A Method for Replacing the Whole Hanging String of Whole Anchor Section of 350km/h High-speed Railway Catenary

Abstract

A method for replacing the whole anchor section of the high-speed railway catenary operating at a speed of 350km / h, belonging to the technical field of high-speed railway operation renewal and transformation, including calculation parameter measurement of the suspension string, electrical inspection and grounding, simultaneous tensioning at both ends of the contact line, and the entire anchor section Replacing the overall hanging string, re-testing various parameters, fine-tuning and eliminating defects, checking and accepting horizontally on the Internet, and removing the ground wire and writing it down are eight steps. The calculation parameter measurement of the hanging string is carried out in the first skylight point. Electrical grounding, simultaneous tensioning at both ends of the contact wire, replacement of the overall suspension string for the entire anchor section, retesting of various parameters, fine adjustment and elimination of deficiencies, acceptance of horizontal pushing on the Internet, and removal of the ground wire and write-off are carried out in the second skylight point. The invention realizes the replacement of the overall suspension string of the high-speed railway catenary for the entire anchor section and even the entire passenger line of nearly 300 kilometers of main line under the condition of 350km / h operating high-speed railway with no speed limit. At the same time, a complete set of construction methods for the entire anchor section or more replacement of the overall hanging string under the condition of 350km / h high-speed rail operation with no speed limit has been formed for reference and even direct application.

Description

technical field [0001] The invention belongs to the field of renewal and transformation of high-speed railway operation, and relates to a technology for replacing the overall hanging string of a high-speed railway catenary, in particular to a method for replacing the integral hanging string of the entire anchor section of the high-speed railway operating at a speed of 350 km / h. Background technique [0002] At present, the operating mileage of China's high-speed rail has reached 35,000 kilometers, and the operating mileage and speed rank first in the world. According to the latest planning outline of China Railway Group, by 2035, the mileage of China's high-speed rail will reach 70,000 kilometers, and all cities with a population of more than 500,000 will have to Access to high-speed rail, the convenience of high-speed rail travel is loved by the public. [0003] In order to take advantage of the fast speed of the high-speed rail, the frequency of high-speed rail trains is r...

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Problems solved by technology

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method for replacing the whole anchor section of the catenary catenary with a speed of 350km / h in operation, which is used to solve the problem of replacing the whole anchor section of the high-speed railway in the prior art. When hanging strings or other reconstruction operations with a large influence range, it is necessary to adopt a speed limit or deceleration operation method to ensure safety, resulting in technical problems such as low-speed high-speed rail, reduced utilization efficiency of high-speed rail resources, and a significant drop in high-speed rail transportation capacity

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