无砟轨道结构横向纠偏修复解离界面研究

Study on Dissociation Interface for Lateral Correction and Repair Techniques of Ballastless Track Structure

以易于纠偏为原则,基于解离界面与无砟轨道结构的相对位置关系特征,对不同线下基础的不同类型无砟轨道结构横向纠偏修复解离界面的选取进行了分析研究。结果表明:可选取轨道结构层间作为纠偏解离界面的结构有CRTS系列板式无砟轨道、双块式无砟轨道、板式无砟道岔;可选取轨道结构下部作为纠偏解离界面的结构有路基和有仰拱隧道区段的CRTSⅠ型板式无砟轨道,路基和隧道区段的CRTSⅡ型、CRTSⅢ型板式无砟轨道及双块式无砟轨道,路基区段无砟道岔。两种解离界面均适用时,优选对轨道结构损伤更小的基于轨道结构下部的解离界面。

Based on the principle of easy correction and the characteristics of the relative position relationship between the dissociation interface and the ballastless track structure,this paper analyzed the selection of the dissociation interface for lateral correction and repair of different types of ballastless track structures with different offline foundations.The results show that CRTS series slab ballastless track,double block ballastless track and slab ballastless turnout can take the interlayer of track structure as the correction dissociation interface.CRTS I slab ballastless track in subgrade and invert tunnel section,CRTSⅡ,CRTSⅢslab ballastless track and double block ballastless track in subgrade and tunnel section,and ballastless turnout in subgrade section can take the lower part of track structure as correction dissociation interface.When the two kinds of dissociation interfaces are applicable,the dissociation interface based on the lower part of the track structure with less damage to the track structure would be selected as the correction interface.