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Structural health monitoring of a reinforced concrete building during the severe typhoon Vicente in 2012.

Kuok SC, Yuen KV - ScientificWorldJournal (2013)

Bottom Line: The wind characteristics were analyzed using the measured wind data including the wind speed and wind direction time histories.Besides, the structural response measurements of the monitored building were utilized for modal identification using the Bayesian spectral density approach.Detailed analysis of the field data and the typhoon generated effects on the structural performance are discussed.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil and Environmental Engineering, University of Macau, Macau.

ABSTRACT
The goal of this study is to investigate the structural performance of reinforced concrete building under the influence of severe typhoon. For this purpose, full-scale monitoring of a 22-story reinforced concrete building was conducted during the entire passage process of a severe typhoon "Vicente." Vicente was the eighth tropical storm developed in the Western North Pacific Ocean and the South China Sea in 2012. Moreover, it was the strongest and most devastating typhoon that struck Macao since 1999. The overall duration of the typhoon affected period that lasted more than 70 hours and the typhoon eye region covered Macao for around one hour. The wind and structural response measurements were acquired throughout the entire typhoon affected period. The wind characteristics were analyzed using the measured wind data including the wind speed and wind direction time histories. Besides, the structural response measurements of the monitored building were utilized for modal identification using the Bayesian spectral density approach. Detailed analysis of the field data and the typhoon generated effects on the structural performance are discussed.

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Related in: MedlinePlus

Time histories of the identified spectral intensities of the modal forces.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig11: Time histories of the identified spectral intensities of the modal forces.

Mentions: Spectral intensity of the modal force describes the excitation energy for a mode. The time histories of the identified spectral intensities of the modal forces for the first three modes are shown in Figure 11 with the semilogarithmic scale. It is found that the maximum values of the spectral intensities of the modal forces were thousand times higher than the corresponding values under Signal Number 1. Furthermore, the overall variations showed a similar trend as the 10-minute mean wind speed presented in Figure 4. For instance, the results continuously increased when Vicente was approaching Macao. A sudden drop of the excitation energy occurred when Macao was covered by the eye region of the typhoon. Then, the structural response decreased rapidly during the dissipation of the typhoon effect.


Structural health monitoring of a reinforced concrete building during the severe typhoon Vicente in 2012.

Kuok SC, Yuen KV - ScientificWorldJournal (2013)

Time histories of the identified spectral intensities of the modal forces.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3824557&req=5

fig11: Time histories of the identified spectral intensities of the modal forces.
Mentions: Spectral intensity of the modal force describes the excitation energy for a mode. The time histories of the identified spectral intensities of the modal forces for the first three modes are shown in Figure 11 with the semilogarithmic scale. It is found that the maximum values of the spectral intensities of the modal forces were thousand times higher than the corresponding values under Signal Number 1. Furthermore, the overall variations showed a similar trend as the 10-minute mean wind speed presented in Figure 4. For instance, the results continuously increased when Vicente was approaching Macao. A sudden drop of the excitation energy occurred when Macao was covered by the eye region of the typhoon. Then, the structural response decreased rapidly during the dissipation of the typhoon effect.

Bottom Line: The wind characteristics were analyzed using the measured wind data including the wind speed and wind direction time histories.Besides, the structural response measurements of the monitored building were utilized for modal identification using the Bayesian spectral density approach.Detailed analysis of the field data and the typhoon generated effects on the structural performance are discussed.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil and Environmental Engineering, University of Macau, Macau.

ABSTRACT
The goal of this study is to investigate the structural performance of reinforced concrete building under the influence of severe typhoon. For this purpose, full-scale monitoring of a 22-story reinforced concrete building was conducted during the entire passage process of a severe typhoon "Vicente." Vicente was the eighth tropical storm developed in the Western North Pacific Ocean and the South China Sea in 2012. Moreover, it was the strongest and most devastating typhoon that struck Macao since 1999. The overall duration of the typhoon affected period that lasted more than 70 hours and the typhoon eye region covered Macao for around one hour. The wind and structural response measurements were acquired throughout the entire typhoon affected period. The wind characteristics were analyzed using the measured wind data including the wind speed and wind direction time histories. Besides, the structural response measurements of the monitored building were utilized for modal identification using the Bayesian spectral density approach. Detailed analysis of the field data and the typhoon generated effects on the structural performance are discussed.

Show MeSH
Related in: MedlinePlus