Research on Key Technology of Catenary Soft Span Construction Under Bad Weather Condition
Based on the analysis of the particularity of catenary soft span construction under bad weather conditions,and combined with the relevant technical parameters,influence factors and practical engineering characteristics,the key technology principle of catenary soft span construction under bad weather conditions is emphatically studied,and the key technology of construction under bad weather conditions is put forward.The soft span model of catenary is established,and the fixed measurement of the relevant parameters such as the length of the positioning cable at the upper and lower part of the soft span,and the vertical suspension string length,are completed by determining the parameters of the soft span infrastructure,calculating and measuring the horizontal tension and the lowest suspension point of the horizontal bearing cable and measurement and calculation of the reference point of the rail plane.The mathematical calculation models are established,relevant calculation and verification formulas are derived,and specifications,models,and installation combination parameters of wire parts,components,etc.are determined.At the same time,the development of data measurement tools and cold slip detection devices has effectively improved the engineering measurement,construction and testing accuracy under harsh weather conditions.
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