Shaking Table Test Research on the Influence of Center-Hung Scoreboard on Natural Vibration Characteristics and Seismic Response of Suspen-Dome Structures

The center-hung scoreboard is a large electronic display device, that usually has significant weight and flexibly suspended from the roof of gymnasium. suspen-dome structure one common structures gymnasiums. In order to investigate effect on natural vibration characteristics seismic response, including acceleration, displacement, strain, considering dynamic behavior under action can be realistically reflected, shaking table test was carried out based Gymnasium Lanzhou Olympic Sports Center. Firstly, according size table, scale model with geometric similarity ratio 1:20 established. After that, white noise excitation numerical modal analysis were conducted models without compare two modes’ characteristics. Furthermore, earthquake simulation scoreboard, their various responses, compared analyzed. Finally, acceleration response displacement investigated. results show higher-order frequencies will increase when roof, swing excited first in low-order mode. addition, are all increased scoreboard. Meanwhile, influence decreases inner ring outer structure. Moreover, an earthquake, both extremely high. Considering design stage necessary.