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Physical isolation method of roadbed for maintenance of high-speed railway ballastless track

A technology of physical isolation and ballastless track, which is applied to roads, tracks, laying tracks, etc., to improve construction efficiency and save construction time

Active Publication Date: 2019-04-02
CHINA RAILWAY NO 3 GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems existing in the maintenance of the existing high-speed rail ballastless track, the present invention provides a physical isolation method for the maintenance roadbed of the high-speed rail ballastless track

Method used

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  • Physical isolation method of roadbed for maintenance of high-speed railway ballastless track
  • Physical isolation method of roadbed for maintenance of high-speed railway ballastless track
  • Physical isolation method of roadbed for maintenance of high-speed railway ballastless track

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Embodiment

[0017] Example: Installation of physical isolation facilities within the remediation range of a certain section of the high-speed railway undertaken by the applicant. Physical isolation is set between the two lines, 2.7m away from the center of the operating line and 2.3m away from the center of the maintenance line. The two ends of the isolation are set close to the tunnel entrance and the bridge head. The horizontal isolation enclosure is mainly used to isolate the roadbed maintenance and the traffic. interference.

[0018] The physical isolation between the lines is above 2.6m above the top surface of the closed layer, using a combination of color steel plate and steel wire mesh. The uprights are made of H-shaped steel uprights (100×100×6×8) with a distance of 2m. The size of the foundation is 80cm×80cm×90cm. After the foundation excavation is completed, the C30 concrete is put into the reinforcement cage, and M20 U-shaped anchor bolts and 8mm thick 30×30cm connecting steel p...

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Abstract

The invention belongs to the technical field of high-speed rail ballastless track maintenance, and provides a high-speed rail ballastless track maintenance roadbed physical isolating method aiming at solving the technical problem in the existing high-speed rail ballastless track maintenance. A physical isolation is arranged between an uplink and a downlink, is 2.7m away from the centre of an operating line, and is 2.3m away from the centre of a maintenance line; the height of the physical isolation is 2.6m above the top surface of a sealing layer; a colour steel plate and steel wire mesh combined structure is adopted. Transverse isolating sealing fences are arranged at the positions, close to a tunnel entrance and a bridge head, of the physical isolation. The high-speed rail ballastless track maintenance roadbed physical isolating method can perform large-area treatment without affecting traffic efficiency; when the physical isolation is detached, local overall movement is adopted to detach from a distance, so that the construction time is shortened, and the construction efficiency is improved.

Description

Technical field [0001] The invention belongs to the technical field of high-speed railway ballastless track maintenance, and specifically relates to a method for physical isolation of high-speed railway ballastless track maintenance subgrade. Background technique [0002] The ballastless track structure of high-speed railways in China is generally divided into two types: precast slab type and cast-in-place concrete type. Ballastless track mainly has six types of structure: profiled slab, profiled, profiled, double block, turnout slab, and sleeper embedded type. Since the first application of the Beijing-Tianjin Intercity Railway, the slab-type ballastless track structure with the longitudinally continuous ballastless bed along the line as the main structural feature has been popularized and applied on a large scale in our high-speed railway projects, and its proportion is relatively large. (Including Beijing-Shanghai, Shanghai-Hangzhou, Beijing-Guangzhou, Hangzhou-Changzhou, Hang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B29/00E01B1/00
CPCE01B1/00E01B29/00
Inventor 周秋来杜胜马义平赵卫广孙龙华申雪松郭进仓樊立志张伟赵增茂宁轲傅重阳成俊文王辉李英杰
Owner CHINA RAILWAY NO 3 GRP CO LTD