Evaluation of wind effects on a supertall building based on full-scale measurements

Li, Q. S.; Fang, Jason; Jeary, Alan; Wong, C. K.; Liu, Dikai

doi:10.1002/1096-9845(200012)29:12<1845::aid-eqe995>3.0.co;2-q

Cited by 46 publications

(33 citation statements)

References 8 publications

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“…More sophisticated friction laws, even state-dependent dynamic friction laws, may be needed. A comprehensive review of friction, in particular in dynamic context, can be found in [45].…”

Section: Further Discussionmentioning

confidence: 99%

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Energy Dissipation and Vibration Control: Modeling, Algorithm and Devices

2018

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“…More sophisticated friction laws, even state-dependent dynamic friction laws, may be needed. A comprehensive review of friction, in particular in dynamic context, can be found in [45].…”

Section: Further Discussionmentioning

confidence: 99%

“…Considering five DOFs for each node, which are the two horizontal translational and three rotational DOFs, a total number of 185 DOFs are included. The damping ratio of the structure was assumed to be 0.004 [44,45]. The layout of the model [46] is shown in Figure 6.…”

Section: Shm System and Benchmark Model Of The Canton Towermentioning

confidence: 99%

Energy Dissipation and Vibration Control: Modeling, Algorithm and Devices

2018

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Section: Shm System and Benchmark Model Of The Canton Towermentioning

confidence: 99%

PTMD Control on a Benchmark TV Tower under Earthquake and Wind Load Excitations

2017

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A pounding tuned mass damper (PTMD) is introduced by making use of the energy dissipated during impact. In the proposed PTMD, a viscoelastic layer is attached to an impact limitation collar so that energy can be further consumed and transferred to heat energy. An improved numerical model to simulate pounding force is proposed and verified through experimentation. The accuracy of the proposed model was validated against a traditional Hertz-based pounding model. A comparison showed that the improved model tends to have a better prediction of the peak pounding force. A simulation was then carried out by taking the benchmark Canton Tower, which is a super-tall structure, as the host structure. The dynamic responses of uncontrolled, TMD-controlled and PTMD controlled system were simulated under wind and earthquake excitations. Unlike traditional TMDs, which are sensitive to input excitations and the mass ratio, the proposed PTMD maintains a stable level of control efficiency when the structure is excited by different earthquake records and different intensities. Particularly, more improvement can be observed when an extreme earthquake is considered. The proposed PTMD was able to achieve similar, or even better, control effectiveness with a lower mass ratio. These results demonstrate the superior adaptability of the PTMD and its applicability for protection of a building against seismic activity. A parametric study was then performed to investigate the influence of the mass ratio and the gap value on the control efficiency. A comparison of results show that better control results will be guaranteed by optimization of the gap value.

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“…For instance, Brownjohn et al (1998) established a long-term monitoring program for a 280 m high 65-story office tower in Singapore to monitor structural dynamic responses and track structural performance during and after construction. A full-scale measurement of acceleration responses on a 70-story building in Hong Kong under strong typhoons was conducted (Li et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Long-term structural performance monitoring system for the Shanghai Tower

Xia

Chen

et al. 2013

J Civil Struct Health Monit

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The Shanghai Tower, currently being constructed in Shanghai, China, is a supertall building with a height of 632 m. The Shanghai Tower will be the tallest skyscraper in China after its completion. This structure consists of a core wall inner tube, an outer mega-frame, and a total of six levels of outriggers that connect the tube and the frame.The structure needs comprehensive full-scale investigation to understand its structural performance when subjected to dead loads, strong winds, earthquakes, and temperatures, given its supertall height and complex structural configuration. A sophisticated structural performance monitoring system that consists of more than 400 sensors is designed for both in-construction and in-service real-time monitoring of the skyscraper. This is the Pre-Published Version.This paper reports the structural system and provides details on the performance of the monitoring system. The key features of the monitoring system are the following: (1) simultaneous installation of sensors and data acquisition systems with structural construction to record initial values; (2) measurement of structural settlement and displacement at different construction stages; (3) direct measurement of wind loads on structure facades through 27 wind pressure sensors; and (4) measurement of structural inclination and derivation of structural sway at different heights using 40 inclinometers.Preliminary monitoring data, which include deformation and strain/stress up to the present construction stage, are also presented and discussed.

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Evaluation of wind effects on a supertall building based on full-scale measurements

Cited by 46 publications

References 8 publications

Energy Dissipation and Vibration Control: Modeling, Algorithm and Devices

Energy Dissipation and Vibration Control: Modeling, Algorithm and Devices

PTMD Control on a Benchmark TV Tower under Earthquake and Wind Load Excitations

Long-term structural performance monitoring system for the Shanghai Tower

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