Shield launching well reaction frame stress structure

The utility model provides a shield launching well reaction frame stress structure which comprises a reaction frame body, a plurality of anchor cable structures are arranged on frames on the two sides of the reaction frame body in a penetrating mode, and anchorage devices used for fixing the tail ends of the anchor cable structures are arranged on the back face of the reaction frame body. The front end of the anchor cable structure extends to the front side of the reaction frame body and is fixedly connected into the side wall of the launching well. A reaction frame body, an inclined supporting rod and an anchor cable structure are arranged, the reaction frame body is erected behind a shield tunneling machine, the rear side of a stand column of the reaction frame body is supported by the inclined supporting rod, anchor pulling is conducted between the front side of the stand column and a side wall through the anchor cable structure, one section of the anchor cable structure is implanted into the side wall, an