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Ballastless track structure with lateral dynamic load balance on sleeper side

A ballastless track and dynamic load technology, applied in the field of ballastless track structure, can solve the problems of insufficient construction space of the ditch, intrusion of the track pipe into the ditch, inconvenience and hidden dangers of construction and maintenance, and achieve convenient drainage and pipeline passing track, reducing the width of the ballast bed, and saving track construction materials

Active Publication Date: 2018-11-23
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to uncertain factors such as construction errors, the construction space of the ditch is often insufficient, or the track pipe invades the ditch, which brings inconvenience and hidden dangers to construction and maintenance.

Method used

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  • Ballastless track structure with lateral dynamic load balance on sleeper side
  • Ballastless track structure with lateral dynamic load balance on sleeper side
  • Ballastless track structure with lateral dynamic load balance on sleeper side

Examples

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] refer to figure 1 and figure 2 The existing ballastless track structure includes a ballast bed 10 and sleepers 20 arranged at intervals along the line extension direction. The sleeper 20 is a prefabricated reinforced concrete member, and its lower part is embedded in the ballast bed 10 when the cast-in-place track bed 10 is formed, and forms a closed pit around it. The cross-section of the sleeper 20 along its longitudinal direction is a constant cross-section type, and the joint surface between the two ends and the pit of the ballast bed 10 forms a bearing surface to bear the transverse dynamic load. Its disadvantage is that the width of the ballast bed 10 is relatively large, which affects the setting of drains and pipelines, and it is not possible to increase the space and reduce the cost of the project by reducing the lateral width of the b...

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PUM

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Abstract

The invention provides a ballastless track structure capable of balancing a transverse dynamic load through the side faces of sleepers to effectively decrease the width of a ballast bed, to lower the construction cost of a project, and to provide a sufficient space for ballast bed water drainage and railway crossing of pipelines. The ballastless track structure comprises the ballast bed and the sleepers arranged in the extending direction of a line at intervals. The lower portions of the sleepers are embedded into grooves formed in the ballast bed when sinking into the cast-in-situ ballast bed. The cross sections of the sleepers are in a variable-section shape in the longitudinal direction of the sleepers. The front side faces and the rear side faces of the sleepers are tightly attached to the side walls of the grooves where the sleepers are embedded form a bearing face for the transverse dynamic load.

Description

technical field [0001] The invention relates to a ballastless track, in particular to a ballastless track structure for balancing lateral dynamic loads on the sides of sleepers. Background technique [0002] Ballastless track has the advantages of high stability, less maintenance, and long service life. It has been widely used in urban rail, subway, passenger dedicated line, high-speed railway and other rail transportation at home and abroad. Both the sleeper and the ballast bed adopt reinforced concrete structure, and the sleeper is buried inside the ballast bed. The dynamic load of the train is transmitted to the sleeper through the rails and fasteners, and the tight combination of the sleeper and the ballast bed balances the longitudinal, lateral and vertical dynamic loads from the fastener system. [0003] At present, reinforced concrete sleepers can be divided into short sleepers and long sleepers. Long sleepers are generally used in conjunction with full-paved track b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B2/00E01B3/00
CPCE01B2/00E01B3/00
Inventor 和振兴王小韬刘德志陈罄超
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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