The number of high-rise buildings in coastal areas are increasing, and these buildings have become higher and softer with the application of new materials, the innovation of design concepts and the advancement of construction technology. In recent decades, many full-scale measurements have been conducted on the wind-induced response of high-rise buildings. Field measurements provide valuable scientific data for identifying dynamic parameters, such as mode shapes, natural frequencies and damping ratios [
1,
2,
3,
4,
5,
6,
7,
8,
9]. However, comprehensively measuring the wind-induced response of high-rise buildings during the passing of a typhoon is difficult due to the high cost, uncertain landing trajectory and long test period. Therefore, an on-site measurement of high-rise buildings during typhoons is crucial to a wind-resistant design of high-rise buildings in typhoon-prone areas.
At present, research on the damping ratio of high-rise building structures is mainly based on field measurements, and the influence analysis on the aerodynamic damping ratio is mainly conducted in wind tunnel tests. However, the structure and aerodynamic damping ratio of the actual structure under a strong wind excitation are inseparable. Aeroelastic models, which simulate the amplitude-dependent damping characteristics of high-rise buildings and are designed in wind tunnel tests, are not considered. Many scholars have conducted various studies on the relationship of the damping ratio and vibration amplitude. Vickery and Steckley [
10] and Kareem and Gurley [
11] proposed that aeroelastic effects, especially aerodynamic damping ratios, need to be considered to obtain an accurate wind-induced response. Cooper 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. Li 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. Jeary [
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. Tamura [
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. Li 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. Huang 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. Huang 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.