The invention relates to an assembled concrete bridge pier. When a cover beam is assembled with the assembled concrete bridge pier, positioning is carried out through a first magnetic rod and a secondmagnetic rod generally; along with descending of the cover beam, a clamping block is matched with a curved surface ring, and displacement of a circular column in a vertical direction is limited; along with extrusion of an elastic column pin, a rotating plate is driven by the circular column to drive a driving gear to rotate, then a right angle inverted trapezoidal block is matched with an inclined surface ring, the circular column is tightly clamped in a horizontal direction, the cover beam can be very well positioned, displacement of the cover beam in a horizontal direction and a vertical direction can be also limited, and a very good effect in resisting earthquake of different grades can be achieved; while the cover beam descends, a horizontal displacement limiting device and a verticaldisplacement limiting device can be also driven by the driving gear, the cover beam can be further limited in the horizontal direction and the vertical direction after being assembled and positioned,the overall earthquake resistance and reduction effect can be improved, and the assembled concrete bridge pier is efficient, convenient and rapid to assemble, and has very good earthquake resistanceand reduction effects.