Development of locally resonant meta-basement for seismic induced vibration control of high-rise buildings

Zhou, Wen; Bi, Kaiming; Hong, Hui; Pham, Thanh-Hang; Chen, Wensu

doi:10.1016/j.engstruct.2022.115229

Cited by 9 publications

(2 citation statements)

References 42 publications

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“…Zhang [4] proposed a method for designing vibration absorbers for railroad bridges. Extending the focus to the influence of environmental factors on structural vibrations, numerous researchers have explored railway-induced vibrations [5,6] or seismic-induced vibrations [7,8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of a Granular Damping Element

Avdić,

Nagode,

Klemenc

et al. 2024

Polymers

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Due to their advantages—longer internal force delay compared to bulk materials, resistance to harsh conditions, damping of a wide frequency spectrum, insensitivity to ambient temperature, high reliability and low cost—granular materials are seen as an opportunity for the development of high-performance, lightweight vibration-damping elements (particle dampers). The performance of particle dampers is affected by numerous parameters, such as the base material, the size of the granules, the flowability, the initial prestress, etc. In this work, a series of experiments were performed on specimens with different combinations of influencing parameters. Energy-based design parameters were used to describe the overall vibration-damping performance. The results provided information for a deeper understanding of the dissipation mechanisms and their mutual correlation, as well as the influence of different parameters (base material, granule size and flowability) on the overall damping performance. A comparison of the performance of particle dampers with carbon steel and polyoxymethylene granules and conventional rubber dampers is given. The results show that the damping performance of particle dampers can be up to 4 times higher compared to conventional bulk material-based rubber dampers, even though rubber as a material has better vibration-damping properties than the two granular materials in particle dampers. However, when additional design features such as mass and stiffness are introduced, the results show that the overall performance of particle dampers with polyoxymethylene granules can be up to 3 times higher compared to particle dampers with carbon steel granules and conventional bulk material-based rubber dampers.

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Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of a Granular Damping Element

Avdić,

Nagode,

Klemenc

et al. 2024

Polymers

View full text Add to dashboard Cite

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“…Zhang et al [23] employed the Bayesian statistical method to examine the dynamic characteristics of different construction stages of Shanghai Tower (632 m in height) and studied the influence of ambient temperature, building quality and other excitation conditions on modal parameters. Zhou et al [24] investigated the development of meta-based structural vibration control techniques by manipulating the propagation patterns of acoustic/elastic waves.…”

Section: Introductionmentioning

confidence: 99%

Field Measurement Study on Dynamic Characteristics of the Shanghai World Financial Center

et al. 2023

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It is of great practical importance to study the vibration response characteristics of super high-rise buildings under an earthquake action to provide a basis for seismic design and later maintenance of structures in coastal areas. During this study, the Shanghai World Financial Center (SWFC)’s health monitoring system was utilized to monitor earthquakes of magnitude 6.4 in Taiwan, 6.0 in Japan, 7.2 in the East China Sea, and 4.4 in Jiangsu, in real-time. Through the improved Envelope Random Decrement Technique (E-RDT), the dynamic properties of super high-rise buildings were examined under different earthquake effects in terms of the acceleration power spectrum, natural frequency, damping ratio, and mode shape. The results demonstrated that (1) the vibration responses of the structure in X (East–West) and Y (North–South) directions under four earthquakes were consistent, and with increasing floor height, the discreteness of the amplitude and acceleration signals of vibration responses increased. (2) The first two natural frequencies of the structure in X and Y directions decreased with the increase in amplitude, but the damping ratio increased with the increase in amplitude. The minimum values of the first two natural frequencies are 0.1498 Hz and 0.4312 Hz, respectively, and the maximum values of the first two damping ratios are 0.0086 and 0.0068, respectively. (3) Under different earthquake excitations, the SWFC’s mode shape’s estimates were similar, and their change trends in the X and Y directions were nonlinear as the number of floors increased. The structure was not seriously damaged by the four earthquakes. This study can provide helpful information for the seismic design of super high-rise buildings based on its findings.

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