Construction method for modifying head span of existing line of railway
The invention provides a construction method capable of safely and efficiently modifying a head span of an existing line. The method includes a measurement calculation and positioning step; a new strut establishment and correction step; a head span connection and installation step; a parameter measu...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
01.08.2012
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a construction method capable of safely and efficiently modifying a head span of an existing line. The method includes a measurement calculation and positioning step; a new strut establishment and correction step; a head span connection and installation step; a parameter measuring and rechecking step; and an old strut detachment step. Head span transitional modification is a difficult point of construction and modification of a contact net of the existing line. The construction method needs higher technical requirements on construction of the contact net, can finish modification of the head span of the existing line safely and efficiently, and provides an important guarantee for construction. |
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Bibliography: | Application Number: CN20111441176 |