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Immersed embankment structure of high-speed railway in seasonal frozen soil area and construction method
The invention discloses an immersed embankment structure of a high-speed railway in a seasonal frozen soil area. The embankment structure comprises an upper embankment, a lower embankment, cast-in-situ bored piles, an elastic supporting layer and a bearing device. The lower embankment is filled at the upper end of the foundation; the upper embankment is positioned at the upper end of the lower embankment; the elastic supporting layer is positioned at the top of the upper embankment; the bearing device is located at the top of the elastic supporting layer, the number of the cast-in-situ bored piles is at least two, the at least two cast-in-situ bored piles are longitudinally arranged in the foundation at intervals in rows along a line, the at least two rows of cast-in-situ bored piles are transversely arranged along the line, and the tops of the cast-in-situ bored piles extend out of the foundation and are fixedly connected with the bearing device. The cast-in-situ bored pile supports the bearing device. When the lower embankment deforms due to frost heaving, the elastic supporting layer contracts and deforms to reduce the influence of frost heaving force on the bearing device, theelastic supporting layer contracts and deforms to recover to provide surface supporting force for the bearing device when frost heaving does not occur, and therefore engineering investment of the bearing device is saved, and the structure has good upwarp deformation resistance.
本发明公开了一种季节性冻土区高速铁路浸水路堤结构，包括上部路堤、下部路堤、钻孔灌注桩、弹性支撑层、承载装置，下部路堤填筑在地基上端，上部路堤位于下部路堤的上端，弹性支撑层位于上部路堤的顶部，承载装置位于弹性支撑层的顶部，钻孔灌注桩的数量为至少两个，至少两个钻孔灌注桩沿线路纵向间隔成排设置在地基中，沿线路横向设有至少两排钻孔灌注桩，钻孔灌注桩顶部伸出地基并与承载装置固定相连。钻孔灌注桩支撑承载装置，下部路堤因冻胀发生变形时，弹性支撑层产生收缩变形来减小冻胀力对承载装置的影响，并在非冻胀时弹性支撑层收缩变形恢复为承载装置提供面支撑力从而节约承载装置的工程投资，使结构具有很好的抗上拱变形能力。
Immersed embankment structure of high-speed railway in seasonal frozen soil area and construction method
The invention discloses an immersed embankment structure of a high-speed railway in a seasonal frozen soil area. The embankment structure comprises an upper embankment, a lower embankment, cast-in-situ bored piles, an elastic supporting layer and a bearing device. The lower embankment is filled at the upper end of the foundation; the upper embankment is positioned at the upper end of the lower embankment; the elastic supporting layer is positioned at the top of the upper embankment; the bearing device is located at the top of the elastic supporting layer, the number of the cast-in-situ bored piles is at least two, the at least two cast-in-situ bored piles are longitudinally arranged in the foundation at intervals in rows along a line, the at least two rows of cast-in-situ bored piles are transversely arranged along the line, and the tops of the cast-in-situ bored piles extend out of the foundation and are fixedly connected with the bearing device. The cast-in-situ bored pile supports the bearing device. When the lower embankment deforms due to frost heaving, the elastic supporting layer contracts and deforms to reduce the influence of frost heaving force on the bearing device, theelastic supporting layer contracts and deforms to recover to provide surface supporting force for the bearing device when frost heaving does not occur, and therefore engineering investment of the bearing device is saved, and the structure has good upwarp deformation resistance.
本发明公开了一种季节性冻土区高速铁路浸水路堤结构，包括上部路堤、下部路堤、钻孔灌注桩、弹性支撑层、承载装置，下部路堤填筑在地基上端，上部路堤位于下部路堤的上端，弹性支撑层位于上部路堤的顶部，承载装置位于弹性支撑层的顶部，钻孔灌注桩的数量为至少两个，至少两个钻孔灌注桩沿线路纵向间隔成排设置在地基中，沿线路横向设有至少两排钻孔灌注桩，钻孔灌注桩顶部伸出地基并与承载装置固定相连。钻孔灌注桩支撑承载装置，下部路堤因冻胀发生变形时，弹性支撑层产生收缩变形来减小冻胀力对承载装置的影响，并在非冻胀时弹性支撑层收缩变形恢复为承载装置提供面支撑力从而节约承载装置的工程投资，使结构具有很好的抗上拱变形能力。
Immersed embankment structure of high-speed railway in seasonal frozen soil area and construction method
一种季节性冻土区高速铁路浸水路堤结构及构筑方法
YAO YUCHUN (author) / XIAO CHAOQIAN (author) / FENG ZHIJUN (author) / ZENG YONGHONG (author) / ZHANG YAO (author) / FANG LIFENG (author)
2020-06-05
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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