Abstract
In order to better evaluate the structural performance of the wooden floor used in the gymnasium and realize the structural optimization design, this research considered two gymnasium’s floors 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. 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: the fixed floor structure with double-layer load distribution strip, the suspended floor structure with single-layer load distribution strip, and the 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 was slow during structural vibration, which means its impact absorption rate was small, and its impact buffering ability was good. The integral structure had good resilience performance; compared with the floor structure using single-layer load distribution strip. The floor structure using a 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.
Highlights
In recent years, various countries have attached great importance to the development of cultural and sports undertakings
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: the fixed floor structure with double-layer load distribution strip, the suspended floor structure with single-layer load distribution strip, and the 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 was slow during structural vibration, which means its impact absorption rate was small, and its impact buffering ability was good
In the floor vibration caused by human activities, when the natural frequency of the floor was in the range of 3-8 Hz, the resonance reaction was generally the main reason for the vibration, and people would feel uncomfortable when moving on the floor [19]; when the natural frequency of the floor was greater than 8-9 Hz, human activities would not cause resonance response, such floor could be considered as comfortable [20]
Summary
Various countries have attached great importance to the development of cultural and sports undertakings. Cai et al [3,4] used the lateral vibration method to evaluate the performance of solid wood flooring by detecting the frequency and damping ratio of the floor. According to the theory of structural flexibility matrix difference, Chen [6] used the impulse hammering experiment method and finite element simulation technology to study the non-destructive testing of the wooden floor structure and proposed a solution to detect the damage of the wooden floor structure. Zhao et al [7] obtained the forced vibration response data through the forced vibration test and finite element numerical simulation of the wooden floor. The application results showed that: with the help of the forced vibration response data, the calculation of its curvature could better identify the damage of the wooden floor structure, Damage location and degree of damage.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
