铁路隧道内接触网预埋槽道标准的优化探讨

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Abstract Research purposes: There are great disputes on the design service life and anti-corrosion treatment method of carbon steel channel of OCS anchor channel in railway tunnel, which makes it difficult to implement Anchor Channel for Overhead Contact System in Electrified Railway TB/T 3329—2013. Through the investigation and technical analysis of the requirements of relevant railway standards at home and abroad, this paper comprehensively compares the three anti-corrosion schemes of hot-dip galvanizing, co-permeating-passivating-coating anticorrosion (PCA), hot dip galvanizing + surface coating from railway standard support, inspection test pass, engineering application, environmental protection, energy conservation and anti-corrosion production cost, and finds out the solutions.
Research conclusions: (1) The design service life of the channel is related to the environmental corrosion grade, and there is no direct quantitative conversion relationship with the corrosion resistance of the channel anti-corrosion coating. (2) The designed service life of the channel shall meet the design life requirements of the OCS system operation department for the channel, or it shall be divided into three grades of 30 years, 50 years and 100 years according to the importance grade of the tunnel OCS for selection of specific engineering construction projects. (3) The comprehensive comparison of three anti-corrosion schemes of hot-dip galvanizing, PCA and hot-dip galvanizing + surface coating shows that PCA scheme is the best. (4) PCA anti-corrosion treatment process is added to TB/T 3329—2013 standard to meet the engineering requirements. (5) The research results can provide reference for the revision of TB/T 3329—2013 standard and the design, manufacture, operation and maintenance of OCS anchor channel in railway tunnel.

Key words： railway tunnel contact line channel standard optimization

Received: 06 August 2021

PACS:

U231.8

	Service

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	ZHU Feixiong
	WANG Tao

Cite this article:

ZHU Feixiong,WANG Tao. Optimization Discussion of Anchor Channel Standard for Overhead Contact Line in Railway Tunnel[J]. Journal of Railway Engineering Society, 2022, 39(5): 98-101.

URL:

https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I5/98

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