided with rubber sheaths (6) which wrap the bottom of the rubber damping pads (5) and extend upwards to the side surfaces wrapping the sleeper (4); the position of the drainage ditch is not provided with a rubber vibration damping pad (5) and a rubber sheath (6); the rubber sheath (6) is bonded with the cast iron sleeper.
8. A rubber cast iron tie plate damping system as claimed in claim 1 wherein said cast iron density is 7800kg/m 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793573.XA CN111851166A (en) | 2020-08-10 | 2020-08-10 | Rubber cast iron sleeper plate type vibration damping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793573.XA CN111851166A (en) | 2020-08-10 | 2020-08-10 | Rubber cast iron sleeper plate type vibration damping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111851166A true CN111851166A (en) | 2020-10-30 |
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ID=72971744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010793573.XA Pending CN111851166A (en) | 2020-08-10 | 2020-08-10 | Rubber cast iron sleeper plate type vibration damping system |
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| Country | Link |
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| CN (1) | CN111851166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024198587A1 (en) * | 2023-03-29 | 2024-10-03 | 浙江天铁实业股份有限公司 | Boot for sleeper, and track system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988003973A1 (en) * | 1986-11-17 | 1988-06-02 | Attività Industriali Triestine S.P.A. | Cast iron sleeper with built-in rail anchors |
| CN102605684A (en) * | 2012-04-18 | 2012-07-25 | 北京市市政工程设计研究总院 | Low assembly type monolithic roadbed with elastic short sleeper and construction method thereof |
| CN106702829A (en) * | 2016-12-09 | 2017-05-24 | 中铁二院工程集团有限责任公司 | Open-type elastic shorter tie vibration damping track structure |
| CN109811595A (en) * | 2019-03-26 | 2019-05-28 | 北京市市政工程设计研究总院有限公司 | One kind can spell bomb disposal concrete sleeper and construction method |
| CN212505653U (en) * | 2020-08-10 | 2021-02-09 | 北京市市政工程设计研究总院有限公司 | Rubber cast iron sleeper plate type vibration damping system |
-
2020
- 2020-08-10 CN CN202010793573.XA patent/CN111851166A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988003973A1 (en) * | 1986-11-17 | 1988-06-02 | Attività Industriali Triestine S.P.A. | Cast iron sleeper with built-in rail anchors |
| CN102605684A (en) * | 2012-04-18 | 2012-07-25 | 北京市市政工程设计研究总院 | Low assembly type monolithic roadbed with elastic short sleeper and construction method thereof |
| CN106702829A (en) * | 2016-12-09 | 2017-05-24 | 中铁二院工程集团有限责任公司 | Open-type elastic shorter tie vibration damping track structure |
| CN109811595A (en) * | 2019-03-26 | 2019-05-28 | 北京市市政工程设计研究总院有限公司 | One kind can spell bomb disposal concrete sleeper and construction method |
| CN212505653U (en) * | 2020-08-10 | 2021-02-09 | 北京市市政工程设计研究总院有限公司 | Rubber cast iron sleeper plate type vibration damping system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024198587A1 (en) * | 2023-03-29 | 2024-10-03 | 浙江天铁实业股份有限公司 | Boot for sleeper, and track system |
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