The National Bridge gantry Crane Quality Inspection Center undertook the layout and installation of the first batch of controlled intelligent monitoring equipment for large bridge dampers, and completed the calibration of the damper strain coefficient. The eight dampers controlled by this batch have a maximum force of 200 tons and will play a role in earthquake resistance and wind protection of large Bridges. Recently, in the construction of the damping strength monitoring system for large Bridges and super high-rise buildings developed by the Shanghai Institute of Materials, the National Bridge gantry Crane Quality Inspection Center undertook the layout and installation of the first batch of controlled large-scale bridge damper intelligent monitoring equipment, completed the calibration of the damper strain coefficient, and provided for the developer to determine and calculate the mechanical strength of the controlled damper