Wind Loading, Structural Health Monitoring and Vibration Control of Super-tall Buildings

Project: Research

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Researcher(s)

Description

Rising 660 m above the city of Shenzhen, the Ping-An Financial Center (PAFC) is currentlythe second tallest building in the world and the tallest in China. As Shenzhen is close to theworld’s most active typhoon-generating area, the PAFC is equipped with an active tuned massdamper (ATMD) system to reduce its wind-induced vibration. This system is the largest of itskind in the world, weighing approximately 1,000 tons. A comprehensive structural healthmonitoring (SHM) system with 548 sensors has been installed in the PAFC for both in-constructionand in-service monitoring by the applicants. The proposed project aims to use thePAFC as a research platform to investigate several key scientific problems relating to the windloading and structural response, SHM and vibration control of super-tall buildings through acombined study of field measurement, wind tunnel testing and numerical analysis. The proposedproject will include four closely related tasks. Task 1 will comprise an in-depth study of SHMand structural performance assessment based on measurements obtained by the SHM system andthe results of numerical analysis, which will provide valuable information for the development ofSHM-related techniques and the design of super-tall buildings. Task 2 will involve acomprehensive investigation of the effects of wind on the super-tall building based on the datagathered by the SHM system under harsh typhoon conditions. The findings will enhanceunderstanding of the wind loading and structural response characteristics of super-tall buildings,and provide important validation of design procedures and assurance of acceptable behavior.Task 3 will comprise a series of wind tunnel tests, such as pressure measurement, high-frequencyforce balance and aeroelastic model tests, to investigate the wind loads and wind-inducedresponses of the high-rise structure. The test results will then be compared with the fieldmeasurements obtained from the SHM system to verify and improve the experimental techniques.Task 4 will involve an assessment of the performance of the ATMD system and an explorationof the optimal control strategy for suppressing the wind-induced responses of super-tall buildings.The effectiveness of the ATMD system installed in the PAFC, the world’s largest such system,will be evaluated to assess the benefits gained from the application of the active controltechnique in the PAFC. Furthermore, the optimal control strategy suitable for applications towind-excited high-rise structures will be proposed.The research results of the SHM from the tallest building in China will help to improveSHM-related techniques for high-rise structures. Field measurements of the effects of wind onthe PAFC under typhoon conditions based on the SHM system will provide a fundamentalimprovement of knowledge in wind loading and the response of super-tall buildings. In addition,the data acquired from the SHM system can be used to improve wind tunnel test techniques andto develop design standards and guidelines for super-tall buildings. In addition, the proposedstudy is expected to generate useful information on the effectiveness of the ATMD system andthe real performance of the actively controlled super-tall building in windstorms. Suchinformation is scarce, and will be helpful for the further development of vibration control ofsuper-tall buildings. In sum, the findings of this comprehensive research project will promote theadvancement of SHM and structural control technique, improve the wind tunnel test techniquesand enhance understanding of the effects of wind on super-tall buildings.?

Detail(s)

Project number9042347
Grant typeGRF
StatusFinished
Effective start/end date1/09/1631/08/20

    Research areas

  • Wind effect , Structural Health Monitoring , Structural Vibration Control , Super-Tall Building , Typhoon