CN111103118A - Railway ballast wind tunnel test platform that splashes - Google Patents
Railway ballast wind tunnel test platform that splashes Download PDFInfo
- Publication number
- CN111103118A CN111103118A CN202010032445.3A CN202010032445A CN111103118A CN 111103118 A CN111103118 A CN 111103118A CN 202010032445 A CN202010032445 A CN 202010032445A CN 111103118 A CN111103118 A CN 111103118A
- Authority
- CN
- China
- Prior art keywords
- model
- ballast
- railway
- railway ballast
- sleeper
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The embodiment of the invention provides a ballast splashing wind tunnel test platform, which comprises: the device comprises a railway ballast splashing test bed, a test bed bracket, a high-speed train carriage bottom structure model, a sleeper model, a steel rail model, a ballast shoulder model, railway ballast aggregate and wind speed testing device; the railway ballast splashing test bed is connected and fixed with a bottom structure model of a carriage of a high-speed train and a wind tunnel laboratory floor through a test bed support respectively, the height of the test bed support can be adjusted, a railway ballast aggregate surface layer is arranged in a sleeper model, railway ballast aggregate is arranged on the surface of the railway ballast splashing test bed, a steel rail model is fixed on the top surface of a railway sleeper model rail bearing groove, a railway ballast shoulder model is fixed on two sides of the sleeper model and the railway ballast aggregate, and a wind speed testing device is fixed on the railway ballast aggregate surface layer between the sleeper models. The method can accurately simulate the occurrence conditions of the high-speed railway ballast splashing, reduce the occurrence and development characteristics of the ballast splashing, monitor the data of the ballast splashing flow field in real time, and is convenient and fast to operate.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a ballast splashing wind tunnel test platform.
Background
The high-speed railway is an important component of a modern transportation system, and the track is an important component of the high-speed railway and plays an indispensable role in ensuring the safe and stable running of the train. The ballast track has remarkable advantages in applicability, flexibility, economy and maintainability, and is one of main track structure forms of a high-speed railway. In the high-speed railway lines which are opened and operated in China, almost all high-speed railways formed by transforming existing lines adopt ballast tracks, the high-speed railways in a section with the operation speed of 250km/h in newly-built lines mainly adopt the ballast tracks, part sections of the high-speed railway lines with the operation speed of 300km/h and above also adopt the ballast tracks, and especially special sections such as long and large bridges, elevated stations, geological fracture zones and the like have to adopt ballast track structures.
In recent years, with the gradual increase of the running speed of trains, the phenomenon that railway ballast particles fly off a railway bed on a high-speed railway line and hit tracks, vehicles and facilities around the line are splashed frequently occurs. The damage to the structure of the track and the train is caused, the maintenance and repair cost of the line and the vehicle is greatly increased, and the driving safety is seriously threatened. If the splashed railway ballast is scattered on the tread of the steel rail, the steel rail and wheels can be damaged under the action of the force of the wheel rail, the rail deterioration and the wheel flat scar are accelerated, the stress of the wheel rail is changed, and even accidents such as derailment and the like can be caused in severe cases; if parts such as a train bogie, a brake cylinder, a train body and the like are hit, the train is damaged, and unsafe factors and the maintenance cost of the train are increased; certain harm can be caused to facilities around the line, and even personal injury can be caused; in addition, flying ballast and dust can cause environmental pollution and affect the appearance.
The uncertainty of the high-speed railway ballast splashing is obvious, the motion rule and the track flow field characteristics of the splashing railway ballast can be intuitively obtained by adopting a field test method, but the limitation is larger when the problem of the ballast splashing with obvious randomness is researched due to the fact that the field test has more interference factors, excessively depends on the existing line conditions, has weak repeatability, high research cost and the like. The wind tunnel test method is adopted to restore the original ballast track structure flow field, observe and test the movement behavior of the ballast particles and the track flow field characteristics under the action of wind load, and can effectively overcome the problems.
Therefore, how to design a test platform capable of truly reducing the high-speed railway ballast splashing wind tunnel is an urgent problem to be solved by technical personnel in the field. By means of reduction analysis of the development mechanism of the ballast splash, scientific and effective ballast splash prevention and control suggestions are provided, so that safe operation of a high-speed train is guaranteed, and line maintenance cost is reduced.
Disclosure of Invention
The embodiment of the invention provides a railway ballast splashing wind tunnel test platform, which overcomes the defects that in the existing railway ballast splashing reduction analysis, the reduction precision of the flow field characteristics of a ballast track is limited, the influence of the structural parameters of the ballast track on the railway ballast splashing cannot be considered, the movement behavior of the railway ballast splashing cannot be observed in a refined manner, and the flow field characteristics of the track structure in the railway ballast splashing generation and development process cannot be observed.
In order to achieve the purpose, the invention adopts the following technical scheme.
A railway ballast wind tunnel test platform that splashes includes: the device comprises a railway ballast splashing test bed, a test bed bracket, a high-speed train carriage bottom structure model, a sleeper model, a steel rail model, a ballast shoulder model, railway ballast aggregate and wind speed testing device;
the railway ballast splash test bed is characterized in that the railway ballast splash test bed passes through the test bed support and is respectively connected and fixed with a high-speed train carriage bottom structure model and a wind tunnel laboratory floor, the height of the test bed support is adjustable, the sleeper model is arranged in the railway ballast aggregate surface layer, the railway ballast aggregate is arranged in the railway ballast splash test bed surface, the steel rail model is fixed on the top surface of a railway sleeper model rail bearing groove, the railway ballast shoulder model is fixed on the sleeper model and the railway ballast aggregate two sides, and the wind speed testing device is fixed on the railway ballast aggregate surface layer between the sleeper models.
Preferably, the platform further comprises: and the protective net is fixed at one end of the railway ballast splashing test bed, which is positioned at the outlet of the wind tunnel.
Preferably, the protective net is formed by a wire netting fixed on the inner side of a wood frame, the side length of each grid is smaller than the average grain size of the ballast particles, and the length of the wood frame is the same as the width of the ballast splashing test bed.
Preferably, the platform further comprises: and the video acquisition device is positioned right above the middle part of the railway ballast splashing test bed and is used for acquiring and recording the displacement characteristics of the railway ballast sample in the test.
Preferably, the test bed support is of a double-layer angle steel structure, a series of round holes are formed in the surface of the angle steel, the anchor rod penetrates through the round holes, the double-layer angle steel is fixedly connected, and the height of the test bed support is adjusted.
Preferably, the structural model of the bottom of the high-speed train carriage is made of toughened glass materials.
Preferably, the number of the sleeper models is multiple, the transverse distance between the centers of the sleeper models is adjustable, and the surface of each sleeper model is provided with a wind pressure measuring point.
Preferably, the ballast shoulder model is fixed on two sides of the ballast aggregate and the sleeper model, the gradient of the ballast shoulder model is 1:1.75, the pile height can be adjusted to be 0cm, 5cm, 10cm or 15cm, and a wind pressure measuring point is arranged on the surface of the ballast shoulder model.
Preferably, the steel rail model is made of iron sheet, holes are formed in the bottoms of the front end and the rear end of the steel rail model, the steel rail model and the sleeper model are fixedly connected through anchor rods, and the shape of the steel rail model is completely consistent with that of the section of the high-speed railway steel rail.
Preferably, the wind speed testing device is located between the middle two-span sleeper model and comprises: the wind speed testing device comprises a wind speed testing device support and a series of wind speed testing probes at different transverse and longitudinal positions, wherein the probes are mounted on the wind speed testing device support and can test the wind speed of a point measured in the horizontal direction and the vertical direction at the same time, the wind speed testing device support is arranged inside a ballast bed, and the transverse and longitudinal positions of the wind speed testing device support can be adjusted.
According to the technical scheme provided by the embodiment of the invention, the ballast splashing wind tunnel test platform provided by the embodiment of the invention can accurately simulate the generation condition of the ballast splashing of the high-speed railway, reduce the generation and development characteristics of the ballast splashing, monitor the data of the ballast splashing flow field in real time and is convenient and fast to operate. Compared with the prior art, the invention also has the following advantages:
(1) the railway ballast splashing wind tunnel test platform is specially used for simulating and analyzing the railway ballast splashing of the high-speed railway, and can accurately reduce the generation and development processes of the railway ballast splashing of the high-speed railway and test the flow field characteristics of the railway ballast splashing by accurately simulating the appearance characteristics of the railway bed, the ballast shoulder, the sleeper, the steel rail and the bottom of the carriage of a railway ballast track line.
(2) According to the invention, by increasing or reducing the number of the ballast aggregates between the sleeper models, adjusting parameters such as shape and material of the ballast aggregates between the sleeper boxes, height of ballast shoulder piles of the ballast shoulder models, height of the bottom model of the carriage and the top surface of the ballast splash test bed and the like, the generation and development states of the ballast splash can be simulated under the condition of different track bed parameters.
(3) According to the invention, by adjusting the wind speed testing device and the wind pressure measuring points on the surfaces of the sleeper model and the ballast shoulder model, the wind speed strength and the distribution characteristics at different transverse and longitudinal positions of the surface of the railway bed model and the wind pressure strength and the distribution characteristics in different areas of the surfaces of the sleeper model and the ballast shoulder model can be synchronously tested, and the generation and development mechanism of the ballast splash is obtained.
(4) According to the invention, the video acquisition device positioned above the railway ballast splashing test bed can acquire the railway ballast splashing motion behavior in the test in real time, so that the threat of the railway ballast splashing to the testing personnel is avoided, and the safety and the accuracy of the test are improved.
(5) The railway ballast splashing wind tunnel test platform is simple in structure, simple and convenient to assemble and disassemble, easy to operate and relatively low in test cost.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a ballast splashing wind tunnel test platform provided by an embodiment of the invention;
fig. 2 is a schematic front view of a ballast splashing wind tunnel test platform provided by the embodiment of the invention;
fig. 3 is a schematic top view of a ballast splashing wind tunnel test platform provided by an embodiment of the invention.
Reference numerals:
1-a railway ballast splashing test bed; 2-a test stand support; 3-a structural model of the bottom of the carriage of the high-speed train; 4-sleeper model; 5-steel rail model; 6-ballast shoulder model; 7-wind tunnel laboratory boundaries; 8-ballast aggregate; 9-wind speed testing device; 10-protective screening; 11-video capture device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The embodiment of the invention provides a ballast splashing wind tunnel test platform, which is used for truly simulating the generation and development process of ballast splashing and the surface flow field characteristics of a ballast track structure, and comprises the following components as shown in figures 1-3: the device comprises a railway ballast splashing test bed 1, a test bed support 2, a high-speed train carriage bottom structure model 3, a sleeper model 4, a steel rail model 5, a ballast shoulder model 6, a wind tunnel laboratory boundary 7, railway ballast aggregate 8, a wind speed testing device 9, a protective net 10 and a video acquisition device 11.
The railway ballast splashing test bed 1 is respectively connected and fixed with a high-speed train carriage bottom structure model 3 and a wind tunnel laboratory floor through a test bed bracket 2. The test bed support 2 is of a double-layer angle steel structure, a series of round holes with the interval of 0.02m are formed in the surface of the angle steel, and an anchor rod is adopted to penetrate through the round holes to connect and fix the double-layer angle steel and realize the height adjustment of the test bed support. The height adjustable mode of the test bed support 2 can realize the height adjustment of the test bed and eliminate the influence of a laboratory boundary layer under different incoming flow wind speeds in a wind tunnel test. Meanwhile, by adjusting the height of the support between the railway ballast splashing test bed 1 and the high-speed train carriage bottom structure model 3, the generation and development rules of railway ballast splashing on the surface of a railway ballast track and the flow field data change characteristics of the railway ballast track can be simulated under the condition of different carriage bottom heights.
The shape and the size of the structural model 3 at the bottom of the high-speed train compartment are the same as those of the CRH3 motor train unit intermediate car. Adopt toughened glass material preparation, on the basis of guaranteeing carriage bottom structure model intensity, can reduce the model quality, convenient to detach, simple operation, when reducing test cost, higher to the guarantee of testing personnel security. Meanwhile, the toughened glass is made of transparent material, so that the splashing motion state of the railway ballast in the test process can be clearly observed.
The sleeper model 4 is arranged on the surface of the railway ballast aggregate 8, the shape and the size of the sleeper model 4 are completely the same as the appearance and the size of a ballast track III type concrete sleeper of a high-speed railway, the length is 2.6m, the bottom surface width is 0.32m, the highest height is 0.26m, 4 spans the sleeper model 4 in total, the central transverse distance of each sleeper model is set to be 0.6m (the distance between the central transverse distance and the bottom surface can be adjusted), 102 wind pressure measuring points are arranged on the surface of each span of the sleeper model 4 in total, wherein the top surface is 28, the side surface is 37, and therefore synchronous testing of flow field data of different areas on the sleeper surface can be.
The steel rail model 5 is fixed on the top surface of a rail bearing groove of the sleeper model 4, the steel rail model 5 is made of iron sheet materials, holes are formed in the bottoms of the front end and the rear end of the steel rail model 5, the steel rail model 5 and the sleeper model 4 are fixedly connected through anchor rods, and the shape of the steel rail model 5 is completely consistent with the shape of the section of a 60kg/m steel rail of a high-speed railway.
The ballast shoulder model 6 is fixed on two sides of the sleeper model 4 and the railway ballast aggregate 8, the slope of the ballast shoulder model 6 is 1:1.75, the height of the pile can be adjusted to be 0cm, 5cm, 10cm or 15cm, 84 wind pressure measuring points are arranged on the surface of the ballast shoulder model 6, wherein the number of the inner sides of the railway beds is 56, and the number of the outer sides of the railway beds is 28.
The method comprises the steps of placing railway ballast aggregate 8 on the surface of a railway ballast splashing test bed 1, taking the railway ballast aggregate 8 from a railway ballast track line of a high-speed railway, screening to obtain the railway ballast aggregate 8 meeting the grading requirement of a special railway ballast of the high-speed railway, washing and drying the screened railway ballast to prevent flying dust from being generated in the test process and influencing the test result, uniformly filling the treated railway ballast on the surface of the railway ballast splashing test bed 1, and filling and compacting the railway ballast in a layering manner.
In order to further optimize the technical scheme of the invention, parameters such as the quantity, the shape, the material quality, the compactness and the like of the railway ballast aggregate 8 above the railway ballast splashing wind tunnel test bed 1 can be adjusted, and the restoration of the railway ballast splashing generation and development rules and the test of the flow field data of the ballast track can be realized under the condition of different railway bed quality states.
Wind speed testing arrangement 9 is fixed in the middle between two and strides the sleeper model 4, includes: the wind speed testing device comprises a wind speed testing device support and a series of wind speed testing probes at different transverse and longitudinal positions, wherein the testing probes are arranged on the wind speed testing device support and are positioned above a track bed, the wind speed testing device support can be used for simultaneously testing 8 measuring points at 8cm intervals in the horizontal direction and 6 measuring points at 5cm intervals in the vertical direction, the wind speed testing device support is arranged inside the track bed, and the transverse and longitudinal positions of the wind speed testing device support can be adjusted. The test probe is connected with the electronic scanning valve through the guide pipe, so that the real-time acquisition of the flow field wind speed above the track is realized.
In order to further optimize the technical scheme of the invention, the protective net 10 is fixed at the tail end of the railway ballast splash test bed 1 (namely, the railway ballast splash test bed is positioned at one end of the wind tunnel outlet), and is composed of wire netting fixed on the inner side of a wood frame, the side length of each grid is smaller than the average grain diameter of railway ballast particles (the side length of each grid in the embodiment of the invention is 0.02m), the length of the wood frame is the same as the width of the railway ballast splash test bed 1, and the railway ballast particles in the test can be prevented from flying off the test bed, so that samples are lost, and even the wind tunnel laboratory fan is damaged.
In order to further optimize the technical scheme of the invention, the video acquisition device 11 is positioned right above the middle part of the railway ballast splashing test bed 1, and can acquire and record the displacement characteristics of the railway ballast sample in the test in real time.
In conclusion, the ballast splashing wind tunnel test platform provided by the invention is specially used for simulating and analyzing the ballast splashing of the high-speed railway, and can accurately reduce the generation and development processes of the ballast splashing of the high-speed railway and test the flow field characteristics of the ballast splashing by accurately simulating the appearance characteristics of the ballast bed, the ballast shoulder, the sleeper, the steel rail and the bottom of the carriage of the ballast track line of the high-speed railway. By increasing or reducing the number of railway ballast aggregates between sleeper models, adjusting parameters such as the shape and the material of railway ballasts in the railway ballast aggregates between sleeper boxes, the height of ballast shoulders of a railway ballast shoulder model, and the height of a bottom model of a carriage and the top surface of a railway ballast splashing test bed, the railway ballast splashing generation and development states can be simulated under the condition of different railway bed parameters. The strength and distribution characteristics of wind speed and wind pressure in different areas on the surfaces of the track bed model, the sleeper model and the ballast shoulder model can be synchronously tested through the wind speed testing device and the wind pressure testing points, and the generation and development mechanism of the ballast splashing is obtained. Through the video acquisition device, the movement behavior of the ballast splashing in the test can be acquired in real time, the threat of the ballast splashing to testing personnel is avoided, and the test safety and accuracy are improved. Meanwhile, the railway ballast splashing wind tunnel test platform is simple in structure, simple and convenient to assemble and disassemble, easy to operate and relatively low in test cost.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a wind tunnel test platform is splashed to railway ballast which characterized in that includes: the device comprises a railway ballast splashing test bed, a test bed bracket, a high-speed train carriage bottom structure model, a sleeper model, a steel rail model, a ballast shoulder model, railway ballast aggregate and wind speed testing device;
the railway ballast splash test bed is characterized in that the railway ballast splash test bed passes through the test bed support and is respectively connected and fixed with a high-speed train carriage bottom structure model and a wind tunnel laboratory floor, the height of the test bed support is adjustable, the sleeper model is arranged in the railway ballast aggregate surface layer, the railway ballast aggregate is arranged in the railway ballast splash test bed surface, the steel rail model is fixed on the top surface of a railway sleeper model rail bearing groove, the railway ballast shoulder model is fixed on the sleeper model and the railway ballast aggregate two sides, and the wind speed testing device is fixed on the railway ballast aggregate surface layer between the sleeper models.
2. The test platform of claim 1, wherein the platform further comprises: and the protective net is fixed at one end of the railway ballast splashing test bed, which is positioned at the outlet of the wind tunnel.
3. The test platform of claim 2, wherein the protective net is made of wire netting fixed on the inner side of a wood frame, the side length of each grid is smaller than the average grain size of ballast particles, and the length of the wood frame is the same as the width of the ballast splash test bed.
4. The test platform of claim 1, wherein the platform further comprises: and the video acquisition device is positioned right above the middle part of the railway ballast splashing test bed and is used for acquiring and recording the displacement characteristics of the railway ballast sample in the test.
5. The test platform according to claim 1, wherein the test bed bracket is of a double-layer angle steel structure, a series of round holes are formed in the surface of the angle steel, an anchor rod is adopted to penetrate through the round holes, the double-layer angle steel is fixedly connected, and the height of the test bed bracket is adjusted.
6. The test platform as claimed in claim 1, wherein the structural model of the bottom of the high-speed train carriage is made of toughened glass material.
7. The test platform as claimed in claim 1, wherein the number of the sleeper models is multiple, the transverse distance between the centers of the sleeper models is adjustable, and a wind pressure measuring point is arranged on the surface of each sleeper model.
8. The test platform according to claim 1, wherein the ballast shoulder model is fixed on two sides of the ballast aggregate and the sleeper model, the slope of the ballast shoulder model is 1:1.75, the pile height can be adjusted to be 0cm, 5cm, 10cm or 15cm, and a wind pressure measuring point is arranged on the surface of the ballast shoulder model.
9. The test platform of claim 1, wherein the steel rail model is made of iron sheet, holes are formed in the bottoms of the front end and the rear end of the steel rail model, the steel rail model and the sleeper model are fixedly connected through anchor rods, and the shape of the steel rail model is completely consistent with that of the section of the high-speed railway steel rail.
10. The test platform of claim 1, wherein the wind speed test device is located between the two middle cross-sleeper models and comprises: the wind speed testing device comprises a wind speed testing device support and a series of wind speed testing probes at different transverse and longitudinal positions, wherein the probes are mounted on the wind speed testing device support and can test the wind speed of a point measured in the horizontal direction and the vertical direction at the same time, the wind speed testing device support is arranged inside a ballast bed, and the transverse and longitudinal positions of the wind speed testing device support can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032445.3A CN111103118A (en) | 2020-01-13 | 2020-01-13 | Railway ballast wind tunnel test platform that splashes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032445.3A CN111103118A (en) | 2020-01-13 | 2020-01-13 | Railway ballast wind tunnel test platform that splashes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111103118A true CN111103118A (en) | 2020-05-05 |
Family
ID=70426289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010032445.3A Pending CN111103118A (en) | 2020-01-13 | 2020-01-13 | Railway ballast wind tunnel test platform that splashes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111103118A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465510A (en) * | 2021-06-18 | 2021-10-01 | 浙江大学 | Device and method for measuring railway ballast track ballast particle migration |
-
2020
- 2020-01-13 CN CN202010032445.3A patent/CN111103118A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465510A (en) * | 2021-06-18 | 2021-10-01 | 浙江大学 | Device and method for measuring railway ballast track ballast particle migration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Quinn et al. | A full-scale experimental and modelling study of ballast flight under high-speed trains | |
| Zhou et al. | Pressure transients induced by a high-speed train passing through a station | |
| EP2425225B1 (en) | Test method for bogies as well as test stand and assembly stand | |
| CN106124208B (en) | It is a kind of to take turns to loading engaging experimental bench | |
| CN103674585B (en) | Rail vehicle runnability test device | |
| CN107389790B (en) | Visual test device of roadbed high-frequency vibration under plane strain condition | |
| Premoli et al. | Ballast flight under high-speed trains: Wind tunnel full-scale experimental tests | |
| CN102042901B (en) | Test bench for suspension self-vibration property of steering frame of railway vehicle based on sine frequency sweeping method | |
| WO2014101407A1 (en) | Method and apparatus for simulated loading of rail transport train whole-train moving load | |
| CN106053234B (en) | A kind of railway tunnel bottom structural dynamic test device and test method | |
| DE202010006811U1 (en) | Schienenprüfvorrichtung | |
| CN105128693B (en) | A kind of medium-and low-speed maglev train gap measurement system and method | |
| CN110702545A (en) | Pantograph/contact net coupling system operation test stand and test method thereof | |
| Khairallah et al. | Monitoring of railway structures of the high speed line BPL with bituminous and granular sublayers | |
| Zakeri et al. | Study of ballast layer stiffness in railway tracks | |
| CN107607192A (en) | Bridge intrinsic frequency identifying system | |
| CN107588916B (en) | Fuel tank noise measurement drive test bed | |
| CN111103118A (en) | Railway ballast wind tunnel test platform that splashes | |
| CN103674583A (en) | Vertical vibration reducing performance test method for railway vehicles | |
| CN211147984U (en) | Railway ballast wind tunnel test platform that splashes | |
| CN115808280A (en) | Double-wheel-pair-framework multi-mode excitation equipment and method for rail vibration damping evaluation | |
| CN115638943A (en) | Excitation test bench and excitation test device | |
| CN207215282U (en) | Bridge intrinsic frequency identifying system | |
| CN105372080B (en) | A kind of tramcar and its embedded tracks Coupled Dynamics test device and method | |
| CN203365098U (en) | Track vertical vibration test platform on the basis that exciter simulates vehicle dynamic load |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |