WO1998028492A1 - Kurvenzug einer weiche sowie gleisverbindung unter verwendung eines derartigen kurvenzuges - Google Patents
Kurvenzug einer weiche sowie gleisverbindung unter verwendung eines derartigen kurvenzuges Download PDFInfo
- Publication number
- WO1998028492A1 WO1998028492A1 PCT/AT1997/000276 AT9700276W WO9828492A1 WO 1998028492 A1 WO1998028492 A1 WO 1998028492A1 AT 9700276 W AT9700276 W AT 9700276W WO 9828492 A1 WO9828492 A1 WO 9828492A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- curve
- curvature
- switch
- beginning
- point
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/15—Layout or geometry of the track
Definitions
- the invention relates to a curve of a switch with switch tongues, a main track and a branch track, the curve from the beginning of the curve to the end of the curve
- R is the radius of curvature
- WO 95/31604 shows a curve for the course of rails from the main track to a branch track, in which likewise starting from a first end section with a radius of curvature towards infinity, the other end of the turnout in turn with a radius towards infinite ends is to avoid additional vibrations that can interfere with vehicles.
- a curve was chosen which is composed of three sections, three sections of approximately the same length being used. Starting from a curvature with a radius of curvature that tends towards infinity, a middle section with constant curvature is selected, the radius of which is a minimum over the curve.
- the course of two conventional tional clothoid with an intermediate section in the form of an arc of a circle is selected from the course of two conventional tional clothoid with an intermediate section in the form of an arc of a circle.
- the curvature 1 / R defines a dimensionless curvature coefficient ⁇ , which is equal to the quotient of the current curvature 1 / R and the maximum curvature l / Rmin, the maximum curvature in turn resulting from the quotient 1 by the minimum radius .
- ⁇ can assume values between 0 and 1, so at the points where ⁇ is 0, the radius tends towards infinity, since the minimum radius has a finite value.
- this coefficient ⁇ takes the value 1.
- a coefficient v is defined below, which relates the distance between the point of the curve in question and the start of the curve to the total length of the curve.
- v is thus 0 at the start of the curve and 1 at the end of the curve and takes any values between 0 and 1 in direct proportion to the distance from the start of the curve.
- a switch which is mainly driven in one direction is designed with particular advantage such that for a switch used with a point C_A between 0 and 0.5, 06E between 0.5 and 1 and v for ⁇ m ⁇ between 0.4 and 1 and not equal to 0 , 5 is selected and that CCA between 0.3 and 0.7, CE between 0 and 0.5 and V for m ax between 0.3 and ⁇ 0.5 is selected for a dull switch.
- the values for the various curve geometries given above for the different directions of travel have been optimized with regard to minimum lateral acceleration and intake jerk as well as less wear and tear and small wheel rail forces.
- a low lateral acceleration and inlet jerk ensure a high level of comfort when driving the switch, low wear and small wheel rail forces enable the switch to have a long service life.
- the design according to the invention is such that one and only one point of maximum curvature or with a minimum radius with v ⁇ 0.5 is provided between the beginning of the curve and the end of the curve.
- the departure from the previously chosen symmetry as proposed, for example, in WO 95/31604, is associated with a significant improvement in comfort and a reduction in wear.
- the curve geometry can have the shape of an apex clothoid in the curved course, where v assumes a value of ⁇ 0.5 in accordance with the definition selected in the case of using such an apex clothoid.
- the design is such that the sections of clothoids and / or cosinoids which are different from the circular arc shape are formed. If, as already mentioned above, the direction of travel is also taken into account in the considerations of the turnout geometry, the curve geometry is particularly advantageously defined such that the point with a maximum amount of curvature is arranged at the end of the turn in the case of a turnout which is driven to a point.
- the curve according to the invention is particularly suitable for the formation of track connections which are to be traveled at high speeds.
- a track connection according to the invention using switches of the type mentioned at the beginning, which are used on both sides, is preferably designed in such a way that the curve ends merge with a CCE between 0 and 0.5 into a straight-line connection section.
- the track connection is made in a particularly preferred manner such that the straight section has a length of 5 to 30% of the total length Lg e s of a curve.
- This straight-line connection section in the ratio of 5 to 30% of the total length of a curve train results in a significantly increased calming of the vehicle run.
- turnout geometries according to the invention can thus be used above all for track connections which are used at high speed, the combination of different turnout geometries according to the invention, as defined above, ensuring significantly lower wear and a significantly longer service life.
- FIG. 1 shows a schematic top view of a conventional track connection, in which two branch tracks merge into an essentially straight-line intermediate section using a constant radius of curvature.
- the associated diagram is shown in FIG. 1
- FIG. 3 instead of the curvature, the dimensionless curvature coefficient ⁇ is plotted over the length of a track connection with the curves according to the invention, FIG. 4 shows a single turn geometry of an apex clothoid, ⁇ being plotted against v, and FIG. 5 shows an analog representation for a cosinoid and FIGS. 6 to 8 show the values for special designs of switches.
- Fig. 1 the main track is denoted by 1
- the length of the curve in question is denoted by Lges in the illustration of FIG. 2.
- 1 and 2 a conventional curve geometry according to the prior art has been shown, the branch tracks 2 branching off with a constant radius and merging into a straight-line central section 3. The change in curvature - 1 over the
- Length L of the track connection can be seen directly from FIG. 2.
- Embodiment has a value of about 0.2 to 0.3, the straight section extending to the end of the second curve at V5. At this point the clothoid with dull traffic was again formed with a 0.5 ⁇ 0, so that here too there is a discontinuous transition into the curve of the subsequent switch.
- the second switch of this track connection is designed mirror-symmetrically like the asymmetrically constructed first switch, so that here again a clothoid 6 is provided in the inlet area and a circular arc section 5 is connected to Vß, which opens into a clothoid 4.
- the apex clothoid 7 for the pointed passage has its maximum curvature or its maximum ⁇ at the
- the apex clothoid deviates from the training during the point crossing ⁇ i ⁇
- ⁇ increases with this vertex-clothoid geometry, which is particularly advantageous for stump traversing, up to position V2 and reaches the maximum ⁇ 2 closer to the beginning of the curve with blunt traversal.
- 3 at position V3 is again selected to be greater than 0 and not equal to ⁇ i at position vi.
- ⁇ i is at position v 1 ° and passes through a maximum at position V2 with the value ⁇ 2.
- the change in the radius of the curve continues until point V3 on the end of the cosinoids facing away from the tongue, where ⁇ 3 assumes a value different from ⁇ i and different from 0.
- V2 is again off-center between vi and V3, which achieves the desired effects in terms of wear reduction and comfort improvement.
- ⁇ A denote the curvature coefficients at the beginning of the curve
- ⁇ the curvature coefficients at the end of the curve
- the hatched line determines the area which should be more practicable due to the practical feasibility.
- the full line determines the optimal solution area.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Toys (AREA)
- Sewing Machines And Sewing (AREA)
- Push-Button Switches (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Catching Or Destruction (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Navigation (AREA)
- Platform Screen Doors And Railroad Systems (AREA)
- Image Analysis (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU78743/98A AU719664B2 (en) | 1996-12-23 | 1997-12-12 | Curve path of a switch as well as switch connection using such a curve path |
PL97334563A PL334563A1 (en) | 1996-12-23 | 1997-12-12 | Railway track switch section curvature shape and junction of railway tracks incorporating such curvature shape |
DE59709416T DE59709416D1 (de) | 1996-12-23 | 1997-12-12 | Kurvenzug einer weiche sowie gleisverbindung unter verwendung eines derartigen kurvenzuges |
CA002275768A CA2275768A1 (en) | 1996-12-23 | 1997-12-12 | Curve path of a switch, and track joint using this type of curve path |
AT97955078T ATE233347T1 (de) | 1996-12-23 | 1997-12-12 | Kurvenzug einer weiche sowie gleisverbindung unter verwendung eines derartigen kurvenzuges |
EP97955078A EP0956390B1 (de) | 1996-12-23 | 1997-12-12 | Kurvenzug einer weiche sowie gleisverbindung unter verwendung eines derartigen kurvenzuges |
US09/331,452 US6371418B1 (en) | 1996-12-23 | 1997-12-12 | Curve path of a switch, and track joint using this type of curve path |
NO993100A NO993100L (no) | 1996-12-23 | 1999-06-22 | Kurvebane for en pens samt skinneforbindelse som benytter en slik kurvebane |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA2254/96 | 1996-12-23 | ||
AT0225496A AT404743B (de) | 1996-12-23 | 1996-12-23 | Kurvenzug einer weiche sowie gleisverbindung unter verwendung eines derartigen kurvenzuges |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998028492A1 true WO1998028492A1 (de) | 1998-07-02 |
Family
ID=3530915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT1997/000276 WO1998028492A1 (de) | 1996-12-23 | 1997-12-12 | Kurvenzug einer weiche sowie gleisverbindung unter verwendung eines derartigen kurvenzuges |
Country Status (15)
Country | Link |
---|---|
US (1) | US6371418B1 (de) |
EP (1) | EP0956390B1 (de) |
KR (1) | KR20000069684A (de) |
CN (1) | CN1114733C (de) |
AT (1) | AT404743B (de) |
AU (1) | AU719664B2 (de) |
CA (1) | CA2275768A1 (de) |
DE (1) | DE59709416D1 (de) |
ES (1) | ES2192280T3 (de) |
HU (1) | HUP0001072A3 (de) |
NO (1) | NO993100L (de) |
PL (1) | PL334563A1 (de) |
PT (1) | PT956390E (de) |
WO (1) | WO1998028492A1 (de) |
ZA (1) | ZA9711510B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114705148A (zh) * | 2022-04-03 | 2022-07-05 | 国交空间信息技术(北京)有限公司 | 基于二次筛选的道路弯曲点检测方法和装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6751547B2 (en) * | 2001-11-26 | 2004-06-15 | Hrl Laboratories, Llc | Method and apparatus for estimation of forward path geometry of a vehicle based on a two-clothoid road model |
US7729819B2 (en) * | 2004-05-08 | 2010-06-01 | Konkan Railway Corporation Ltd. | Track identification system |
DE202009012104U1 (de) | 2009-09-04 | 2009-11-12 | Kuss, Joachim, Dipl.-Wirtsch.-Ing. | Windkraftanlage mit radial verstellbaren Rotorblättern |
CH712173A2 (de) * | 2016-02-22 | 2017-08-31 | Swiss Transp Res Inst Ag | Wechselweiche sowie Schienennetz mit mindestens einer solchen Wechselweiche. |
WO2019021950A1 (ja) * | 2017-07-26 | 2019-01-31 | 三菱電機株式会社 | 搬送路切替装置及びエレベータ装置 |
CN107740312B (zh) * | 2017-09-28 | 2019-05-07 | 上海海事大学 | 基于回旋曲线的有轨运行起重运输机械转弯轨道设计方法 |
CN110373957A (zh) * | 2019-07-30 | 2019-10-25 | 中国铁建重工集团股份有限公司道岔分公司 | 组合道岔结构 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2199606A (en) * | 1986-12-12 | 1988-07-13 | Magyar Allamvasutak Vezerigazg | Railway switch |
WO1995031604A1 (de) * | 1994-05-16 | 1995-11-23 | Bwg Butzbacher Weichenbau Gmbh | Kurvenzug |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2051882C2 (de) * | 1970-10-22 | 1975-03-06 | Elektro-Thermit Gmbh, 1000 Berlin | Zungenweiche mit zwei Zungenpaaren aus Gleisabschnitten des Stamm- und des Zweiggleises |
US4948073A (en) * | 1988-10-24 | 1990-08-14 | Kadee Metal Products, Co. | Turnout with closing frog |
IT1242226B (it) * | 1990-10-10 | 1994-03-03 | Sasib Spa | Dispositivo di manovra per deviatoi ferroviari, in particolare per linee ad alta velocita' |
US5375797A (en) * | 1993-09-17 | 1994-12-27 | Willow; Robert E. | Compound geometry rail switch |
DE4343395A1 (de) * | 1993-12-18 | 1995-06-22 | Magnetbahn Gmbh | Weiche für Fahrwege von spurgeführten Fahrzeugen mit Linearmotorantrieb |
-
1996
- 1996-12-23 AT AT0225496A patent/AT404743B/de not_active IP Right Cessation
-
1997
- 1997-12-12 PT PT97955078T patent/PT956390E/pt unknown
- 1997-12-12 KR KR1019997005733A patent/KR20000069684A/ko not_active Application Discontinuation
- 1997-12-12 CN CN97181844A patent/CN1114733C/zh not_active Expired - Fee Related
- 1997-12-12 DE DE59709416T patent/DE59709416D1/de not_active Expired - Fee Related
- 1997-12-12 WO PCT/AT1997/000276 patent/WO1998028492A1/de active IP Right Grant
- 1997-12-12 PL PL97334563A patent/PL334563A1/xx unknown
- 1997-12-12 AU AU78743/98A patent/AU719664B2/en not_active Ceased
- 1997-12-12 EP EP97955078A patent/EP0956390B1/de not_active Expired - Lifetime
- 1997-12-12 HU HU0001072A patent/HUP0001072A3/hu unknown
- 1997-12-12 CA CA002275768A patent/CA2275768A1/en not_active Abandoned
- 1997-12-12 US US09/331,452 patent/US6371418B1/en not_active Expired - Fee Related
- 1997-12-12 ES ES97955078T patent/ES2192280T3/es not_active Expired - Lifetime
- 1997-12-22 ZA ZA9711510A patent/ZA9711510B/xx unknown
-
1999
- 1999-06-22 NO NO993100A patent/NO993100L/no not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2199606A (en) * | 1986-12-12 | 1988-07-13 | Magyar Allamvasutak Vezerigazg | Railway switch |
WO1995031604A1 (de) * | 1994-05-16 | 1995-11-23 | Bwg Butzbacher Weichenbau Gmbh | Kurvenzug |
Non-Patent Citations (1)
Title |
---|
HOLZINGER UND FRITZ: "Entwicklung moderner Hochleistungsweichen zur Wahrung der Zukunftschancen der Bahn", ETR, vol. 39, no. 1/2, 1990, DARMSTADT, pages 71 - 78, XP002061773 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114705148A (zh) * | 2022-04-03 | 2022-07-05 | 国交空间信息技术(北京)有限公司 | 基于二次筛选的道路弯曲点检测方法和装置 |
CN114705148B (zh) * | 2022-04-03 | 2023-10-24 | 国交空间信息技术(北京)有限公司 | 基于二次筛选的道路弯曲点检测方法和装置 |
Also Published As
Publication number | Publication date |
---|---|
NO993100L (no) | 1999-08-20 |
AU719664B2 (en) | 2000-05-11 |
CA2275768A1 (en) | 1998-07-02 |
HUP0001072A2 (hu) | 2000-08-28 |
EP0956390B1 (de) | 2003-02-26 |
NO993100D0 (no) | 1999-06-22 |
PL334563A1 (en) | 2000-03-13 |
CN1246168A (zh) | 2000-03-01 |
KR20000069684A (ko) | 2000-11-25 |
ZA9711510B (en) | 1998-06-25 |
CN1114733C (zh) | 2003-07-16 |
EP0956390A1 (de) | 1999-11-17 |
HUP0001072A3 (en) | 2002-01-28 |
ES2192280T3 (es) | 2003-10-01 |
PT956390E (pt) | 2003-06-30 |
ATA225496A (de) | 1998-06-15 |
US6371418B1 (en) | 2002-04-16 |
AU7874398A (en) | 1998-07-17 |
AT404743B (de) | 1999-02-25 |
DE59709416D1 (de) | 2003-04-03 |
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