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A platform for research: civil engineering, architecture and urbanism
Accurate lifting method for settlement ballastless single turnout of operating high-speed rail
The invention discloses an accurate lifting method for a settlement ballastless single turnout of an operating high-speed rail. The method comprises the steps that the lifting range and the lifting amount of the ballastless turnout are determined, and strain gauges are laid; grouting lifting holes are distributed at intervals in a non-bilateral symmetry zigzag mode; zoning is carried out according to the switch, connection and frog parts of the ballastless turnout, and corresponding different expansion grouting materials are selected to lift each section; during grouting lifting, a triangle formed by a zigzag shape serves as a lifting unit, two points are lifted in the line direction, and then the remaining point is lifted; concrete tensile strain conditions of different parts of the turnout are monitored, and the lifting sequence and the single-point lifting height are adjusted at any time; after lifting is completed, the turnout is operated, and if the turnout cannot work, local supplementary lifting is conducted according to the elevation data; and after the roadbed slab is lifted to the target line shape, grouting materials are poured into the grouting filling holes in the two sides of the roadbed slab, and grouting filling is completed. The problem that ballastless single turnout lifting precision control is poor can be solved, the rail structure stability after lifting is guaranteed, and it is guaranteed that normal work of the turnout and on-time traffic on the next day are not affected by lifting.
本发明公开了一种运营高铁沉降无砟单开道岔精准抬升方法，包括确定无砟道岔抬升范围和抬升量，铺设应变片；按非左右对称之字形间隔布设注浆抬升孔；按无砟道岔转辙、连接和辙叉部分进行划区，选择相应的不同膨胀注浆材料对各区段抬升；注浆抬升以之字形构成的三角为一个抬升单元，先沿线路方向抬升两点，再抬升剩余一点；监控道岔不同部位混凝土拉应变情况，随时调整抬升顺序和单点抬升高度；抬升完成后，操动道岔，若无法工作，根据高程数据局部补抬；抬升至目标线形后，向道床板两侧注浆填充孔灌注浆材料，完成注浆填充。本发明可解决无砟单开道岔抬升精度控制差难题，保证抬升后轨道结构稳定性，确保抬升不影响道岔正常工作及次日准点通车。
Accurate lifting method for settlement ballastless single turnout of operating high-speed rail
The invention discloses an accurate lifting method for a settlement ballastless single turnout of an operating high-speed rail. The method comprises the steps that the lifting range and the lifting amount of the ballastless turnout are determined, and strain gauges are laid; grouting lifting holes are distributed at intervals in a non-bilateral symmetry zigzag mode; zoning is carried out according to the switch, connection and frog parts of the ballastless turnout, and corresponding different expansion grouting materials are selected to lift each section; during grouting lifting, a triangle formed by a zigzag shape serves as a lifting unit, two points are lifted in the line direction, and then the remaining point is lifted; concrete tensile strain conditions of different parts of the turnout are monitored, and the lifting sequence and the single-point lifting height are adjusted at any time; after lifting is completed, the turnout is operated, and if the turnout cannot work, local supplementary lifting is conducted according to the elevation data; and after the roadbed slab is lifted to the target line shape, grouting materials are poured into the grouting filling holes in the two sides of the roadbed slab, and grouting filling is completed. The problem that ballastless single turnout lifting precision control is poor can be solved, the rail structure stability after lifting is guaranteed, and it is guaranteed that normal work of the turnout and on-time traffic on the next day are not affected by lifting.
本发明公开了一种运营高铁沉降无砟单开道岔精准抬升方法，包括确定无砟道岔抬升范围和抬升量，铺设应变片；按非左右对称之字形间隔布设注浆抬升孔；按无砟道岔转辙、连接和辙叉部分进行划区，选择相应的不同膨胀注浆材料对各区段抬升；注浆抬升以之字形构成的三角为一个抬升单元，先沿线路方向抬升两点，再抬升剩余一点；监控道岔不同部位混凝土拉应变情况，随时调整抬升顺序和单点抬升高度；抬升完成后，操动道岔，若无法工作，根据高程数据局部补抬；抬升至目标线形后，向道床板两侧注浆填充孔灌注浆材料，完成注浆填充。本发明可解决无砟单开道岔抬升精度控制差难题，保证抬升后轨道结构稳定性，确保抬升不影响道岔正常工作及次日准点通车。
Accurate lifting method for settlement ballastless single turnout of operating high-speed rail
一种运营高铁沉降无砟单开道岔精准抬升方法
ZHENG XINGUO (author) / LIU JING (author) / LI SHUMING (author) / DOU DONGBIN (author) / CAI DEGOU (author) / DAI ZONGLIN (author) / ZHANG CHI (author) / XIE YONGJIANG (author) / YAO JIANPING (author) / LOU LIANGWEI (author)
2022-05-27
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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