WO2022017278A1 - Structure de raccordement de voie ferrée sans ballast d'une ligne de chemin de fer à grande vitesse - Google Patents

Structure de raccordement de voie ferrée sans ballast d'une ligne de chemin de fer à grande vitesse Download PDF

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Publication number
WO2022017278A1
WO2022017278A1 PCT/CN2021/106763 CN2021106763W WO2022017278A1 WO 2022017278 A1 WO2022017278 A1 WO 2022017278A1 CN 2021106763 W CN2021106763 W CN 2021106763W WO 2022017278 A1 WO2022017278 A1 WO 2022017278A1
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WO
WIPO (PCT)
Prior art keywords
track
ballastless track
ballastless
bed
rail
Prior art date
Application number
PCT/CN2021/106763
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English (en)
Chinese (zh)
Inventor
潘自立
刘在庆
曾加胤
李粮余
李保友
杨明辉
张凯
葛根荣
莫宏愿
Original Assignee
中铁二院工程集团有限责任公司
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Application filed by 中铁二院工程集团有限责任公司 filed Critical 中铁二院工程集团有限责任公司
Publication of WO2022017278A1 publication Critical patent/WO2022017278A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B33/00—Machines or devices for shifting tracks, with or without lifting, e.g. for aligning track, for shifting excavator track
    • 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
    • E01B2/00—General structure of permanent way

Definitions

  • the invention relates to rail traffic, in particular to a ballastless track dial connection structure of a high-speed railway.
  • the quality of the track in this section cannot be guaranteed to meet the safe operation of the EMU.
  • the direct dial-up of the ballastless track on the 70m main line of the high-speed railway has no precedent in China or even in the world.
  • the technical problem to be solved by the present invention is to provide a ballastless track dial connection structure for high-speed railways, so as to shorten the construction time of the dial connection foundation to the greatest extent, and at the same time protect the original ballastless track from being damaged, and to completely rectify the basic diseases under the station line After the skylight time dialed back to the main line ballastless track, a solid foundation was laid.
  • the ballastless track dial connection structure of the present invention includes a main line ballastless track and a ballasted track access line located on one side of the main line ballastless track.
  • a double-block sleeper is fixedly arranged on its upper part, and is characterized in that: the ballasted track access line is composed of a ballasted track bed and a sleeper, and a transition section is set between the ballastless track and the ballasted track access line on the main line as a convenience.
  • the main body of this transition section is a reinforced concrete widened track bed poured on the outside of the existing ballast bed; a certain length in front of the transition section and the main line ballastless track is the rail surface elevation elevation section, the rail is In the face elevation lifting section, an assembled rail bearing platform is fixed on the top surface of the existing ballastless track bed and the reinforced concrete widened track bed, and the access line rail is locked through the assembled rail bearing platform, and the geometric shape and position of the rail surface are arranged to complete. Dial-up line.
  • the track connection time is greatly shortened.
  • the ballastless track connection uses the skylight time before the connection to construct the reinforced concrete widened track bed and the assembled rail bearing platform, which ensures the construction quality and enables the track connection in a short period of 4.5 completed within hours;
  • the ballastless track is connected, overcome the problem of poor initial stability of the ballasted track, and effectively ensure the stable state of the track required for the EMU operation;
  • ballastless track connection did not damage the ballast bed, which reduced repetitive engineering and saved engineering investment. It takes time to ensure the quality of the ballastless bed.
  • Fig. 1 is the plan view of a kind of high-speed railway ballastless track dial connection structure of the present invention
  • Fig. 2 is a sectional view along line I-I in Fig. 1;
  • Fig. 3 is a sectional view along line II-II in Fig. 1;
  • Fig. 4 is a sectional view along line III-III in Fig. 1;
  • Fig. 5 is the sectional view along IV-IV line in Fig. 1;
  • FIG. 6 is a schematic structural diagram of an adjustment fastener used in the invention of a ballastless track dial connection structure of a high-speed railway;
  • FIG. 7 is a top view of an adjusting fastener used in the invention of a ballastless track dial connection structure of a high-speed railway;
  • main line ballastless track 10 support layer 11, existing ballastless bed 12, existing double block sleeper 13, main line rail 14, ballasted track access line 20, ballasted Track bed 21, sleeper 22, access rail 23, reinforced concrete widened track bed 30, connecting steel bar 31, geotextile isolation layer 32, assembled rail bearing platform 40, fastener 41, base 42, connecting bolt 43, nut 44, chemical Anchor bolt 45, first height-adjusting pad 46, first buffer pad 47, second height-adjustment pad 48, second buffer pad 49, transition section L 1 , rail surface elevation lift section L 2, existing The rail surface elevation is ⁇ 0, and the access line rail surface elevation is +H.
  • a ballastless track connection structure of a high-speed railway of the present invention includes a main line ballastless track 10 and a ballasted track access line 20 located on one side thereof.
  • the main line ballastless track 10 includes an existing ballastless bed 12 located on the support layer 11, and an existing double-block sleeper 13 is fixedly arranged on the upper portion thereof.
  • the ballast track consists of 20 lines will be ballasted track bed 21 and sleeper 22, ballastless track 10 and the positive line L 1 ballasted track arranged dial-based transition line between the transition section 20 as it will be the line, the transition body section of L 1 is pouring in both non-ballasted track bed 12 outside the reinforced concrete track bed 30 is widened.
  • a certain length in front of the transition section L 1 and the main line ballastless track 10 is the rail surface elevation section L 2 , and the rail surface elevation section L 2 has existing ballastless track beds 12 and/or reinforced concrete widened track beds 30 .
  • An assembled rail support platform 40 is fixedly arranged on the top surface, and the access line rail 23 is locked by the assembled rail support platform 40, and the geometric shape and position of the rail surface are arranged to complete the access line connection.
  • the ballastless track connection uses the skylight time before the connection to construct the reinforced concrete widened track bed 30 and the assembled rail bearing platform 40, which greatly shortens the track connection time, so that the track connection can be completed in just 4.5 hours. Completed within, and the construction quality can be guaranteed.
  • the ballastless track By connecting the ballastless track, the problem of poor initial stability of the ballasted track is overcome, and the stable state of the track required by the EMU operation is effectively guaranteed. It creates conditions for the rapid return of the ballastless track on the main line after the remediation.
  • the ballastless track is connected without damage to the ballast bed, which reduces repetitive engineering, saves project investment, and saves time for the reconnection to the main line after the remediation is completed. , to ensure the quality of the ballastless bed.
  • the surface elevation lifting rail section L 2 is increased from the assembled rail-seat 40 downslope, the downslope end of the transition section should be higher than both the rail bi-block sleepers collar less than 5mm.
  • the assembled rail bearing platform 40 is arranged between the existing double-block sleepers 13 adjacent in the longitudinal direction on the existing ballastless track bed 12, and installation holes are drilled on the existing ballastless track bed 12 and the reinforced concrete widened track bed 30.
  • the assembled rail bearing platform 40 is fixedly installed on the top surface of the existing ballastless ballast bed 12 and/or the reinforced concrete widened ballast bed 30 through chemical anchor bolts 45 .
  • the bore holes on the surface of the existing ballast bed should be located between the existing ballastless ballast beds 12 . Drilling should strictly control the construction accuracy to ensure that the drilling meets the installation requirements of the assembled rail bearing platform 40 .
  • the assembled rail bearing platform 40 includes a fastener 41 , a base 42 , a first height-adjusting pad 46 and a second height-adjusting pad 48 , and the rail is mounted on the base 42 through the fastener 41 , the first height-adjusting backing plate 46 and the second height-adjusting backing plate 48 are arranged under the base 42 , and the fixing nut 44 is welded on the bottom surface of the first height-adjusting backing plate 46 and passes through the connection between the base 42 and the first height-adjusting backing plate 46 The bolt 43 is connected to the nut 44 .
  • the chemical anchor bolts 45 pass through the first height-adjusting pad 46 and the second height-adjusting pad 48 into the installation holes, and anchor and install the assembled rail bearing platform 40 on the existing ballastless ballast bed 12 and/or the reinforced concrete widened ballast bed 30 on the top surface.
  • a first buffer pad 47 is arranged between the bottom surface of the first height-adjusting pad 46 and the top surface of the second height-adjusting pad 48, and the bottom surface of the second height-adjusting pad 48 is connected to the existing ballast bed 12 and/or reinforced concrete.
  • a second buffer pad 49 is arranged between the top surfaces of the widened track bed 30 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Railway Tracks (AREA)

Abstract

L'invention concerne une structure de raccordement de voie ferrée sans ballast d'une ligne de chemin de fer à grande vitesse, comprenant une voie ferrée sans ballast de ligne principale (10) et une ligne temporaire de voie ferrée ballastée (20) située sur un côté de la voie ferrée sans ballast de ligne principale (10). La ligne temporaire de voie ferrée ballastée (20) est constituée d'une assiette de voie ferrée ballastée (21) et d'une traverse de voie ferrée (22). Une section de transition (L1) est disposée entre la voie ferrée sans ballast de ligne principale (10) et la ligne temporaire de voie ferrée ballastée (20) pour servir de fondation de raccordement de transition de ligne temporaire. Un corps principal de la section de transition (L1) est une assiette de voie ferrée élargie en béton armé (30) versée sur le côté extérieur d'une assiette de voie ferrée sans ballast existante (12). Une certaine longueur devant la section de transition (L1) et la voie ferrée sans ballast de ligne principale (10) est une section de levage d'élévation de surface de voie ferrée (L2). Des tables de support d'assemblage de voie ferrée (40) sont disposées de manière fixe sur des surfaces supérieures de l'assiette de voie ferrée sans ballast existante (12) et de l'assiette de voie ferrée élargie en béton armé (30) dans la section de levage d'élévation de surface de voie ferrée (L2). Au moyen des tables de support d'assemblage de voie ferrée (40), une voie ferrée en acier de ligne temporaire (23) est bloquée, et la géométrie de la surface de la voie ferrée est agencée pour réaliser le raccordement de la ligne temporaire. La structure de raccordement raccourcit le temps de construction de la fondation de raccordement dans la plus grande mesure du possible, et pose une fondation solide à des fins de raccordement à la voie ferrée sans ballast de ligne principale (10) au cours d'une période de temps de maintenance après avoir traité minutieusement les défauts de fondation sous-jacents des gares.
PCT/CN2021/106763 2020-07-20 2021-07-16 Structure de raccordement de voie ferrée sans ballast d'une ligne de chemin de fer à grande vitesse WO2022017278A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010701330.9 2020-07-20
CN202010701330.9A CN111893819A (zh) 2020-07-20 2020-07-20 一种高速铁路无砟轨道拨接结构

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WO2022017278A1 true WO2022017278A1 (fr) 2022-01-27

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CN (1) CN111893819A (fr)
WO (1) WO2022017278A1 (fr)

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CN114922008A (zh) * 2022-05-23 2022-08-19 中铁十五局集团有限公司 一种无砟轨道高速铁路路基面加筋防水结构及其施工方法
CN115305754A (zh) * 2022-09-15 2022-11-08 中铁第四勘察设计院集团有限公司 一种高速铁路有砟轨道双线同时拨接的施工方法
CN116227262A (zh) * 2022-12-12 2023-06-06 中国矿业大学 一种高速铁路无砟轨道宽频动力学精细化仿真方法

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* Cited by examiner, † Cited by third party
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CN111893819A (zh) * 2020-07-20 2020-11-06 中铁二院工程集团有限责任公司 一种高速铁路无砟轨道拨接结构
CN115198574B (zh) * 2022-08-10 2023-05-09 中铁六局集团有限公司 一种整体道床线路拨接合金钢板轨道承载结构及其应用

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EP1887135A2 (fr) * 2006-08-03 2008-02-13 RAIL.ONE GmbH Voie pour véhicules sur rail
CN101503870A (zh) * 2008-12-03 2009-08-12 中铁八局集团第一工程有限公司 一种双块式无砟轨道道床板的施工方法
CN203360958U (zh) * 2013-05-24 2013-12-25 中铁七局集团有限公司 铁路营业线施工轨道拨接平移装置
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Publication number Priority date Publication date Assignee Title
CN114922008A (zh) * 2022-05-23 2022-08-19 中铁十五局集团有限公司 一种无砟轨道高速铁路路基面加筋防水结构及其施工方法
CN115305754A (zh) * 2022-09-15 2022-11-08 中铁第四勘察设计院集团有限公司 一种高速铁路有砟轨道双线同时拨接的施工方法
CN116227262A (zh) * 2022-12-12 2023-06-06 中国矿业大学 一种高速铁路无砟轨道宽频动力学精细化仿真方法
CN116227262B (zh) * 2022-12-12 2023-12-12 中国矿业大学 一种高速铁路无砟轨道宽频动力学精细化仿真方法

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