Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Roadbed structure suitable for heavy haul railway in South Asia
The invention provides a roadbed structure suitable for heavy haul railways in South Asia. The roadbed structure is used for designing heavy haul railways with axle loads of 25t and 30t and comprises an embankment, a foundation bed bottom layer and a foundation bed surface layer which are sequentially arranged from bottom to top. Under the axle load of 25t, the thickness of the foundation bed surface layer is 0.45 mt, the compaction coefficient K is greater than or equal to 1.0, the secondary deformation modulus Ev2 is greater than or equal to 100MPa; the thickness of the foundation bed bottom layer is 1.0 m, the K is greater than or equal to 0.98, and the Ev2 is greater than or equal to 60MPa; and the K of the embankment is greater than or equal to 0.97, and the Ev2 is greater than or equal to 45MPa. Under the axle load of 30t, thickness of the foundation bed surface layer is 0.6 m, K is larger than or equal to 1.0, Ev2 is larger than or equal to 110 MPa; the thickness of the foundation bed bottom layer is 1.0 m, the compaction coefficient K is larger than or equal to 0.98, Ev2 is larger than or equal to 70 MPa; and the K of the embankment is larger than or equal to 0.97, and Ev2 is larger than or equal to 50 MPa. According to the geological characteristics and local national conditions of the South Asia region, the roadbed for the heavy haul railway, which meets local design requirements, meets performance requirements such as strength and the like and is low in construction cost, is developed, and the railway construction technology can be promoted.
本发明提供了一种适用于南亚地区重载铁路的路基结构，用于设计轴重25t和30t的重载铁路，包括从下至上依次设置的路堤、基床底层和基床表层，25t轴重下基床表层厚度为0.45m、压实系数K≥1.0、二次变形模量Ev2≥100MPa，基床底层厚度为1.0m、K≥0.98、Ev2≥60MPa，路堤K≥0.97、Ev2≥45MPa；30t轴重下基床表层厚度为0.6m、K≥1.0、Ev2≥110MPa，基床底层厚度为1.0m、压实系数K≥0.98、Ev2≥70MPa，路堤K≥0.97、Ev2≥50MPa。本发明依据南亚地区的地质特点和当地国情，开发了满足当地设计要求、满足强度等性能要求以及低建造成本的重载铁路路基，可促进铁路建筑技术的推动。
Roadbed structure suitable for heavy haul railway in South Asia
The invention provides a roadbed structure suitable for heavy haul railways in South Asia. The roadbed structure is used for designing heavy haul railways with axle loads of 25t and 30t and comprises an embankment, a foundation bed bottom layer and a foundation bed surface layer which are sequentially arranged from bottom to top. Under the axle load of 25t, the thickness of the foundation bed surface layer is 0.45 mt, the compaction coefficient K is greater than or equal to 1.0, the secondary deformation modulus Ev2 is greater than or equal to 100MPa; the thickness of the foundation bed bottom layer is 1.0 m, the K is greater than or equal to 0.98, and the Ev2 is greater than or equal to 60MPa; and the K of the embankment is greater than or equal to 0.97, and the Ev2 is greater than or equal to 45MPa. Under the axle load of 30t, thickness of the foundation bed surface layer is 0.6 m, K is larger than or equal to 1.0, Ev2 is larger than or equal to 110 MPa; the thickness of the foundation bed bottom layer is 1.0 m, the compaction coefficient K is larger than or equal to 0.98, Ev2 is larger than or equal to 70 MPa; and the K of the embankment is larger than or equal to 0.97, and Ev2 is larger than or equal to 50 MPa. According to the geological characteristics and local national conditions of the South Asia region, the roadbed for the heavy haul railway, which meets local design requirements, meets performance requirements such as strength and the like and is low in construction cost, is developed, and the railway construction technology can be promoted.
本发明提供了一种适用于南亚地区重载铁路的路基结构，用于设计轴重25t和30t的重载铁路，包括从下至上依次设置的路堤、基床底层和基床表层，25t轴重下基床表层厚度为0.45m、压实系数K≥1.0、二次变形模量Ev2≥100MPa，基床底层厚度为1.0m、K≥0.98、Ev2≥60MPa，路堤K≥0.97、Ev2≥45MPa；30t轴重下基床表层厚度为0.6m、K≥1.0、Ev2≥110MPa，基床底层厚度为1.0m、压实系数K≥0.98、Ev2≥70MPa，路堤K≥0.97、Ev2≥50MPa。本发明依据南亚地区的地质特点和当地国情，开发了满足当地设计要求、满足强度等性能要求以及低建造成本的重载铁路路基，可促进铁路建筑技术的推动。
Roadbed structure suitable for heavy haul railway in South Asia
适用于南亚地区重载铁路的路基结构
LIU MENGSHI (Autor:in) / HE GANG (Autor:in) / JIANG CHUSHENG (Autor:in) / YI XUPENG (Autor:in) / ZENG XI (Autor:in) / XIE QINGQUAN (Autor:in) / ZOU CHUAN (Autor:in) / LAN XIAOPING (Autor:in) / LI FEI (Autor:in) / HUANG XIANZHANG (Autor:in)
31.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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