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A platform for research: civil engineering, architecture and urbanism
Accurate lifting method for settlement ballastless crossover turnout of operating high-speed rail
The invention discloses an accurate lifting method for a settlement ballastless crossover turnout of an operating high-speed rail. The method comprises the steps that the lifting range and the lifting amount of the ballastless crossover turnout are determined, and strain gauges and grouting filling holes are distributed; grouting lifting holes are formed in a non-double-line integral structure section of the turnout in a left-right asymmetrical zigzag mode at intervals in the line direction; grouting lifting holes are formed in the double-line overall structure section at intervals in a rectangular shape; zoning according to turnout switch, connection, frog and crossover parts, and selecting adaptive grouting materials to lift each zone; concrete tensile strain at different parts of the turnout is monitored, and the lifting sequence and height are adjusted according to the concrete tensile strain, so that the turnout concrete does not crack; after lifting is completed, the turnout is debugged, and if work cannot be carried out, local supplementary lifting is carried out till the turnout works normally; and after the grouting filling hole is lifted to the target line shape, the grouting filling hole is filled with a high-fluidity low-expansibility grouting material. The problem that ballastless crossover turnout lifting precision control is poor is solved, the structural stability of the lifted track is guaranteed, and normal work of the turnout and on-time traffic of the next day are not affected.
本发明公开了一种运营高铁沉降无砟渡线道岔精准抬升方法，包括确定无砟渡线道岔抬升范围和抬升量，布设应变片和注浆填充孔；道岔的非双线整体结构区段沿线路方向按左右非对称之字形间隔设注浆抬升孔；双线整体结构区段按矩形间隔设注浆抬升孔；按道岔转辙、连接、辙叉和渡线部划区，选择相适应的注浆材料对各区抬升；监控道岔不同部位混凝土拉应变，据此调整抬升顺序和高度，使道岔混凝土不开裂；抬升完成后调试道岔，若无法工作，则进行局部补抬，直至道岔正常工作；抬升至目标线形后，向注浆填充孔内填充高流动性低膨胀性注浆材料。本发明解决了无砟渡线道岔抬升精度控制差难题，保证抬升后轨道结构稳定性，不影响道岔正常工作及次日准点通车。
Accurate lifting method for settlement ballastless crossover turnout of operating high-speed rail
The invention discloses an accurate lifting method for a settlement ballastless crossover turnout of an operating high-speed rail. The method comprises the steps that the lifting range and the lifting amount of the ballastless crossover turnout are determined, and strain gauges and grouting filling holes are distributed; grouting lifting holes are formed in a non-double-line integral structure section of the turnout in a left-right asymmetrical zigzag mode at intervals in the line direction; grouting lifting holes are formed in the double-line overall structure section at intervals in a rectangular shape; zoning according to turnout switch, connection, frog and crossover parts, and selecting adaptive grouting materials to lift each zone; concrete tensile strain at different parts of the turnout is monitored, and the lifting sequence and height are adjusted according to the concrete tensile strain, so that the turnout concrete does not crack; after lifting is completed, the turnout is debugged, and if work cannot be carried out, local supplementary lifting is carried out till the turnout works normally; and after the grouting filling hole is lifted to the target line shape, the grouting filling hole is filled with a high-fluidity low-expansibility grouting material. The problem that ballastless crossover turnout lifting precision control is poor is solved, the structural stability of the lifted track is guaranteed, and normal work of the turnout and on-time traffic of the next day are not affected.
本发明公开了一种运营高铁沉降无砟渡线道岔精准抬升方法，包括确定无砟渡线道岔抬升范围和抬升量，布设应变片和注浆填充孔；道岔的非双线整体结构区段沿线路方向按左右非对称之字形间隔设注浆抬升孔；双线整体结构区段按矩形间隔设注浆抬升孔；按道岔转辙、连接、辙叉和渡线部划区，选择相适应的注浆材料对各区抬升；监控道岔不同部位混凝土拉应变，据此调整抬升顺序和高度，使道岔混凝土不开裂；抬升完成后调试道岔，若无法工作，则进行局部补抬，直至道岔正常工作；抬升至目标线形后，向注浆填充孔内填充高流动性低膨胀性注浆材料。本发明解决了无砟渡线道岔抬升精度控制差难题，保证抬升后轨道结构稳定性，不影响道岔正常工作及次日准点通车。
Accurate lifting method for settlement ballastless crossover turnout of operating high-speed rail
一种运营高铁沉降无砟渡线道岔精准抬升方法
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)
2022-06-03
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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