1　Overview of Structure for CRTSⅠ Slab Ballastless Track

CRTSⅠ slab ballastless track is comprised of steel rail，elastic separated rail fastening，stuffing base plate，track slab，cement-emulsified asphalt mortar adjustment layer，concrete base，convex blocking mound and stuffed resin nearby，etc.

CRTSⅠ track slab consists of different structures like，prestressed flat plate（P），prestressed frame plate（KJ）and reinforced concrete frame plate（PF）.The application scope of different track slabs see Table 1.This chapter is based on the construction application of CRTSⅠ track slab to the Beijing-Shanghai high-speed railway.Due to the climate condition of the regions run through by the Beijing-Shanghai high-speed railway is cold regions and warm regions，post-tensioning method prestressed flat plate structure is adopted，i.e.P model track slab.

Table 1　Application Scope of CRTSⅠ Different Track Slabs

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