Monitoring dynamic characteristics of 600 m+ Shanghai Tower during two consecutive typhoons

Wu, Jie; Hu, Ningtao; Dong, You; Zhang, Qilin

doi:10.1002/stc.2666

Cited by 15 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The graphs show that the acceleration signals have kurtosis coefficients of K = 3.8565 in the X direction and K = 3.2209 in the Y direction. They are compared with the Gaussian distribution [ 37 ]: when the skewness coefficient S > 0, the PDF is right-biased; while the skewness coefficient S < 0, the PDF is left-biased; when the kurtosis coefficient K > 3, the PDF is highly peaked; while the kurtosis coefficient K < 3, the PDF is lowly peaked. As seen, the present PDFs are highly peaked [ 38 , 39 , 40 ], which means the probability of strong vibration occurring on high floors is large, and thus, more attention should be paid to structural design and health monitoring.…”

Section: Vibration Response Characteristics Of the Swfc Under Typhoonmentioning

confidence: 99%

Field Measurements of Wind-Induced Responses of the Shanghai World Financial Center during Super Typhoon Lekima

Wang

Zhang

et al. 2023

Sensors

View full text Add to dashboard Cite

In this paper, the wind-induced responses of the Shanghai World Financial Center (SWFC) under Super Typhoon Lekima are measured using the health monitoring system. Based on the measurements, the characteristics of vibration, including probability density distribution of accelerations, power spectra, and mode shapes are studied. The curve method and the standard deviation method are used to analyze the relationship of the first- and second-order natural frequencies and damping ratios with amplitudes and the mean wind speed. The results show the following: (1) The structural wind-induced responses in the X and Y directions have high consistencies, and the vibration signals exhibit a peak state; moreover, response amplitudes and acceleration signals disperse when the floor height increases. (2) The first- and second-order natural frequencies in the X and Y directions decrease with the increasing amplitudes and are negatively correlated with mean wind speed; the maximum decrease in natural frequency is 5.794%. The first- and second-order damping ratios in the X and Y directions increase with the increasing amplitudes and are positively correlated with the mean wind speed; the maximum increase in damping ratio is 95.7%. (3) The curve method and the standard deviation method are similar in identifying dynamic characteristic parameters, but the discreteness of the natural frequencies obtained by the curve method is lesser. (4) Under excitations of various typhoons, the mode shapes of SWFC are basically the same, and the mode shapes in the X and Y directions increase with the height and have nonlinearity.

show abstract

Section: Vibration Response Characteristics Of the Swfc Under Typhoonmentioning

confidence: 99%

Field Measurements of Wind-Induced Responses of the Shanghai World Financial Center during Super Typhoon Lekima

Wang

Zhang

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…The results revealed strong agreement between the model and the actual vibration data for the models considering horizontal springs attached to the retaining walls of the subterranean stories to account for the soil-structure interaction. Wu et al [19] used a modified discrete-time Fourier transform combined with moving window technology in the time domain to examine the time-varying dynamic features of Shanghai Tower under the stimulation of normal wind and two subsequent typhoons. According to the authors, the findings can help with the wind-resistant design of significantly high-rise structures.…”

Section: Introductionmentioning

confidence: 99%

Determining the Dynamic Characteristics of a Multi-Story RC Building Located in Chile: A Comparison of the Results between the Nonparametric Spectral Analysis Method and the Parametric Stochastic Subspace Identification Method

et al. 2022

View full text Add to dashboard Cite

Estimating the dynamic characteristics of instrumented built structures from seismic vibration data collected from built civil structures is essential input information for structural model updating and assessing the health of structures. This study focuses on the earthquake acceleration time histories obtained from several events recorded during its construction phase by accelerometers placed throughout an office building located in Viña del Mar (Chile) to determine its modal features. To this end, the data obtained were analyzed to compare the building’s dynamic properties obtained with two different modal identification techniques. MATLAB programs were developed to implement both methods. The stochastic subspace identification technique for linear systems developed by van Overschee and de Moor was used to study the dynamic properties of the building. In contrast, the nonparametric method employed herein uses correlations and spectral analysis based on the Welch transform in the frequency domain. The investigation demonstrated that both methods identify similar frequencies and that the obtained translational mode shapes exhibit good agreement. Furthermore, the identified frequencies are congruent with the design frequencies.

show abstract

“…En el caso de proyectos que no fueron instrumentados durante su construcción, como estructuras patrimoniales o edificaciones que no están obligadas a instrumentar según algunas de las normativas latinoamericanas [3], la caracterización dinámica de una estructura con dispositivos portátiles y la calibración de modelos con propiedades de materiales, geometría y dimensiones se convierten en una metodología atractiva para disponer de modelos representativos [4]. La caracterización dinámica de estructuras mediante el uso de sismógrafos constituye una metodología de reciente adopción que ha arrojado resultados de alta precisión [5] [6] [7] [8]. La instrumentación de estructuras con acelerómetros o sismógrafos en América Latina, regida por las disposiciones normativas propias de cada país, se limita únicamente a edificaciones con atributos específicos [9] .…”

unclassified

“…Asimismo, estos dispositivos han sido empleados en edificaciones que poseen un profundo valor histórico, tal es el caso de la iglesia de Nuestra Señora del Refugio en Puebla, México [4] , y en la Catedral de la Ciudad de México [2] . Adicionalmente, se han registrado aplicaciones en estructuras notables como el puente Golden Gate [5], la torre inclinada de Pisa [6], la torre Eiffel [7] , y en otras construcciones de usos múltiples, como la torre de Shanghái [8], entre otros [10]. Estos ejemplos trazan un panorama que subraya la amplia gama de aplicaciones de los sismógrafos y acelerógrafos en este ámbito.…”

unclassified

Caracterización Dinámica del Edificio 'María Nieves y Bustamante' de la Universidad Católica San Pablo de Arequipa y su Subsuelo a través del Uso de Sismógrafos

Carpio,

Simbor,

Villareal

2023

Memoria investig. ing. (Facultad Ing., Univ. Montev.)

View full text Add to dashboard Cite

show abstract

Monitoring dynamic characteristics of 600 m+ Shanghai Tower during two consecutive typhoons

Cited by 15 publications

References 33 publications

Field Measurements of Wind-Induced Responses of the Shanghai World Financial Center during Super Typhoon Lekima

Field Measurements of Wind-Induced Responses of the Shanghai World Financial Center during Super Typhoon Lekima

Determining the Dynamic Characteristics of a Multi-Story RC Building Located in Chile: A Comparison of the Results between the Nonparametric Spectral Analysis Method and the Parametric Stochastic Subspace Identification Method

Caracterización Dinámica del Edificio 'María Nieves y Bustamante' de la Universidad Católica San Pablo de Arequipa y su Subsuelo a través del Uso de Sismógrafos

Contact Info

Product

Resources

About