Installation construction method of electrified railway contact network anchored section joint hanger

Abstract

The invention relates to a construction method of an electrified railway, in particular to an installation construction method of an electrified railway contact network anchored section joint hanger, which is characterized by comprising the specific steps of: preparing for construction, regulating an offset value of a cantilever along a line, regulating high conductivity and spacing between carrier cables, regulating a positioning position, measuring and calculating an anchored section joint hanger, prefabricating and installing the hanger, and testing and checking a site. The method providesa construction method for accurate installation of the electrified railway contact network anchored section joint hanger without secondary regulation, and the space structure and the stress state of the anchored section joint hanger can completely reach the design and construction standard requirement, thus the hanger in a contact network anchored section joint is installed once.

Description

technical field [0001] The invention relates to a construction method for an electrified railway, in particular to a construction method for installing and installing strings for the anchor section joints of an electrified railway catenary. Background technique [0002] In the electrified railway, in order to meet the segmentation requirements of power supply and machinery, the catenary is divided into several segments with a certain length and independent of each other, and each segment is called an anchor segment. The junction of two adjacent anchor segments is called the anchor segment joint. According to the role played by the anchor section, it can be divided into electrically segmented non-insulated anchor segment joints and electrically segmented insulated anchor segment joints: according to the number of spans included, it can be divided into three-span, four-span, five-span and other types of anchor segments joint. At present, four-span and five-span anchor joints...

AI Technical Summary

Problems solved by technology

At present, there are generally four methods used in domestic actual construction: one is the pure parabola method, that is, the catenary cable and the wire are regarded as ideal parabolas, and the calculation is performed by deriving formulas. Although this method is simple, it lacks accuracy; The second is the straight line method, that is, the wire in the joint of the anchor section is raised according to a straight line for calculation, so that the force on the hanging string will be uneven, and in some cases even the force will not be applied, and the height of the anchor point is difficult to guarantee; The third method is to use the rope simulation method, which is relatively simple, but the physical characteristics of the rope cannot replace the contact wire after all, and cannot reflect the real force of the hanging string, so it also lacks accuracy; the fourth method It is a method of direct adjustment on site. Since the adjustment is repeated, this method is not only low in work efficiency, but also difficult to control the force of the hanging string and difficult to guarantee the quality

And domestic related patents, although related to the content of the present invention, only solved the general problem, did not solve the technical problem of installation and construction of catenary anchor joint hanging string

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