Construction method for passenger transport dedicated line bolster embedded large-size ballastless track

Abstract

The invention discloses a construction method of long sleeper buried ballastless turnouts with large size of a passenger transport dedicated line, which comprises: constructing turnouts region base concrete, surveying and setting out of the construction, binding rail bed plate bottom reinforcement, installing a turnout translation trolley, hanging turnout rail sections and unloading, pushing the translation trolley in the position and connecting turnout, coarsely adjusting the turnout, installing a regulation stent and dissembling the translation trolley, binding rail bed plate reinforcement and installing a formwork, fine adjusting and positioning the turnout, pouring rail bed plate concrete, adjusting the formwork and dissembling the stent, welding the turnout steel rail and dispersing stress and closing treatments. The method of the invention has the advantages that the installed long sleeper buried ballastless steel rail panel of the passenger transportation dedicated line is stable and free from deformation; the rail concrete meets the requirements of China made rail circuit transmission; the rail is linear and is provided with high regularity and high accuracy of construction surveying and controlling; steel rail welding joint is of good quality and high regularity.

Description

technical field

[0001] The invention relates to a method for laying a railway track, in particular to a construction method for a long sleeper embedded large ballastless turnout specially used for passenger dedicated lines. Background technique

[0002] The turnout structure of the locomotive track includes base concrete, track bed slab concrete, turnout sleepers, fastener systems and rails from bottom to top.

[0003] The long sleeper embedded large ballastless turnout of the passenger dedicated line has the following characteristics:

[0004] (1) The rail components are long, the assembly precision is high, and the rail row transportation is difficult. The longest part of the turnout can usually reach 30 meters to 55 meters. The pre-assembled rail row has high requirements for transportation roads, transportation vehicles, and hoisting equipment. The process of transportation, hoisting, and assembly should ensure that the turnout rail row is stable and does not deform. ...

Images