# Field Research on the Wind-Induced Response of a Super High-Rise Building under Typhoon
[PERSON] and [PERSON] [10] and [PERSON] and [PERSON] [11] proposed that aeroelastic effects, especially aerodynamic damping ratios, need to be considered to obtain an accurate wind-induced response. [PERSON] et al. [12] conducted a wind tunnel test by using an aeroelastic model and found that the aerodynamic coefficients excited by wind increased with the amplitude in the downwind and upwind directions when the wind speed was low. [PERSON] et al. [13] conducted field measurements on the 324 m Diwang Tower and a 367 m high-rise building to analyse the influence of nonlinear damping characteristics on dynamic behaviour and found that the damping ratio increased with the increase in amplitude. [PERSON] [14] determined the relationship between damping and amplitude through a 100 m high structural steel building, which has a low-amplitude stability level, a medium-amplitude slope and a high-amplitude stability level. [PERSON] [15] conducted tests on a 99 m steel tower and found that when the amplitude was above the critical tip displacement ratio, the damping ratio no longer increased but remained at a stable level. [PERSON] et al. [16] conducted field measurements on a 420 m building to analyse the damping ratios of the super-tall building, which demonstrates amplitude-dependent characteristics. [PERSON] et al. [17] analyzed the dynamic response and dynamic characteristics based on the long-term monitoring acceleration data of the Shanghai World Financial Center. The standard deviation of the top acceleration increases with the mean wind speed as a power function, and the first-order natural vibration frequency decreases with the increase of the top amplitude. The first order damping ratio increases as the amplitude of the top increases. [PERSON] et al. [18], based on the measured acceleration data of a super high-rise building under the action of a typhoon, considered an amplitude greater than 10 mm/s\({}^{2}\); the X-direction vibration mode damping ratio gradually becomes larger as the amplitude increases, and the amplitude reaches 30 mm/s\({}^{2}\). The damping ratio is stable at about 0.6%. In summary, most studies have shown that the damping ratio remains at a stable level at low amplitudes and increases with the amplitude before the low amplitude reaches a critical value. Once the critical value is reached, the damping ratio tends to be stable as the amplitude increases. Therefore, field measurements are needed to verify the variation trend and range of amplitude-dependent modal frequencies at high amplitudes. At present, most of the measured research only analyzes the dynamic response and dynamic characteristics of a super high-rise building under a certain typhoon. The time span of the measured data is not large enough, and almost no large wind events are involved. It is difficult to fully obtain the wind-induced response law of super high-rise buildings. Therefore, it is necessary to conduct long-term observations on the wind-induced response of super-tall buildings, as well as a comprehensive and in-depth analysis of the dynamic response and dynamic characteristics of super-tall buildings through a large amount of response data. The wind-induced response of a high-rise building in Wenzhou, China during typhoons from 2014-2016 was measured in this study. The wind characteristics at the top of the building and the wind-induced response of different floors were obtained, and the relationship between e acceleration amplitude and the 10-min mean wind speed was determined. The Welch and improved Natural Excitation Technique -Eigensystem Realisation Algorithm (NExT-ERA) methods are used to identify the modal parameters, providing a reference for subsequent studies on the nonlinear characteristics of the modal parameters of high-rise buildings during typhoons.