Railway portal frame bridge jacking limiting slideway

The utility model belongs to the technical field of bridge engineering, particularly relates to a jacking limiting slide way of a railway portal frame bridge, and provides the following scheme aiming at the problems that when an existing slide way is used for jacking construction, the limiting efficiency is poor, real-time observation needs to be carried out manually through an instrument, and early warning information feedback is lagged in the jacking process. A plurality of first check blocks and a plurality of second check blocks are arranged at the two ends of the top of the sliding way respectively, a plurality of ground beams are arranged at the bottom of the sliding way, reinforcing meshes are arranged in the sliding way, and reinforcing mesh frames are arranged in the first check blocks and the second check blocks. The guiding and limiting device is reasonable in design and easy to operate, the portal frame bridge can be effectively guided and limited through cooperation of the first check block, the