In order to better evaluate the structural performance of the wooden floor used in the gymnasium and realize the structural optimization design, this research took the floors of the two gymnasiums in Nanjing as the research object and used the transient excitation method to test the natural frequency and damping ratio parameters of the three types of floor structures, and carried out relevant analysis. The results showed that three kinds of floor structures all meet the requirements of building comfort; under the premise that the types and specifications of the constituent materials were the same, the order of the damping ratios of the three kinds of floor structures from large to small was: fixed floor structure with double-layer load distribution strip, suspended floor structure with single-layer load distribution strip, suspended floor structure with double-layer load distribution strip; compared with the fixed floor structure, the suspended floor structure had low damping ratio characteristics, the energy dissipation of it was slow during structural vibration, which means its impact absorption rate was small, and its impact buffering ability was good, that was, the integral structure had good resilience performance; compared with the floor structure using single-layer load distribution strip, the floor structure using double-layer load distribution strip had a low damping ratio characteristic, the absorption rate of the structure was small and the resilience performance was good. The research conclusion had certain engineering application value.

Gymnasium; Floor structure; Transient excitation method; Natural frequency; Damping ratio