Expansion joint for concrete structure

The utility model discloses an expansion joint for a concrete structure, which relates to the field of expansion joints and comprises an expansion joint, two fixing rings are arranged on the expansion joint, fixing sheets are fixedly mounted on two sides of the two fixing rings, two fixing strips are movably mounted on the two fixing sheets on the same side, and the two fixing strips are fixedly mounted on the expansion joint. And two positioning rods are mounted on each of the four fixing strips in a sliding manner. Through the arrangement of the fixing strips, the supporting rods and the telescopic cones, the supporting rods around the fixing strips can play a role in supporting the telescopic joints, the telescopic cones can stretch out and draw back according to the installation position and terrain in the using process, and if soil or concrete around the telescopic cones is loosened and aged, the telescopic cones can not be damaged. And under the action of the adaptive spring, the telescopic cone can be