Monitoring of a Tall Building Equipped with an Efficient Multiple-Tuned Sloshing Damper System

Love, J.S.; Morava, B.; Smith, Andrew W.

doi:10.1061/(asce)sc.1943-5576.0000481

Cited by 15 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The base isolation devices are significantly preferable among all passive vibration control devices for protecting the structures and human lives from natural calamities like seismic events 1,2,3,4,5,6,7 . The vibration isolation devices are installed in many structures such as aerospace 8 , vehicle suspension 9 , liquid storage tanks 10 , buildings 11,12,13,14 , bridges 15,16 , aircraft landing gear 17,18 for mitigating the dynamic responses during vibration.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Inertial Amplifier Base Isolators for Dynamic Response Control of Multi-Storey Buildings

Chowdhury

Banerjee

Adhikari

2022

Int. J. Str. Stab. Dyn.

View full text Add to dashboard Cite

The optimal design of inertial amplifier base isolators (IABI) for dynamic response mitigation of multi-storey buildings subjected to base excitations has been studied in this paper. In order to achieve the closed-form expressions for optimal design parameters of IABI, [Formula: see text] optimization method has been employed. The effectiveness of the closed-form expressions for optimal design parameters was evaluated by determining the isolated structures’ frequency and time domain responses and comparing them to the corresponding responses obtained from equivalent uncontrolled structures. A numerical study employing the Newmark-beta method is conducted to obtain time-domain responses using near-field earthquake base excitation. The response reduction capacity (%) of the optimum inertial amplifier base isolator is compared to the response reduction capacity (%) of the optimum traditional base isolators, demonstrating that inertial amplifiers have increased the vibration reduction performance of traditional base isolators by 50% to 60%. All the outcomes from the study are mathematically accurate and also feasible for practical design purposes.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimal Design of Inertial Amplifier Base Isolators for Dynamic Response Control of Multi-Storey Buildings

Chowdhury

Banerjee

Adhikari

2022

Int. J. Str. Stab. Dyn.

View full text Add to dashboard Cite

show abstract

“…Previously civil structures were designed by conventional codes along with Passive Vibration Control (PVC) system, that is unable to adjust structural characteristics (i.e., mass, stiffness, or damping) dynamically under the environmental loads (i.e., earthquakes and strong winds). [1][2][3][4][5][6][7] However, with the developing trend of high-rise buildings and long-span bridges, the need for smart structures ascends that can adapt towards their changing environment and keep up their serviceability progressively. Through the escalation of Active Vibration Control (AVC) and Semi-active Vibration Control (SVC) systems since 1980, 8,9 the concept of smart structures is acknowledged 10 as an intelligent machine that can change and adapt to its environment dynamically working on a few components: sensors, actuators, signal processors, and power sources.…”

Section: Introductionmentioning

confidence: 99%

Research developments in adaptive intelligent vibration control of smart civil structures

Saeed

Sun

Elias

2021

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

Control algorithms are the most critical aspects in the successful control of civil structures subjected to earthquake and wind forces. In recent years, adaptive intelligent control algorithms are emerging as an acceptable substitute method to conventional model-based control algorithms. These algorithms mainly work on the principles of artificial intelligence (AI) and soft computing (SC) methods that make them highly efficient in controlling highly nonlinear, time-varying, and time-delayed complex civil structures. The current research probes to control algorithms, that this article set forth an inclusive state-of-the-art review of adaptive intelligent control (AIC) algorithms for vibration control of smart civil structures. First, a general introduction to adaptive intelligent control is presented along with its advantages over conventional control algorithms. Second, their classification concerning artificial intelligence and soft computing methods is provided that mainly consists of artificial neural network-based controller, brain emotional learning-based intelligent controller, replicator dynamics-based controller, multi-agent system-based controller, support vector machine-based controller, fuzzy logic control, adaptive neuro-fuzzy inference system-based controller, adaptive filters-base controller, and meta-heuristic algorithms-based hybrid controllers. Third, a brief review of these algorithms with their developments on the theory and applications is provided. Fourth, we demonstrate a summarized overview of the cited literature with a brief trend analysis is presented. Finally, this study presents an overview of these innovative AIC methods that can demonstrate future directions. The contribution of this article is the anticipation of detailed and in-depth discussion into the perspective of AI and SC-based AIC method advances that enabled practical applications in attenuating vibration response of smart civil structures. Moreover, the review demonstrates the computing advantages of AIC over conventional controllers that are important in creating the next generation of smart civil structures.

show abstract

“…Also, the nonlinear behavior with increasing damping by increasing vibration levels is well established, 8,15 based on shake table tests. Studies of full‐scale tall buildings equipped with TLDs, however, are rare and have mostly focused on steel towers and tall buildings 11,14,16‐18 . Furthermore, Su et al 19 reviewed field monitoring of high‐rise structures and, in this review, reported studies of buildings equipped with TLDs are rare.…”

Section: Introductionmentioning

confidence: 99%

“…They found that the added effective damping from the absorbers depended on the level of vibration but, during larger wind events, the absorbers added 1.5–3% effective damping. Love et al 17 studied the full‐scale performance of multiple tuned sloshing dampers installed in a tall building before and after the installation. The study found a good agreement between the theoretical and the full‐scale performance where the dampers reduced wind‐induced acceleration of the building with approximately 50% when wind speeds exceed 5m/s.…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of structural damping of a full‐scale building with and without tuned liquid dampers

Tarpø

Georgakis

Brandt

et al. 2020

Struct Control Health Monit

View full text Add to dashboard Cite

Summary The theory of vibration absorbers is well established, but the literature lacks documentation of the actual performance of absorbers installed in tall buildings. This paper presents an experimental assessment of the dynamic characteristics of one of two identical high‐rise towers of the European Court of Justice in Luxembourg, before and after the activation of tuned liquid dampers, tuned to the frequency of the first mode. The prime focus of this assessment is structural damping and the effect that the tuned liquid dampers have on this. Two different full‐scale test methods were utilized: operational modal analysis, using ambient vibrations, and harmonic forced vibration tests using two centrifugal mass exciters. All three modes were excited at and around their natural frequencies of approximately 0.44, 0.57, and 0.82 Hz, respectively. To determine the damping, the free decays of the acceleration signals after shutting off the forces were studied. A clear and unambiguous increase in damping was found after the activation of the tuned liquid dampers, with damping increasing from 0.8% to 3.8% for the first mode. Also, the damping of the second mode was increased, although only from approximately 0.8% to 1%. The damping of the third torsional mode is approximately 0.6% and it is unaffected by the activation of the dampers. Thus, the tuned liquid dampers mainly affect the first mode as intended where the damping ratio increases with at least 500%. The results, finally, strongly suggest nonlinear behavior of the tuned liquid dampers, with higher damping at higher vibration levels.

show abstract

Monitoring of a Tall Building Equipped with an Efficient Multiple-Tuned Sloshing Damper System

Cited by 15 publications

References 14 publications

Optimal Design of Inertial Amplifier Base Isolators for Dynamic Response Control of Multi-Storey Buildings

Optimal Design of Inertial Amplifier Base Isolators for Dynamic Response Control of Multi-Storey Buildings

Research developments in adaptive intelligent vibration control of smart civil structures

Experimental determination of structural damping of a full‐scale building with and without tuned liquid dampers

Contact Info

Product

Resources

About