The invention discloses a damping closed type bridge
expansion joint device which comprises a bridge body, an L-shaped supporting steel plate I, an L-shaped supporting steel plate II, elastic dampers,corner braces and a
water stop belt; an
expansion joint is arranged in the middle of the bridge body, and the L-shaped supporting steel plate I and the L-shaped supporting steel plate II are fixed tothe portions, on two sides of the
expansion joint, of the bridge body correspondingly; the corner braces are welded to the upper side of the L-shaped supporting steel plate I and the upper side of the L-shaped supporting steel plate II correspondingly, embedding grooves are defined in the corner braces, embedding blocks are embedded in the embedding grooves, and the embedding blocks are arrangedat two ends of the
water stop belt. The elastic dampers are mounted on the bottom sides of the L-shaped supporting steel plate I and the L-shaped supporting steel plate II; a traditional embedded
assembly is replaced by the embedded
assembly, the operation is convenient and fast, and the maintenance is easy; the telescopic section on the
water stop belt is used for telescopic change of the lengthof the water stop belt, so tearing or traction damage of the water stop belt are avoided, and vehicles can pass through the water stop belt stably; the damping closed type bridge expansion joint device is good in buffering performance, the protection performance of which on a bridge is good, vibration is small,
noise is low, and installation and maintenance are convenient.