EP0703316A2 - Eisenbahnschienen - Google Patents

Eisenbahnschienen Download PDF

Info

Publication number
EP0703316A2
EP0703316A2 EP95109679A EP95109679A EP0703316A2 EP 0703316 A2 EP0703316 A2 EP 0703316A2 EP 95109679 A EP95109679 A EP 95109679A EP 95109679 A EP95109679 A EP 95109679A EP 0703316 A2 EP0703316 A2 EP 0703316A2
Authority
EP
European Patent Office
Prior art keywords
rail
cross
section
fatigue
moment
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.)
Withdrawn
Application number
EP95109679A
Other languages
English (en)
French (fr)
Other versions
EP0703316A3 (de
Inventor
Stefan Radulescu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0703316A2 publication Critical patent/EP0703316A2/de
Publication of EP0703316A3 publication Critical patent/EP0703316A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B5/00—Rails; Guard rails; Distance-keeping means for them
    • E01B5/02—Rails

Definitions

  • This invention relates to heavy-type railway rails for rolling stock capable of supporting an increased traffic on the track.
  • Such rail types achieve increased loads solely by increasing the moment of inertia of cross-section of rail, with the result that the load of fatigue of rail increases at a lower rate compared to the moment of inertia of cross-section of rail, thus increasing the cost of railway. This result is more visible in case of heavier heavy-type rails.
  • the present invention comprises a rail composed of a rail base, a rail web and a rail head. It is an objective of the present invention to provide a rail having an increased moment of inertia of cross-section and an increased height from the lower side of rail base to the neutral axis of the rail. It is another objective of the present invention to obtain a balanced stress in the rail base and in the rail head by providing a rail in which the ratio of the moment of fatigue of rail base divided by the moment of fatigue of rail head is between 0.9 and 1.
  • the present invention introduces new relations related to endurance of materials, and of bars subjected to bending test, respectively.
  • the bending momentum is balanced by the sum of moments given by unitary normal stresses within the bar. It is known that such stresses are null upon the horizontal neutral axis and maximum at vertical extremities of the bar.
  • M ob sp c ⁇ ob c ⁇ H c ⁇ ⁇ [ Kg ⁇ mm ]
  • M ob sp t ⁇ ob t ⁇ H t ⁇ ⁇ [ Kg ⁇ mm ]
  • H c is the height of rail head with respect to the horizontal neutral axis of rail
  • H t is the height from the lower side of rail base to the horizontal neutral axis of rail
  • ⁇ ⁇ 1 mm 2 is the minimum area element.
  • a rail according to the present invention is composed of a lower and upper cross-section portions determined by the horizontal neutral axis of cross-section.
  • the loading factor of fatigue is given by the specific moments of fatigue of the cross-section portions or by the squares of heights of the cross-section portions.
  • FIG. 1 the rail according to the preferred embodiment of the present invention for increasing the lifetime of heavy-type rails, is shown in FIG. 1.
  • the left side with respect to vertical axis Y-Y represents the current standard rail, while the right side represents the rail of the present invention.
  • Each of these rails is composed of a rail head 1 at its upper side, a rail web 2 at its center side and a rail base 3 at its lower side. The difference between the two rails is given by the height h, located at the upper side of rail head of standard rail.
  • the standard rail has the moment of inertia and the height where represent the heights of cross-section with respect to its horizontal neutral axis Xo-Xo.
  • the upper side of rail head is increased with a height h, which makes Hc to slightly increase with respect to Hco.
  • Ht increases significantly with respect to Hto, considering the rising of the center of weight, and the new axis X-X, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Railway Tracks (AREA)
  • Heat Treatment Of Articles (AREA)
EP95109679A 1994-06-22 1995-06-22 Eisenbahnschienen Withdrawn EP0703316A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RO107894 1994-06-22
RO94-01078A RO111255B1 (ro) 1994-06-22 1994-06-22 Îmbinare prin sudură aluminotermică a şinelor de rulare

Publications (2)

Publication Number Publication Date
EP0703316A2 true EP0703316A2 (de) 1996-03-27
EP0703316A3 EP0703316A3 (de) 1997-01-29

Family

ID=20100893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109679A Withdrawn EP0703316A3 (de) 1994-06-22 1995-06-22 Eisenbahnschienen

Country Status (5)

Country Link
EP (1) EP0703316A3 (de)
AU (1) AU2480695A (de)
CA (1) CA2152404A1 (de)
RO (1) RO111255B1 (de)
WO (1) WO1995035413A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997045320A1 (en) * 1996-05-31 1997-12-04 Sikorsky Aircraft Corporation Monolithic structures having improved flaw tolerance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014203837A1 (de) * 2013-04-22 2014-10-23 Db Netz Ag Computerimplementiertes Verfahren zur Berechnung eines hinsichtlich reduzierter Lärmemission optimierten Schienenprofils sowie lärmarme Schiene

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190020889A (en) * 1900-11-19 1900-12-31 James Ely Hall Improvements in Reversible Rails and Joints
DE560327C (de) * 1929-11-25 1932-10-05 Boris Pawlowitsch Andreianow Breitfussschiene

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ESVELD: "Modern Railway Track" 1989 , MRT PRODUCTIONS , DUISBURG (DE) XP002019734 166260 * page 150 - page 151 * *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997045320A1 (en) * 1996-05-31 1997-12-04 Sikorsky Aircraft Corporation Monolithic structures having improved flaw tolerance

Also Published As

Publication number Publication date
EP0703316A3 (de) 1997-01-29
AU2480695A (en) 1996-01-04
WO1995035413A1 (en) 1995-12-28
RO111255B1 (ro) 2004-08-30
CA2152404A1 (en) 1995-12-23

Similar Documents

Publication Publication Date Title
US3539170A (en) Rubber and like material springs
US5683001A (en) Rack for mounting electronic apparatuses
Wu et al. Steady-state response and riding comfort of trains moving over a series of simply supported bridges
JP2530384B2 (ja) リニアモ―タエレベ―タ―
US5544591A (en) Stabilized roller bearing adapter
EP0753442A2 (de) Leichter Längsträger mit erhöhtem Widerstand gegen seitliche Verdrehung für ein Drehgestell für Schienenfahrzeuge
Popov et al. Methodology for optimum EBF link design
CA2463099A1 (en) Reinforced pallet
KR20110110307A (ko) 철로 차량 차대 및 그 부재들
EP0703316A2 (de) Eisenbahnschienen
CA1239310A (en) Railroad-vehicle truck
US5054964A (en) Stiffening element for a lattice girder
US5346190A (en) Box spring assembly support spring
CA2234408A1 (en) Truck mounted brake for standard and premium ride trucks
AU2005297308B2 (en) Rail vehicle comprising at least two impact-absorbing posts arranged in a front end region of the rail vehicle and having collapsible regions where buckling occurs in the event of a collision
JPH08193383A (ja) Ｉ型桁の座屈補剛構造
CA1142136A (en) Column construction for cantilever storage racks
Lindsey Design of frames with PR connections
EP0925976A2 (de) Führung für bewegbare Abdeckungen und Abdeckung mit solcher Führung
JPH0762608A (ja) 単弦ニールセン系アーチ橋
JPH1081469A (ja) エレベータのつり合い重り
JPH0673710A (ja) 斜張橋
RU2220249C1 (ru) Транспортная система юницкого (варианты) и способ построения транспортной системы
RU2208570C2 (ru) Арочный рельс
Pattanayak et al. Lateral instability of castellated beams

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE FR GB IT LI LU SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR GB IT LI LU SE

17P Request for examination filed

Effective date: 19970729

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19990105