Abstract:

In some coal preparation plant main workshop, 1.2 million tons equipment reformation was completed，The excessive vibration behavior of beam-plates system caused by equipment reformation were tested. The disturbing frequency of vibrating equipment and response of floor vibration were obtained. According to the spot test results，the main cause of excessive vibration of floor is forced resonance, in addition, relatively small vertical stiffness of floor is a reason. The shortcoming of existing strengthening measures was analysis, and then the new vibration reduction treatment scheme was proposed.

Key words: floor vibration, spot testing, resonance, vibration reduction and strengthening