The Application of Miran Vibrating String Displacement Sensor in Bridge Inspection

Bridge inspection and maintenance mainly focus on bridge load, vibration, crack deformation of main beams and bridge piers, and deformation of traction ropes. The main beam is the main load-bearing structure of the upper structure of the bridge, which not only bears bending moments, but also various horizontal force components, and is in a state of combined force. The most common damage to the main beam and bridge deck during bridge operation is cracks in the web and top plates of the main beam. The main manifestations of bridge pier diseases are pier misalignment and concrete cracks. There are many reasons for the occurrence of cracks, such as load effects, concrete composition, temperature changes, concrete shrinkage and creep, uneven settlement of foundations, and corrosion of steel bars. Miran Vibrating String Displacement sensors can provide scientific basis for evaluating the load-bearing capacity and health status of bridges by detecting the displacement changes at corresponding positions. They can also make timely warnings before bridge disasters occur, playing a crucial role in ensuring the safe operation of bridges and extending their service life.