Positioning tool of reinforcement cage and underground diaphragm wall reinforcement cage construction method

The invention discloses a reinforcement cage positioning tool and an underground diaphragm wall reinforcement cage construction method, and relates to the technical field of underground diaphragm wall construction.The device comprises multiple sets of main beam parts arranged at intervals, and the multiple sets of main beam parts are connected into a whole through multiple first connecting beams; the at least one anchoring assembly is detachably arranged in the main beam part in a penetrating mode, one end of the anchoring assembly is anchored to the main beam part, and the other end of the anchoring assembly is used for being detachably connected with a reinforcement cage; the lifting lug is assembled on the top surface of the main beam part, the lifting lug can slide along the length direction of the main beam part, a locking device is arranged on the lifting lug, and the locking device is used for locking the lifting lug and the main beam part. According to the positioning tool for the reinforcement cage,