Accurate pre-distribution method of railway multi-type catenary hanging strings

Abstract

The invention relates to an accurate pre-distribution method of railway multi-type catenary hanging strings. The contact suspension has a plurality of types, the concentrated load distribution is nonuniform, the hanging string pre-distribution accuracy is directly influenced by complex line conditions, the pre-distribution methods are not uniform for hanging string pre-distribution programs of different suspension types, the operation is complex, and the field test period is long. The accurate pre-distribution method comprises the steps of standardizing the pre-distribution processes of catenary hanging strings of a plurality of types; acquiring design line-related data, design line vertical curve factor data, and hanging string pre-distribution measuring data; and inputting the design line-related data, inputting the design line vertical curve factor data for pre-distribution supplementation calculation, inputting the hanging string pre-distribution measuring data, establishing different calculation models according to different catenary working condition types, establishing a global stiffness matrix and a load matrix, forming a multidimensional linear equation set through combination, and solving to acquire an initial hanging string pre-distribution calculation result. According to the accurate pre-distribution method, the operability is high, the method integration level is high, the calculation speed is high, and the method is applicable to pre-distribution of rigid and flexible whole hanging strings.

Description

technical field [0001] The invention belongs to the technical field of railway catenary, and in particular relates to a method for accurately pre-assigning hanging strings of multiple types of railway catenary. Background technique [0002] The catenary is an important fixed facility for powering electrified railway locomotives. Its working conditions are related to the pantograph-catenary current receiving state and directly affect the safety and stability of train operation. At present, the overhead flexible catenary suspension methods commonly used in electrified railways include simple chain suspension and elastic chain suspension. In addition to the basic function of transmitting the self-weight and additional load of the contact line to the catenary cable, it also plays an important role in controlling the distance between the contact line and the rail surface, the slope of the contact line, and smoothness to meet the design requirements. The above parameters It will ...

AI Technical Summary

Problems solved by technology

Projects of different suspension types often require different types of hanging string preconfiguration methods, which will lead to cumbersome operation procedures and long field test cycles; if the calculation accuracy of hanging strings is poor, it will bring a lot of economic losses and construction adjustments, so Designing a high-precision, multi-working-condition, and highly-applicable hanging string pre-assembly method will be the key to the overall hanging string processing, adjustment and construction on site

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