现在在桥梁施工中基础大多采用钻孔桩基础,钻孔桩在钻进和成孔后依靠孔内的泥浆压力保持孔壁周围土体的稳定,而列车由于动力荷载明显,其振动产生的效应对钻孔桩内泥浆和土体形成的压力稳定系统会产生破坏,从而使钻孔桩内孔壁两侧的压力失稳, At present, most of the foundations in the bridge construction use the bored pile foundation. The bored piles maintain the stability of the soil around the hole wall by relying on the mud pressure in the bored hole after drilling and forming the hole. However, due to the obvious dynamic load, the train vibration effect The pressure stability system formed by the mud and soil in the bored pile will be destroyed, so that the pressure on both sides of the borehole wall in the bored pile will be instable,