CN107503246B - Piston type particle damping energy-consumption vibration reduction railway ballast - Google Patents
Piston type particle damping energy-consumption vibration reduction railway ballast Download PDFInfo
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- CN107503246B CN107503246B CN201710655759.7A CN201710655759A CN107503246B CN 107503246 B CN107503246 B CN 107503246B CN 201710655759 A CN201710655759 A CN 201710655759A CN 107503246 B CN107503246 B CN 107503246B
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- piston type
- type particle
- particle damping
- concrete block
- damping
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- 238000013016 damping Methods 0.000 title claims abstract description 102
- 239000002245 particle Substances 0.000 title claims abstract description 98
- 230000009467 reduction Effects 0.000 title claims abstract description 27
- 238000005265 energy consumption Methods 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000011398 Portland cement Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 230000007704 transition Effects 0.000 abstract description 21
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 230000003993 interaction Effects 0.000 abstract description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008846 dynamic interplay Effects 0.000 description 1
- FGBJXOREULPLGL-UHFFFAOYSA-N ethyl cyanoacrylate Chemical compound CCOC(=O)C(=C)C#N FGBJXOREULPLGL-UHFFFAOYSA-N 0.000 description 1
- 229940053009 ethyl cyanoacrylate Drugs 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E01B19/003—Means for reducing the development or propagation of noise
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Dampers (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a piston type particle damping energy-consumption vibration-reduction railway ballast, which comprises a concrete block and a piston type particle damping element embedded in the concrete block; the piston type particle damping element comprises a shell, wherein damping particles and metal balls are arranged in the shell; the metal balls are fixedly connected with the concrete blocks through metal wires. The invention has the advantages that the piston type particle damping energy-consumption vibration reduction railway ballast is applied to the transition section of the track, the dynamic characteristic of the transition section can be effectively improved, the dynamic load transferred to the roadbed by the railway ballast can be effectively reduced, the settlement of the roadbed is reduced, the interaction between the railway and the vehicle is not obviously changed when the railway passes through the transition section at high speed, and the deterioration of the state of the line is not accelerated; in addition, the piston type particle damping energy-consumption vibration-reduction railway ballast does not influence the tamping and screening of the normal line maintenance.
Description
Technical Field
The invention belongs to the technical field of rail transit, and particularly relates to a piston type particle damping energy-consumption vibration reduction railway ballast.
Background
The development of the rail transit field of China, especially the development of high-speed railways, has been rapid since the twenty-first century. In the process of continuously constructing high-speed railways and in order to meet the requirement of large speed acceleration of railways, the problems of the transition sections of railway lines (the transition of roadbeds and bridges and the transition of roadbeds and tunnels) are highlighted, and are paid attention to construction and design units. The suitability of the problem treatment of the transition section determines the operation speed of the high-speed railway and the comfort level of passengers to a certain extent.
The main problems of the transition section are represented by geometrical irregularities and stiffness irregularities of the track. The traditional transition section processing method comprises a roadbed processing method and a track processing method. The roadbed treatment method comprises the following steps: reinforced soil method for filling soil after the platform, filling high-quality materials such as broken stone, high use strength and filling high-quality materials with small deformation (such as low-strength grade concrete). The track treatment method comprises the following steps: and the vertical rigidity of the track is increased at the softer side of the transition section, the vertical rigidity of the track is reduced at the harder side of the transition section, and the auxiliary rail is arranged to improve the rigidity of the track structure frame. These treatments have their own applicability and drawbacks, such as the potential risk of subgrade damage during operation. Meanwhile, due to the construction between the bridge abutment and the roadbed at the transition section of the road bridge, the roadbed at the transition section cannot be fully compacted, so that the transition section is more prone to sedimentation. And the special geological condition of China does not have a large amount of high-quality roadbed filling materials, and the difficulty is brought to the traditional treatment method.
Disclosure of Invention
According to the defects of the prior art, the invention provides the piston type particle damping energy-consumption vibration-reduction railway ballast, which effectively improves the damping of the railway ballast by embedding the piston type particle damping element in the railway ballast, thereby achieving the purpose of improving the dynamic characteristics of a transition section.
The invention is realized by the following technical scheme:
the piston type particle damping energy-consumption vibration reduction railway ballast comprises a concrete block and a piston type particle damping element embedded in the concrete block; the piston type particle damping element comprises a shell, wherein damping particles and metal balls are arranged in the shell; the metal balls are fixedly connected with the concrete blocks through metal wires.
The two sides of the metal ball are respectively fixedly connected with one metal wire, and the two metal wires respectively penetrate through two opposite side walls of the shell and extend into the concrete block.
The part of the metal wire fixedly connected with the inside of the concrete block is spiral.
The shell is hexahedral, and the side length of the shell is 1.3-1.5 cm.
The damping particles are made of any one or a combination of a plurality of tungsten powder, lead powder, copper powder and iron powder; the particle size of the damping particles is 0.001-0.5 mm; the filling rate of the damping particles in the shell is 50-90%.
The particle size of the damping particles, the filling rate of the damping particles and the material density of the damping particles are all in direct proportion to the vibration amplitude of the concrete block in the working process.
The diameter of the metal ball is 4.5-5.5 mm.
The concrete block is a regular tetrahedron; and the sharp corners of the concrete blocks are subjected to fillet treatment.
The volume ratio of cement to sand in the concrete block is 1:1, and the cement is Portland cement with the strength grade of 52.5.
The concrete block is internally buried with a metal framework, and the shell is adhered to the metal framework.
The piston type particle damping energy-consumption vibration reduction ballast has the advantages that the piston type particle damping energy-consumption vibration reduction ballast has larger damping and better vibration reduction effect; the piston type particle damping energy-consumption vibration reduction railway ballast is applied to the transition section of the track, so that the dynamic characteristic of the transition section can be effectively improved, the dynamic load transferred to the roadbed by the railway ballast can be effectively reduced, the settlement of the roadbed is reduced, the interaction between the railway and the railway is not obviously changed when the railway passes through the transition section at high speed, and the deterioration of the state of the railway is not accelerated; in addition, the piston type particle damping energy-consumption vibration reduction railway ballast does not influence tamping and screening of normal line maintenance.
Drawings
FIG. 1 is a perspective view of a piston type particle damping energy-consuming vibration attenuation ballast in the present invention;
FIG. 2 is a schematic representation of the distribution of piston-type particulate damping elements in a concrete block according to the present invention;
FIG. 3 is a schematic diagram of a piston type particulate damping element according to the present invention;
fig. 4 is a schematic structural view of a metal skeleton according to the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
as shown in fig. 1-4, reference numerals 1-8 are respectively: the energy-consuming vibration-damping piston type particle damping ballast comprises a piston type particle damping energy-consuming vibration-damping ballast 1, a concrete block 2, a piston type particle damping element 3, a shell 4, damping particles 5, metal balls 6, metal wires 7 and a metal framework 8.
Examples: as shown in fig. 1 and 2, the present embodiment relates to a piston type particle damping energy-dissipation vibration-reduction ballast 1, where the piston type particle damping energy-dissipation vibration-reduction ballast 1 includes a concrete block 2 and a piston type particle damping element 3 embedded in the concrete block 2.
As shown in fig. 1 and 2, the concrete block 2 of the present embodiment is a regular tetrahedron, and the side length thereof is 6cm; in order to avoid hardening of railway ballast caused by crushing of concrete at sharp corners of the concrete blocks 2 in the use process, the sharp corners of the concrete blocks 2 need to be subjected to fillet treatment; in the chamfering process, carrying out fillet treatment on concrete in a region 1cm away from the sharp point of the concrete block 2; the straight line length of each side of the concrete block after treatment is 4cm; the volume ratio of cement to sand in the concrete block 2 is 1:1; the cement used for the concrete block 2 was Portland cement with a strength grade of 52.5.
As shown in fig. 2 and 3, the piston type particle damping element 3 embedded in the concrete block 2 is mainly used for absorbing vibration energy of the piston type particle damping energy-dissipation vibration reduction ballast 1 in the working process; the piston type particle damping element 3 comprises a shell 4, wherein damping particles 5 and metal balls 6 are arranged inside the shell 4; the metal ball 6 is fixedly connected with the concrete block 2 through a metal wire 7; in this embodiment, two sides of the metal ball 6 are respectively and fixedly connected with a metal wire 7, the two metal wires 7 respectively penetrate through two opposite side walls of the shell 4 and extend to the concrete inside of the concrete block 2 to be solidified, and through holes for the metal wires 7 to penetrate through are formed in the side walls of the shell 4.
As shown in fig. 1 to 3, the piston type particle damping element 3 is a passive vibration control technique; when the piston type particle damping energy-consumption vibration reduction railway ballast 1 is in a working state, the vibration of the piston type particle damping energy-consumption vibration reduction railway ballast 1 is transmitted to the piston type particle damping element 3 through the concrete block 2, so that damping particles 5 in the piston type particle damping element 3 vibrate; simultaneously, the concrete block 2 pulls the metal balls 6 in the piston type particle damping element 3 through the metal wires 7, so that the metal balls 6 vibrate; during the vibration of the metal balls 6 and the damping particles 5, the damping particles 5 collide and rub with the metal balls 6, and the damping particles 5 collide and rub with each other; the collision and friction consume vibration energy and convert the vibration energy into heat, so that the effect of dissipating the vibration energy is realized; the piston type particle damping element 3 is buried in the concrete block 2, so that the damping and vibration energy dissipation capacity of the piston type particle damping energy dissipation vibration reduction railway ballast 1 can be effectively enhanced.
As shown in fig. 3, in the present embodiment, the housing 4 of the piston-type particle damping element 3 is a regular hexahedral body made of a Q195 steel sheet with a thickness of 2mm, and has a side length of 1.3-1.5 cm; the splice of the thin steel plates of the shell 4 is formed by adhering metal adhesive with ethyl cyanoacrylate as a main raw material.
As shown in fig. 1 and 3, in this embodiment, the damping particles 5 are made of any one or more of tungsten powder, lead powder, copper powder and iron powder, and the overall density of the damping particles 5 can be adjusted by adjusting the proportion of the damping particles 5 made of various materials; the particle size of the damping particles 5 is 0.001mm to 0.5mm; the filling rate of the damping particles 5 inside the shell 4 is between 50% and 90%; in order to achieve a better vibration reduction effect, the particle size of the damping particles 5, the filling rate of the damping particles 5 in the shell 4 and the material density of the damping particles 5 are proportional to the vibration amplitude of the piston type particle damping energy-dissipation vibration reduction ballast 1 in the working process.
As shown in fig. 2 and 3, in the present embodiment, the diameter of the through hole in the side wall of the housing 4 through which the wire 7 passes is 1mm; the metal wire 7 is a thin iron wire with the diameter of 0.3mm, and the metal wire 7 is connected with the metal ball 6 in a welding mode; the metal ball 6 is a small iron ball with the diameter of 4.5mm to 5.5mm, and the larger the diameter of the metal ball 6 is, the better the vibration reduction effect is; for the convenience of production, each metal ball 6 can be a small iron ball with the same diameter; the ends of the wires 7 extend through the housing 4 into the concrete interior of the concrete block 2 and are consolidated with the concrete; in this embodiment, the portion where the wire 7 is fixed to the concrete is in a spiral shape, which makes the connection between the wire 7 and the concrete block 2 more stable, and further makes the wire 7 not to be separated from the concrete of the concrete block 2 during vibration.
As shown in fig. 2 and 4, in this embodiment, a metal skeleton 8 is provided inside the concrete block 2; the metal framework 8 is made of thin iron wires with the diameter of 2 mm; the area surrounded by the metal framework 8 is a regular tetrahedron, and four corners of the metal framework 8 are respectively bonded with a piston type particle damping element 3; in this embodiment, the metal skeleton 8 serves only as a finished structure of the piston-type particulate damping element 3, and not as a force-receiving member inside the concrete mass 2; the metal skeleton 8 has a side length of 4cm, which may be dimensioned to provide a protective layer for the piston-type particle damping element 3.
The production process of the piston type particle damping energy-dissipation vibration reduction railway ballast 1 specifically comprises the following steps:
1) According to the shape of the concrete block 2 shown in fig. 1, an equilateral tetrahedron form with rounded corners and 6cm sides is made and placed on the floor of a factory;
2) As shown in fig. 4, the piston type particle damping element 3 and the metal skeleton 8 are manufactured, and the piston type particle damping element 3 is bonded to a designated position of the metal skeleton 8 through metal glue;
3) As shown in fig. 2 and 4, the metal framework 8 bonded with the piston type particle damping element 3 is put into a template, and mortar is poured into the template; the volume ratio of cement to sand in the mortar is 1:1; the cement adopts Portland cement with the strength grade of 52.5; curing after compacting by vibrating, demoulding after 28 days, and finishing the production of the piston type particle damping energy-consuming vibration-reducing railway ballast 1.
As shown in fig. 1 and 2, in the application process, the piston type particle damping energy-dissipation vibration reduction ballast 1 of the embodiment can be used for replacing stone ballasts in the prior art; the piston type particle damping energy-dissipation vibration reduction ballast 1 is embedded with the piston type particle damping element 3, and the piston type particle damping element 3 can effectively dissipate vibration energy of the piston type particle damping energy-dissipation vibration reduction ballast 1 in the working process, which is equivalent to improving damping of the piston type particle damping energy-dissipation vibration reduction ballast 1.
Compared with the stone ballast in the prior art, the piston type particle damping energy-dissipation vibration reduction ballast has larger damping and better vibration reduction effect; the piston type particle damping energy-consumption vibration reduction railway ballast is applied to the transition section of the track, so that the dynamic characteristic of the transition section can be effectively improved, the dynamic load transferred to the roadbed by the railway ballast can be effectively reduced, the settlement of the roadbed is reduced, the mutual dynamic interaction between a vehicle and a line is not obviously changed when the train passes through the transition section at a high speed, and the state of the line is not accelerated; in addition, the piston type particle damping energy-consumption vibration reduction railway ballast of the embodiment does not influence tamping and screening of normal line maintenance.
Claims (7)
1. A piston type particle damping energy-consumption vibration attenuation railway ballast is characterized in that: the piston type particle damping energy-consumption vibration reduction railway ballast comprises a concrete block and a piston type particle damping element embedded in the concrete block; the piston type particle damping element comprises a shell, wherein damping particles and metal balls are arranged in the shell; the metal balls are fixedly connected with the concrete blocks through metal wires;
the two sides of the metal ball are respectively fixedly connected with one metal wire, and the two metal wires respectively penetrate through two opposite side walls of the shell and extend into the concrete block; the shell is hexahedral, and the side length of the shell is 1.3-1.5 cm; the damping particles are made of any one or a combination of a plurality of tungsten powder, lead powder, copper powder and iron powder; the particle size of the damping particles is 0.001-0.5 mm; the filling rate of the damping particles in the shell is 50-90%.
2. The piston type particle damping energy-consuming vibration attenuation ballast according to claim 1, wherein: the part of the metal wire fixedly connected with the inside of the concrete block is spiral.
3. The piston type particle damping energy-consuming vibration attenuation ballast according to claim 1, wherein: the particle size of the damping particles, the filling rate of the damping particles and the material density of the damping particles are all in direct proportion to the vibration amplitude of the concrete block in the working process.
4. The piston type particle damping energy-consuming vibration attenuation ballast according to claim 1, wherein: the diameter of the metal ball is 4.5-5.5 mm.
5. The piston type particle damping energy-consuming vibration attenuation ballast according to claim 1, wherein: the concrete block is a regular tetrahedron; and the sharp corners of the concrete blocks are subjected to fillet treatment.
6. The piston type particle damping energy-consuming vibration attenuation ballast according to claim 1 or 5, wherein: the volume ratio of cement to sand in the concrete block is 1:1, and the cement is Portland cement with the strength grade of 52.5.
7. The piston type particle damping energy-consuming vibration attenuation ballast according to claim 1, wherein: the concrete block is internally buried with a metal framework, and the shell is adhered to the metal framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710655759.7A CN107503246B (en) | 2017-08-03 | 2017-08-03 | Piston type particle damping energy-consumption vibration reduction railway ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710655759.7A CN107503246B (en) | 2017-08-03 | 2017-08-03 | Piston type particle damping energy-consumption vibration reduction railway ballast |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107503246A CN107503246A (en) | 2017-12-22 |
| CN107503246B true CN107503246B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710655759.7A Active CN107503246B (en) | 2017-08-03 | 2017-08-03 | Piston type particle damping energy-consumption vibration reduction railway ballast |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409231A (en) * | 2018-03-12 | 2018-08-17 | 武汉理工大学 | The high spin system material of built-in empty bead based on particle damping principle |
| CN111005974A (en) * | 2019-02-28 | 2020-04-14 | 厦门嘉达声学技术有限公司 | Vibration isolation pedestal of pressure stabilizing pump set |
| CN110337214A (en) * | 2019-05-09 | 2019-10-15 | 厦门大学 | Oscillation damping method, electronic equipment and printed circuit board based on particle damper |
| CN113106789B (en) * | 2021-03-09 | 2022-04-29 | 厦门大学 | Vibration reduction method based on particle damping and vibration reduction sleeper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002227101A (en) * | 2001-02-06 | 2002-08-14 | Odakyu Dentetsu Kk | Sleeper-integrated concrete ballast structure for railway line |
| KR20150044184A (en) * | 2013-10-16 | 2015-04-24 | 우송대학교 산학협력단 | Method of Gravel ballast Fence recycling Pre-Stress Concrete Sleeper |
| CN105239692A (en) * | 2015-10-26 | 2016-01-13 | 同济大学 | Non-linear rail type particle damper |
| CN106012708A (en) * | 2016-06-22 | 2016-10-12 | 株洲时代新材料科技股份有限公司 | Vibration reducing particles, mixed rail transportation foundation soil and vibration reducing method for rail transportation foundation |
| CN207017080U (en) * | 2017-08-03 | 2018-02-16 | 华东交通大学 | A kind of piston type particle damping energy dissipation vibration damping railway ballast |
-
2017
- 2017-08-03 CN CN201710655759.7A patent/CN107503246B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002227101A (en) * | 2001-02-06 | 2002-08-14 | Odakyu Dentetsu Kk | Sleeper-integrated concrete ballast structure for railway line |
| KR20150044184A (en) * | 2013-10-16 | 2015-04-24 | 우송대학교 산학협력단 | Method of Gravel ballast Fence recycling Pre-Stress Concrete Sleeper |
| CN105239692A (en) * | 2015-10-26 | 2016-01-13 | 同济大学 | Non-linear rail type particle damper |
| CN106012708A (en) * | 2016-06-22 | 2016-10-12 | 株洲时代新材料科技股份有限公司 | Vibration reducing particles, mixed rail transportation foundation soil and vibration reducing method for rail transportation foundation |
| CN207017080U (en) * | 2017-08-03 | 2018-02-16 | 华东交通大学 | A kind of piston type particle damping energy dissipation vibration damping railway ballast |
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