Method for reinforcing existing railway roadbed by adopting lime-soil piles

The invention discloses a method for reinforcing an existing railway roadbed by adopting lime-soil piles. The lime-soil piles are obliquely inserted into the existing railway roadbed along two side slopes of the roadbed, and the lime-soil piles inserted on both sides are crossed in the roadbed; the inclination angle of the lime-soil piles is 30-45 degrees, the pile diameter of the lime-soil pilesis 0.2-0.35 m, the pile length of the lime-soil piles is matched with the height of the existing railway roadbed, and the longitudinal pile spacing of the lime-soil piles is 3-4 times the pile diameter. The method optimizes the inclination angle, pile diameter, pile spacing and pile length of the lime-soil piles, improves the reinforcement efficiency and effect, and provides a powerful reference for summarizing the key technology of reinforcing the existing railway roadbed by the lime-soil piles. 本发明公开了采用灰土桩加固既有铁路路基的方法，所述灰土桩沿路基两侧边坡斜向插入既有铁路路基中，且两侧插入的灰土桩在路基内交叉；所述灰土桩的倾斜角度为30～45°，灰土桩的桩径为0.2～0.35m，灰土桩的桩长与既有铁路路基高度相匹配，灰土桩纵向桩