Shear key for seismic reinforcement capable of horizontal spacing adjustment and displacement measurement

The present invention relates to a shear key for earthquake-resistant reinforcement capable of adjusting horizontal spacing and measuring displacement. In the shear key installed between an upper part structure and a lower part structure of a bridge for seismic reinforcement of a bridge, the shear key for the earthquake-resistant reinforcement capable of adjusting the horizontal spacing and measuring the displacement of the present invention comprises: an upper part plate (10) provided with an upper part guide protrusion (11) downward; a lower part plate (20) on which lower part guide protrusions (21) are provided parallel to each other at regular intervals upward; and a gap adjusting unit (100) provided between the upper part guide protrusion (11) and the lower part guide protrusion (21); and a displacement measuring unit (200). 본 발명은, 교량의 내진보강을 위해 교량의 상부구조물과 하부구조물 사이에 설치되는 전단키에 있어서, 하방으로 상부가이드돌기(11)가 구비되는 상부플레이트(10); 상방으로 하부가이드돌기(21)가 일정간격을 두고 나란하게 구비되는 하부플레이트(20); 상기 상부가이드돌기(11)와 하부가이드돌기(21) 사이에 구비되는 간격조절부(100); 변위측정부(200)를 포함하는 수평간격조절 및 변위측정이 가능한 내진보강용 전단키에 관한 것이다.