Probabilistic assessment of vibration exceedance for a full‐scale tall building under typhoon conditions

Huang, Mingfeng; Xu, Qianfan; Xu, Hengyu; Ni, Yi; Kwok, K.C.S.

doi:10.1002/tal.1516

Cited by 7 publications

(2 citation statements)

References 40 publications

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“…Field measurements allow one to directly understand the dynamic structural characteristics (i.e., the natural frequency, damping ratio, and mode shape) of prototype buildings; in fact, they provide useful information for finite element model (FEM) updating, damage detection, structural performance monitoring, etc. In recent decades, numerous field measurement studies pertaining to tall/super-tall buildings have been conducted [1][2][3][4][5]. Ohkuma [1] conducted field measurements of a 68 m steel structure to measure its along-wind and cross-wind accelerations in strong winds and identified its frequencies and damping characteristics.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Wind Effects on a Super-Tall Building under a Typhoon

Pan

2022

Buildings

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Field measurements are critical to further understand the structural behavior of super-tall buildings under strong wind actions. This paper presents field measurements that reflect the wind characteristics and wind effects on Leatop Plaza under Typhoon Vicente. Wind field characteristics, including the turbulence intensity, gust factor, and power spectral density of wind speed in an urban area, were obtained on the basis of a statistical analysis of measured wind data. Subsequently, measured wind-induced accelerations were used to evaluate the dynamic characteristics of the building and the effects of wind on it. On the basis of the first several modes, the modal properties, i.e., the natural frequency and damping ratio, were identified via the fast Bayesian fast Fourier transform method and compared with those identified using the stochastic subspace method. The discrepancy between the identified results and finite element model predictions is presented and discussed. Finally, the variation in the modal parameters with respect to time and the vibration amplitude was analyzed while considering the associated posterior uncertainty.

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Section: Introductionmentioning

confidence: 99%

Monitoring of Wind Effects on a Super-Tall Building under a Typhoon

Pan

2022

Buildings

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“…Modal identification plays an important role in studying the dynamic characteristics of a precast building. The modal parameters identified are the baseline properties for model updating, sensor placement, damage detection, and structural performance evaluation . Three methods were mainly used to measure acceleration, velocity, and displacement, including ambient, free, and forced tests .…”

Section: Introductionmentioning

confidence: 99%

Vibration properties monitoring and uncertainty quantification of precast and cast‐in‐situ shear wall buildings using a Bayesian framework

Yun²,

Zhang

et al. 2020

Struct Control Health Monit

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Summary Precast buildings have been becoming popular in China in these 5 years since they have many merits such as effectiveness, safety, high quality, and environmental friendliness. In some cities of China, it is required to make the proportion of precast buildings account for 30% in newly built construction areas. Following the rapid development, their vibration behaviors are attracting more attention since it may be quite different from the cast‐in‐situ building. To investigate the difference, this paper studies the modal properties of two kinds of buildings, i.e., new‐type precast building and cast‐in‐situ building. They were built in the same area, while the structural forms are also similar. The main difference is the construction manner. Ambient vibration tests of these two structures were conducted respectively. Since the number of sensors is limited, the locations of interest were measured by a multiple‐setup technique. The difficulty encountered during the field test was discussed. A frequency domain Bayesian approach was used to conduct operational modal analysis. Both the most probable value and posterior uncertainties of modal parameters were studied, including translational, torsional, and wrapping modes. The difference of the modal parameters of the two kinds of buildings are compared and discussed. Finite element models were also built to perform a comparison. It is seen that although the structural forms and appearances of the two buildings are similar, some obvious differences were observed regarding the dynamic characteristics, which provide valuable information for popularizing and future assessment of the new‐type precast structure.

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Monitoring-based evaluation of dynamic characteristics of a long span suspension bridge under typhoons

Guo

Zhu

et al. 2021

J Civil Struct Health Monit

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Probabilistic assessment of vibration exceedance for a full‐scale tall building under typhoon conditions

Cited by 7 publications

References 40 publications

Monitoring of Wind Effects on a Super-Tall Building under a Typhoon

Monitoring of Wind Effects on a Super-Tall Building under a Typhoon

Vibration properties monitoring and uncertainty quantification of precast and cast‐in‐situ shear wall buildings using a Bayesian framework

Monitoring-based evaluation of dynamic characteristics of a long span suspension bridge under typhoons

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