Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Embedded track structure used in tunnel
The invention discloses an embedded track structure used in a tunnel. The embedded track structure comprises a prefabricated integral ballastless track slab, wherein rail ditches are respectively and longitudinally formed in the two sides of the top of the prefabricated integral ballastless track slab, and the remaining part of the upper surface of the prefabricated integral ballastless track slab is a plane; steel rails are arranged in the rail ditches in an embedding manner; and a plurality of noise reduction blocks are arranged at the two sides of the steel rails; transverse adjustment wedge-shaped blocks are arranged between the noise reduction blocks and the side walls of the rail ditches; the remaining space in the rail ditches is filled with macromolecular castables; a cavity is formed in the bottom of the prefabricated integral ballastless track slab, and the prefabricated integral ballastless track slab is arranged on a convex block at the top of a convex foundation; and self-compacting concrete is injected into gaps between the cavity and the convex block through injected holes in the integral ballastless track slab so as to fix the integral ballastless track slab and the convex foundation. The embedded track structure has the beneficial effects that the steel rails are of integral embedded type, conventional fasteners are no longer used, the overall height of a track system is lowered, and the embedded track structure facilitates the entrance of fire trucks and recovery vehicles.
Embedded track structure used in tunnel
The invention discloses an embedded track structure used in a tunnel. The embedded track structure comprises a prefabricated integral ballastless track slab, wherein rail ditches are respectively and longitudinally formed in the two sides of the top of the prefabricated integral ballastless track slab, and the remaining part of the upper surface of the prefabricated integral ballastless track slab is a plane; steel rails are arranged in the rail ditches in an embedding manner; and a plurality of noise reduction blocks are arranged at the two sides of the steel rails; transverse adjustment wedge-shaped blocks are arranged between the noise reduction blocks and the side walls of the rail ditches; the remaining space in the rail ditches is filled with macromolecular castables; a cavity is formed in the bottom of the prefabricated integral ballastless track slab, and the prefabricated integral ballastless track slab is arranged on a convex block at the top of a convex foundation; and self-compacting concrete is injected into gaps between the cavity and the convex block through injected holes in the integral ballastless track slab so as to fix the integral ballastless track slab and the convex foundation. The embedded track structure has the beneficial effects that the steel rails are of integral embedded type, conventional fasteners are no longer used, the overall height of a track system is lowered, and the embedded track structure facilitates the entrance of fire trucks and recovery vehicles.
Embedded track structure used in tunnel
LYU QIANG (Autor:in) / JIAO HONGLIN (Autor:in) / QIAN ZHENDI (Autor:in) / LUO JIONG (Autor:in) / YANG GANG (Autor:in) / LIU GUANGSHENG (Autor:in)
16.12.2015
Patent
Elektronische Ressource
Englisch
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
Subway tunnel embedded track scattered paving construction method
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2020