Ballastless track railway expansive soil cutting structure and construction method

• Main Authors: YAO YUCHUN, ZENG YONGHONG, XU YOUDING, LI ANHONG, XIAO CHAOQIAN
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2017
• Subjects: CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS; PERMANENT WAY; PERMANENT-WAY TOOLS

The invention discloses a ballastless track railway expansive soil cutting structure and a construction method. The ballastless track railway expansive soil cutting structure and the construction method effectively solve the problem of upwarp deformation caused when a high-speed ballastless track railway passes through expansive soil cutting, and meet the requirement of the high-speed railway on the line smoothness. The structure comprises cement fly ash gravel piles, elastic geotechnical profiles, a cushion layer structure, a foundation bed bottom layer, a foundation bed surface layer and drainage side ditches, wherein the cement fly ash gravel piles are transversely and longitudinally arranged in an expansive soil foundation in rows at intervals to form a composite foundation, and the setting depths exceed the expansive soil atmospheric influence depth; the elastic geotechnical profiles are arranged in the surface layer of the expansive soil foundation between every two adjacent transverse rows of cement fl