The Research On Construction Technology Of Various Track Structures Of Urban Rail Transit Engineering

Based on Huang Zhou-Xin Shi Qu Jian section of Guangzhou rail transit as a case, this thesis wants to research the general construction problems faced by track construction. The Huang Zhou-Xin Shi Qu Jian section of Guangzhou rail transit has the characteristics of more track structures and bigger limiting gradient.In order to propose the solutions,this thesis analysed the structural characteristics of various track structures, the existing construction method and the construction technology. The main work is as follows:Fiist, by analyzing the characteristics of track structures and the construction technology, the mothod through using additional benchmark to ensure the construction precision of the transitions between different track structures and hybrid construction is put forward.Second, according to the problem of the bigger limiting gradient between Xiao gu wei to Xin zhao(50‰和38‰),by testing and calculating the tractive ability of Gantry Crane for track laying,this thesis determined the solution by using two Gantry Cranes for track laying to finish the work of laying track panel to the position accurately.Third, according to the characteristics of the project, we determined the positon of bases for track laying according to the setting principles of bases for track laying. The efficiency of construction showed that the positon of bases for track laying are correct and transportation is convenient.In accordance with the actual effect of the project, the scheme adopted in this thesis is practicable and the construction technology is scientific and reasonable. The construction quality and progress is ensured. The work we do has some certain reference value to the construction of rail transit engineering.