CN102798509A - Test method for high-speed railway contact network wind-induced response wind tunnel - Google Patents
Test method for high-speed railway contact network wind-induced response wind tunnel Download PDFInfo
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Abstract
The invention relates to a test method for high-speed railway contact network wind-induced response wind tunnel. The wind tunnel test is an effective method for researching high-speed railway contact network wind-induced response. At present, the reliable data of the test technology is insufficient. The test method comprises the following steps: designing a model according to the similarity ratio principle; simulating a wind tunnel boundary layer; calculating and analyzing by using a contact network system structure finite element model to acquire the elasticity, the frequency and the corresponding vibration mode of the contact network; manufacturing and installing a contact network wind tunnel gas bomb model and inspecting the elasticity, the frequency and the corresponding vibration mode of the model; and performing contact network wind tunnel gas bomb model wind tunnel test in a uniform flow field and a turbulent flow field respectively and superposing to acquire total wind-induced response. Under the condition of meeting the engineering precision, the span number is reduced and the boundary condition and the model material are simplified, so the controllability and the practicability are high. The wind tunnel gas bomb model test is performed according to the wind period and the wind speed of the line environment wind, a wind-resistant contact network system applicable to the line can be designed, and the safe reliability of the contact network system can be improved.
Description
Technical field
The invention belongs to the railway electrification technical field, be specifically related to a kind of test method of applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel.
Background technology
Along with the development of high-speed railway, particularly at wind speed under the long adverse environment conditions such as wind district, air port or action of train wind of higher or wind phase, the influence degree that the safe reliability of train operation receives strong wind is outstanding further.
Overhead contact line sets up usually in the open, receives the environmental factor effect for a long time, does not have subsequent usely, in case break down, certainly will influence the normal operation of high-speed railway.The reliability of strong wind district contact net, security and bow net dynamic performance are the key factors of the normal operation of EMUs, directly influence safe, the normal operation of high-speed railway.Overhead contact line produces in lifting and the windage yaw under the effect of crosswind, also can produce wind-induced vibration.The lifting of contact net and the increase of transversal displacement can influence the pantograph safe operation and reliably flowed; Wind-induced vibration not only influences the contact net fatigue resistence, also influences bow net high-speed cruising dynamic mass, even causes pantograph and catenary fault and cause the railway operation accident.When windbreak being set along the line, the vortex cavity after can producing strong wind speedup district and being positioned at windbreak, these all also possibly further strengthen the charming appearance and behaviour displacement response of contact net.
Therefore be necessary to analyze applied to high-speed railway touching net charming appearance and behaviour response characteristic, and wind tunnel test is the effective means of its charming appearance and behaviour response of research, promptly is necessary applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel technique is conducted a research.Still the reliable data that lacks applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel technique at present both at home and abroad.
Summary of the invention
The test method that the purpose of this invention is to provide a kind of applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel; The turbulent flow of the kinematic behavior of model configuration and atmospheric boundary layer truly; The more quiet dynamic interaction of reflect structure and air; Thereby the charming appearance and behaviour response characteristic of examination contact net obtains lifting amount, span centre windage yaw amount and the lifting amount of positive antidirection finding place and the correlation displacement of other care positions.
The technical scheme that the present invention adopted is:
The test method of applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel is characterized in that:
Realize by following steps:
Step 1: design a model according to the ratio of similitude principle:
Confirm the wind speed scaling factor according to contact net wind field and the maximum The test wind of wind-tunnel; Set up the contact net system structural finite element model, obtain the contact net design parameter its quiet effects on dynamic properties rule; By the geometry scaling factor of wind speed, and then obtain quality, rigidity, tension force scaling factor, design contact net gas bullet model than suitable modelling of acquisition and test;
Step 2: wind-tunnel boundary layer simulation:
According to actual contact net reduced scale wind field environment and how much scaling factors of contact net, confirm target wind spectrum; The boundary layer of test and adjustment wind-tunnel makes its average wind section, turbulence intensity section, turbulent wind spectrum compose consistent with target wind;
Step 3: utilize the contact net system structural finite element model to carry out computational analysis, obtain elasticity, frequency and the corresponding vibration shape of contact net;
Step 4: make and installing contact net wind-tunnel gas bullet model, and elasticity, frequency and the corresponding vibration shape of model are tested;
Step 5: in uniform flow field and field of turbulent flow, carrying out contact net gas bullet model wind tunnel test respectively, is axial rotating model through angle of attack plate or with circuit, simulates the wind angle of attack, and the stack of charming appearance and behaviour response obtains total charming appearance and behaviour response in two kinds of flow fields.
In the step 1, the contact net design parameter comprises the elastic modulus of striding number, boundary condition, osculatory and carrier cable.
In the step 1, than the geometry scaling factor that obtains suitable modelling and test, be satisfied or abandon carrying out under two kinds of conditions of weight parameter principle of similarity by wind speed.
In the step 4, making and installing contact net wind-tunnel gas bullet model comprise:
1) pillar modelling and installation: hinged between steady arm base on the column and the positioning pipe, steady arm can be rotated in vertical plane; Flat wrist and oblique arm wrist and column are hinged, are that they can rotate in surface level; Column base and ground are fixed;
2) design and installation of tensioning equipment: use spring balance as tensioning equipment, device comprises spring balance, long bolt, and nut, an end are cemented in the column with holes on ground, and width is slightly larger than the screw rod diameter of section; During installation, an end of spring balance is buckled on the end of long bolt, and long bolt passes the hole on the column, at the nut of other end cover top external diameter greater than leghole; During stretch-draw, the other end of spring balance is buckled on osculatory or the carrier cable, through regulating the nut on the long bolt, can control the length of screw rod leghole one side on the border, comes tensioning and loosens osculatory or carrier cable with this, and tension force can be by reading on the spring balance;
3) osculatory and carrier cable are made and installed: osculatory and carrier cable pass anchor point on the steady arm, connect with spring balance respectively at contact net model two ends, come adjustment of tonicity; After installing dropper and regulating tension force, carrier cable and column junction are fixed, and anchor point is fixed;
In the step 4, be: apply power straight up through anchor point on osculatory and span centre, measure its displacement and can calculate and obtain these some place elasticity to elasticity, frequency and the corresponding vibration shape process of testing of model; Through applying vertical and transversely excited, can measure the first natural frequency of the corresponding vibration shape; The elasticity of test and the frequency and the finite element model of the corresponding vibration shape are calculated contrast, and inspection adjustment gas bullet model is until there being finite element model result of calculation to coincide.
The present invention has the following advantages:
1) realized applied to high-speed railway touching net charming appearance and behaviour response wind tunnel test, this wind-tunnel technique has science, validity.
2) this wind-tunnel technique is scientific and reasonable: satisfying under the condition of engineering precision, can suitably reduce and stride number, simplifying boundary condition and cast material.
3) this wind-tunnel technique controllability is strong: according to contact net place lineament, the boundary element of adjustment wind-tunnel is simulated the real atmosphere boundary layer flow field; Through adding angle of attack plate or being the axial rotating model simulation wind angle of attack with line direction.
4) method for designing is practical: to wind phase, the wind speed of circuit ambient wind, carry out wind-tunnel gas bullet model test, can design the wind proof contact net system that is suitable for this circuit.Be applicable to the wind resistance of applied to high-speed railway touching net system, especially can be used for adverse environment locations such as long wind district of higher or wind phase of wind speed, air port and have the contact net system wind force proofing design wind tunnel test that higher wind resistance requires, improve the safe reliability of contact net system.
Description of drawings
Fig. 1 is an operational flowchart of the present invention.
Fig. 2 is the contact net system structural finite element model.
Embodiment
Below in conjunction with embodiment the present invention is carried out detailed explanation.
Referring to flow process shown in Figure 1, applied to high-speed railway touching net charming appearance and behaviour response wind tunnel test involved in the present invention, realized by following steps:
Step 1: design a model according to the ratio of similitude principle.
1) confirms the wind speed scaling factor, confirm by contact net wind field and the maximum The test wind of wind-tunnel.
2) set up contact net system structural finite element model (see figure 2), carry out the research of contact net design parameter to its quiet kinematic behavior influence, parameter comprises the elastic modulus of striding number, boundary condition, osculatory and carrier cable.Research shows: use three stride and more than stride number, osculatory and carrier cable two ends and substitute full compensation system, relaxed the quiet kinematic behavior that osculatory and the contact net gas bullet model of carrier cable elasticity axial rigidity similar (use iron wire) can fully characterize actual contact net system with the spring border.
3) confirm gas bullet model geometric scaling factor: it is similar that weight parameter is satisfied in first strictness, obtains scaling factors how much by the wind speed ratio; The weight parameter principle of similarity is then abandoned in modelling and test if institute's geometric parameter that obtains does not suit, and selects the rigidity of extension system mainly to be provided by tension force because contact; At this moment, confirm scaling factor how much by the span summation and the tunnel size of multispan contact net gas bullet model (three stride and more than).
4) obtain quality, rigidity, tension force scaling factor, and then design contact net gas bullet model.
Step 2: wind-tunnel boundary layer simulation.
1) according to connecing how much scaling factors of actual net-fault reduced scale wind field environment and contact net, confirms target wind spectrum.
2) boundary layer of test and adjustment wind-tunnel, it is consistent with target wind spectrum that its average wind section, turbulence intensity section, turbulent wind are composed.
Step 3: utilize the contact net system structural finite element model to carry out computational analysis.Analyze the elasticity, frequency and the corresponding vibration shape that obtain contact net.
Step 4: make and installing contact net wind-tunnel gas bullet model, and elasticity, frequency and the corresponding vibration shape of model are tested.
1) pillar modelling and installation: hinged between steady arm base on the column and the positioning pipe, steady arm can be rotated in vertical plane; Flat wrist and oblique arm wrist and column are hinged, are that they can rotate in surface level; Column base and ground are fixed.
2) design and installation of tensioning equipment: use spring balance as tensioning equipment, device comprises spring balance, and long bolt, nut, an end are cemented in (width is slightly larger than the screw rod diameter of section) the with holes column on ground.During installation, an end of spring balance is buckled on the end of long bolt, and long bolt passes the hole on the column, at the nut of other end cover top external diameter greater than leghole.During stretch-draw, the other end of spring balance is buckled on osculatory or the carrier cable, through regulating the nut on the long bolt, can control the length of screw rod leghole one side on the border, comes tensioning and loosens osculatory or carrier cable with this, and tension force can be by reading on the spring balance.
3) osculatory and carrier cable are made and installed: osculatory and carrier cable pass anchor point on the steady arm, connect with spring balance respectively at contact net model two ends, come adjustment of tonicity; After installing dropper and regulating tension force, carrier cable and column junction are fixed, and anchor point is fixed.
4) model testing: apply power straight up through anchor point on osculatory and span centre, measure its displacement and can calculate these some place elasticity of acquisition; Through applying vertical and transversely excited, can measure the first natural frequency of the corresponding vibration shape.The elasticity of test and the frequency and the finite element model of the corresponding vibration shape are calculated contrast, and inspection adjustment gas bullet model is until there being finite element model result of calculation to coincide.
Step 5: carry out contact net gas bullet model wind tunnel test.Test is carried out in uniform flow field and field of turbulent flow respectively, is axial rotating model through angle of attack plate or with circuit, simulates the wind angle of attack.More than in two kinds of flow fields the stack of charming appearance and behaviour response obtain total charming appearance and behaviour response.
It is cited that content of the present invention is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical scheme of the present invention through reading instructions of the present invention is claim of the present invention and contains.
Claims (5)
1. the applied to high-speed railway touching net charming appearance and behaviour responds the test method of wind-tunnel, it is characterized in that:
Realize by following steps:
Step 1: design a model according to the ratio of similitude principle:
Confirm the wind speed scaling factor according to contact net wind field and the maximum The test wind of wind-tunnel; Set up the contact net system structural finite element model, obtain the contact net design parameter its quiet effects on dynamic properties rule; By the geometry scaling factor of wind speed, and then obtain quality, rigidity, tension force scaling factor, design contact net gas bullet model than suitable modelling of acquisition and test;
Step 2: wind-tunnel boundary layer simulation:
According to actual contact net reduced scale wind field environment and how much scaling factors of contact net, confirm target wind spectrum; The boundary layer of test and adjustment wind-tunnel makes its average wind section, turbulence intensity section, turbulent wind spectrum compose consistent with target wind;
Step 3: utilize the contact net system structural finite element model to carry out computational analysis, obtain elasticity, frequency and the corresponding vibration shape of contact net;
Step 4: make and installing contact net wind-tunnel gas bullet model, and elasticity, frequency and the corresponding vibration shape of model are tested;
Step 5: in uniform flow field and field of turbulent flow, carrying out contact net gas bullet model wind tunnel test respectively, is axial rotating model through angle of attack plate or with circuit, simulates the wind angle of attack, and the stack of charming appearance and behaviour response obtains total charming appearance and behaviour response in two kinds of flow fields.
2. the test method of applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel according to claim 1 is characterized in that:
In the step 1, the contact net design parameter comprises the elastic modulus of striding number, boundary condition, osculatory and carrier cable.
3. the test method of applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel according to claim 1 and 2 is characterized in that:
In the step 1, than the geometry scaling factor that obtains suitable modelling and test, be satisfied or abandon carrying out under two kinds of conditions of weight parameter principle of similarity by wind speed.
4. the test method of applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel according to claim 3 is characterized in that:
In the step 4, making and installing contact net wind-tunnel gas bullet model comprise:
1) pillar modelling and installation: hinged between steady arm base on the column and the positioning pipe, steady arm can be rotated in vertical plane; Flat wrist and oblique arm wrist and column are hinged, are that they can rotate in surface level; Column base and ground are fixed;
2) design and installation of tensioning equipment: use spring balance as tensioning equipment, device comprises spring balance, long bolt, and nut, an end are cemented in the column with holes on ground, and width is slightly larger than the screw rod diameter of section; During installation, an end of spring balance is buckled on the end of long bolt, and long bolt passes the hole on the column, at the nut of other end cover top external diameter greater than leghole; During stretch-draw, the other end of spring balance is buckled on osculatory or the carrier cable, through regulating the nut on the long bolt, can control the length of screw rod leghole one side on the border, comes tensioning and loosens osculatory or carrier cable with this, and tension force can be by reading on the spring balance;
3) osculatory and carrier cable are made and installed: osculatory and carrier cable pass anchor point on the steady arm, connect with spring balance respectively at contact net model two ends, come adjustment of tonicity; After installing dropper and regulating tension force, carrier cable and column junction are fixed, and anchor point is fixed.
5. the test method of applied to high-speed railway touching net charming appearance and behaviour response wind-tunnel according to claim 4 is characterized in that:
In the step 4, be: apply power straight up through anchor point on osculatory and span centre, measure its displacement and can calculate and obtain these some place elasticity to elasticity, frequency and the corresponding vibration shape process of testing of model; Through applying vertical and transversely excited, can measure the first natural frequency of the corresponding vibration shape; The elasticity of test and the frequency and the finite element model of the corresponding vibration shape are calculated contrast, and inspection adjustment gas bullet model is until there being finite element model result of calculation to coincide.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217282A (en) * | 2013-03-26 | 2013-07-24 | 中国科学院工程热物理研究所 | Fatigue test method of blade scaling model of horizontal axis wind turbine based on equal-service-life principle |
| CN104458295A (en) * | 2014-12-29 | 2015-03-25 | 成都市第一建筑工程公司 | Construction method for crosswind multiphase flow system for high speed train test |
| CN106468616A (en) * | 2016-09-20 | 2017-03-01 | 华北电力大学 | A kind of computational methods of power transmission tower air spring pole design |
| CN108303230A (en) * | 2018-01-25 | 2018-07-20 | 广州大学 | A kind of test system for wind energy collecting device direction vibration wind tunnel test |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050109882A1 (en) * | 2003-11-20 | 2005-05-26 | Armbruster Robert A. | Strategies for locomotive operation in tunnel conditions |
| CN1994784A (en) * | 2006-12-21 | 2007-07-11 | 铁道第一勘察设计院 | Mobile contact line of electrified railway |
| CN102393184A (en) * | 2011-07-13 | 2012-03-28 | 中铁第一勘察设计院集团有限公司 | Dynamic calculating method of wind-caused vibration and windage yaw of contact net of electrified railway |
-
2012
- 2012-08-13 CN CN201210285928.XA patent/CN102798509B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050109882A1 (en) * | 2003-11-20 | 2005-05-26 | Armbruster Robert A. | Strategies for locomotive operation in tunnel conditions |
| CN1994784A (en) * | 2006-12-21 | 2007-07-11 | 铁道第一勘察设计院 | Mobile contact line of electrified railway |
| CN102393184A (en) * | 2011-07-13 | 2012-03-28 | 中铁第一勘察设计院集团有限公司 | Dynamic calculating method of wind-caused vibration and windage yaw of contact net of electrified railway |
Non-Patent Citations (2)
| Title |
|---|
| 吴家岚: "高速铁路接触网风致响应分析", 《中国优秀硕士学位论文》, 15 April 2012 (2012-04-15) * |
| 张雷等: "受电弓设备对列车气动特性影响的风洞试验", 《中南大学学报（自然科学版）》, vol. 42, no. 12, 31 December 2011 (2011-12-31) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217282A (en) * | 2013-03-26 | 2013-07-24 | 中国科学院工程热物理研究所 | Fatigue test method of blade scaling model of horizontal axis wind turbine based on equal-service-life principle |
| CN103217282B (en) * | 2013-03-26 | 2015-04-22 | 中国科学院工程热物理研究所 | Fatigue test method of blade scaling model of horizontal axis wind turbine based on equal-service-life principle |
| CN104458295A (en) * | 2014-12-29 | 2015-03-25 | 成都市第一建筑工程公司 | Construction method for crosswind multiphase flow system for high speed train test |
| CN104458295B (en) * | 2014-12-29 | 2017-01-18 | 成都市第一建筑工程公司 | Construction method for crosswind multiphase flow system for high speed train test |
| CN106468616A (en) * | 2016-09-20 | 2017-03-01 | 华北电力大学 | A kind of computational methods of power transmission tower air spring pole design |
| CN108303230A (en) * | 2018-01-25 | 2018-07-20 | 广州大学 | A kind of test system for wind energy collecting device direction vibration wind tunnel test |
| CN108303230B (en) * | 2018-01-25 | 2023-05-23 | 广州大学 | Test system for bidirectional vibration wind tunnel test of wind energy collector |
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