高速铁路接触网提速改造策略探讨

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Abstract Research purposes: Compared with the newly built high-speed railway, the catenary system of the existing and operational high-speed railway is more difficult and complex in the design, construction and operation of speed-upgrade improvement, with strong system correlation, variable parameters, difficult demonstration, high construction and operation risk, and lack of systematic and standard methods and ideas. Based on the example of the speed-upgrade improvement project from 300 km/h to 350 km/h in the passenger transport line between Chengdu and Chongqing, this paper comprehensively analyzed the difficulties and challenges faced in the project. From the aspects of the feasibility analysis, system performance improvement, equipment performance, construction safety and quality improvement, construction operations process and engineering inspection, the requirements and corresponding strategies of the whole process before, during and after the speed improvement were studied and put forward respectively, forming the technical route of the speed-up improvement of the high-speed catenary, and providing ideas and templates for the formation of the complete technical system of the existing and operational high-speed catenary.
Research conclusions: (1) Based on the service characteristics of the catenary, the difficulties and challenges faced are put forward. (2) Based on the target demand and operation status, the technical routes are established for the speed-up improvement of the existing catenary. (3) The improvement strategy is put forward in the design, construction and operation stage. (4) The research results can provide guidance for the speed-upgrade construction of rail transit.

Key words： existing and operational high-speed railway catenary speed-upgrade improvement strategy risk

Received: 08 December 2021

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U225

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	Articles by authors
	YANG Jia
	LU Xiaobing
	GUAN Jinfa

Cite this article:

YANG Jia,LU Xiaobing,GUAN Jinfa. Exploration on the Speed-upgrade Improvement Strategy of High-speed Railway Catenary[J]. Journal of Railway Engineering Society, 2022, 39(2): 85-89.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I2/85

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