Vibration control of wind-induced response of tall buildings with an active tuned mass damper using neural networks

Bani-Hani, Kamal E.

doi:10.1002/stc.85

Cited by 41 publications

(22 citation statements)

References 18 publications

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“…Finally, it is should be pointed out again that structural control must be used in 1,000 m‐high building in order to satisfy their safe and comfortable requires at the acting of wind, especially in across‐wind direction. Except traditional aerodynamic treatments used in wind engineering, passive, active, or semiactive structural control device is needed . Furthermore, there are many innovative studies of health monitoring in high‐rise buildings; 1,000 m‐high super‐tall buildings is another important change to apply these techniques.…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Investigation of wind load on 1,000 m-high super-tall buildings based on HFFB tests

Yang

Solari

et al. 2017

Struct Control Health Monit

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Summary This paper studies the wind load on 1,000 m‐high super‐tall buildings and provides basic reference for design, including the utilization of passive and active control devices. High‐frequency force balance wind tunnel tests of super‐tall buildings with different height are carried out to investigate the effects of building height and wind flow on the wind load. Both monsoon and typhoon climate wind flows are simulated based on target models suggested in literatures. The simulation of typhoon climate wind flows is carried out by a newly developed technique. The analysis of the experimental results confirms that the aerodynamic force is very sensitive to both building height and wind flow. In monsoon climate, the turbulence intensity decreases on increasing the height above ground. Thus, on increasing the building height, vortex shedding becomes increasingly intense and excites stronger structural vibrations in the across‐wind direction, though the across‐wind fluctuating overturning moment coefficient is almost the same. In typhoon climate, both the mean and the fluctuating overturning moment coefficients increase with the building height. This is mainly caused by the decreasing mean wind speed. The vortex excitation becomes weaker on increasing the building height, and this phenomenon is different from that observed in the monsoon climate. In order to better explain vortex‐shedding excitation, a new parameter referred to as the characteristic turbulence intensity is defined herein as a weighted mean value of the turbulence intensity in the range of the building height. It provides a robust interpretation of the vortex excitation of super‐tall buildings located in different wind flow and climate conditions.

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Section: Conclusion and Prospectsmentioning

confidence: 99%

Investigation of wind load on 1,000 m-high super-tall buildings based on HFFB tests

Yang

Solari

et al. 2017

Struct Control Health Monit

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“…Another mean of enhancing the efficacy of a TMD is to use externally powered actuators to continuously tune the stiffness and damping of the TMD, depending upon the feedback response obtained from the parent structure. These mechanisms are termed active, semiactive, or smart TMD (ATMD, STMD) . Though substantially effective, active systems require external power, which might range to megawatts .…”

Section: Introductionmentioning

confidence: 99%

“…These mechanisms are termed active, semiactive, or smart TMD (ATMD, STMD). [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] Though substantially effective, active systems require external power, which might range to megawatts. 33 Also, power failure is very common during windstorms.…”

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confidence: 99%

Frequency‐independent hysteretic dampers for mitigating wind‐induced vibrations of tall buildings

Ali

Alexander

Ray

2019

Struct Control Health Monit

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Summary Mitigation of wind‐induced vibrations in tall buildings has been taken seriously for decades for the safety of the load bearing members, nonstructural elements, and the building envelope, as well as for the comfort of the occupants. Among various technologies to mitigate these vibrations, tuned mass dampers with various improvisations, active or semiactive controls, and viscous dampers are proposed and used extensively. Although these technologies are dependent on the frequency of vibration, research on frequency‐independent hysteretic dampers for mitigating wind‐induced vibrations are quite limited. This paper evaluates the efficiency of hysteretic dampers in suppressing wind‐induced vibrations. Inelastic dynamic wind‐load analyses are performed with two regular three‐dimensional buildings and one 76‐story benchmark two‐dimensional building. It is found that hysteretic dampers perform exceedingly better than the state‐of‐the‐art control systems because they can absorb energy near the natural frequencies of the parent structure, as well as within the frequency bandwidth of windstorms.

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“…They concluded that the across-wind vibration control efficiency is higher than that of the along-wind vibration control. Bani-Hani (2007) used neural networks for vibration control of wind-induced response of a tall building with an ATMD. Li et al (2010) presented an optimum design methodology of ATMD for asymmetric structures.…”

Section: Introductionmentioning

confidence: 99%

Proposed robust tuned mass damper for response mitigation in buildings exposed to multidirectional wind

Aly

2012

Struct. Design Tall Spec. Build.

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SUMMARY The most common device for control of tall buildings under wind loads is the tuned mass damper (TMD). However, during their lifetimes, high‐rise and slender buildings may experience natural frequency changes under wind speed, ambient temperatures and relative humidity variations, among other factors, which make the TMD design challenging. In this paper, a proposed approach for the design of robust TMDs is presented and investigated. The approach accounts for structural uncertainties, optimization objectives and input excitation (wind or earthquake). For the use of TMDs in buildings, practical design parameters can be different from the optimum ones. Nevertheless, predetermined optimal parameters for a primary structure with uncertainties are useful to attain design robustness. To illustrate the applicability of the proposed approach, an example of a very slender building with uncertain natural frequencies is presented. The building represents a case study of an engineered design that is instructive. Basically, due to its geometry, the building behaves differently in one lateral direction (cantilever building) than the other (shear building). The proposed approach shows its robustness and effectiveness in reducing the response of tall buildings under multidirectional wind loads. In addition, linear‐quadratic Gaussian and fuzzy logic controllers enhanced the performance of the TMD. Copyright © 2012 John Wiley & Sons, Ltd.

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Vibration control of wind-induced response of tall buildings with an active tuned mass damper using neural networks

Cited by 41 publications

References 18 publications

Investigation of wind load on 1,000 m-high super-tall buildings based on HFFB tests

Investigation of wind load on 1,000 m-high super-tall buildings based on HFFB tests

Frequency‐independent hysteretic dampers for mitigating wind‐induced vibrations of tall buildings

Proposed robust tuned mass damper for response mitigation in buildings exposed to multidirectional wind

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