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Precast slab type ballastless track structure

A ballastless track and prefabricated slab technology, applied in tracks, roads, buildings, etc., can solve the problems of complex stress on bridges and track systems, expensive finishing of track slabs, and complicated construction operations, and achieve a clear transmission path of structural mechanics. , to meet the high smoothness and high stability, the effect of simple construction

Inactive Publication Date: 2011-09-14
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The CRTS II slab ballastless track spans the gap between the beams, the bridge and track system are under complex stress, and the construction operation is cumbersome; the track slab is a longitudinal structure, and the maintainability is relatively poor; The integrity has a certain adverse effect, and the adaptability to later engineering adjustments is poor; the track slab finishing is expensive; the construction cost is the highest

Method used

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  • Precast slab type ballastless track structure
  • Precast slab type ballastless track structure
  • Precast slab type ballastless track structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1: see image 3 , Figure 4 and Figure 6 . This embodiment is composed of a steel rail 1, a fastener, a prefabricated track slab 2, an adjustment layer 3, and a reinforced concrete base 4. Wherein, the prefabricated track slab 2 is located on the base 4, and self-compacting concrete is filled between the base and the track slab as an adjustment layer 3, and steel mesh sheets are arranged therein. The prefabricated track slab 2 has a unit block structure along the longitudinal direction, and transverse gaps 7 are provided between adjacent prefabricated track slab units. The base 4 is also a unit block structure in the longitudinal direction, and a transverse gap 8 is provided between adjacent base units. Each base unit is provided with at least one prefabricated track plate unit. The base unit of this embodiment is provided with two A prefabricated track slab unit. The transverse gaps 7 between adjacent prefabricated track slab units and the transverse g...

Embodiment 2

[0068] Example 2: see image 3 , Figure 5 and Figure 6 . This embodiment is basically the same as Embodiment 1, except that a groove 6 is provided on the lower surface of the prefabricated track plate 2, and a boss 5 is set on the base 4 corresponding to the groove 6 on the prefabricated track plate. 5 cooperates with groove 6.

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Abstract

The invention discloses a precast slab type ballastless track structure. The structure comprises a steel rail (1), fasteners, a precast track slab (2), an adjusting layer (3) and a base (4). The structure is characterized in that: the bottom of the track slab is provided with limiting lug bosses (5) or limiting grooves (6), and the number of the limiting lug bosses (5) or the limiting grooves (6) is single or many. The structure has reasonable stress and good stability and durability, and can fully exert the functions of high strength and high rigidity of the track slab, lighten the longitudinal temperature stress of the track slab and meet the requirements of high smoothness and high stability of rail transit such as railways, light rails, subways and the like.

Description

technical field [0001] The invention relates to a railway track structure system, in particular to a prefabricated slab-type ballastless track structure, which is suitable for laying ballastless tracks on railway subgrades, bridges and tunnel sections such as railways, light rails and subways. Background technique [0002] At present, the types of ballastless track widely used in railway engineering mainly include CRTS I double-block ballastless track, CRTS I slab ballastless track, CRTS II slab ballastless track and CRTSIII slab ballastless track. [0003] (1) CRTS I double-block ballastless track is composed of steel rails, fasteners, double-block sleepers, track bed plates, supporting layers / base plates, etc. CRTS I double-block ballastless track has high integrity, and can continue to use the design and manufacturing technology of sleepers, and the cost is relatively low. CRTS I double-block ballastless track cast-in-situ track bed slab and prefabricated sleepers are pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00
Inventor 孙立王森荣张珍珍陈潇
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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