Mitigation of subway-induced low-frequency vibrations using a wave impeding block

Chen, Juan; Geng, Jianlong; Gao, Guanghai; Luo, W.; Liu, Yazhen; Li, Kejin

doi:10.1016/j.trgeo.2022.100862

Cited by 14 publications

(4 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the exciting frequency is higher than the cut-off frequency, wave will transmit. Otherwise, wave transmission will be prevented (Chouw et al, 1991;Schmid et al, 1992;Chen et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Application of periodic structural wave impeding block for vibration isolation in foundation

Ling,

Zhu,

Song

2023

Front. Mater.

View full text Add to dashboard Cite

The wave impeding board (WIB) is frequently integrated beneath dynamic machinery, tracks, and subgrades to counteract vibrations emanating from artificial sources. However, conventional WIBs have exhibited a limited isolation frequency band due to their dependence on the soil cut-off frequency of soil. Furthermore, the vibration sources typically encompass intricate frequency components spanning low, medium, and high frequencies. To overcome the technical limitations of WIBs relying on the cut-off frequency of soil, a new periodic structural wave impeding board (PSWIB) is proposed based on the principles of phononic crystals. Theoretical and numerical analyses demonstrate that PSWIB exhibits bandgap characteristics, with the attenuation range achieved by finite periodic structures aligning with the bandgap of an infinite PSWIB. Maximum amplitude reductions of 47 dB and 65 dB are achieved within the vibration attenuation range. Compared to traditional WIB, PSWIB surpasses the constraints imposed by the cut-off frequency of soil and allow for the design of constituent parameters based on the characteristics of the vibration source, enabling effective isolation of the target frequency vibrations.

show abstract

Section: Introductionmentioning

confidence: 99%

RETRACTED: Application of periodic structural wave impeding block for vibration isolation in foundation

Ling,

Zhu,

Song

2023

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…This strategy is particularly relevant in scenarios involving vibrations generated by vehicles or machinery. Common types of vibration isolation barriers include in-filled trenches [221][222][223], arrays of piles [224], and wave-impeding blocks (WIB) [225][226][227], among others. Vibration waves exhibit phenomena such as reflection and diffraction upon encountering these barriers.…”

Section: Vibration Isolation Barrier In Soilmentioning

confidence: 99%

Structural Vibration Comfort: A Review of Recent Developments

Xie,

Hua

2024

Buildings

View full text Add to dashboard Cite

With continuous improvements in the social economy and living standards of individuals, the vibration comfort of building structures has gradually been emphasized by academic and engineering communities, such as vehicle-induced vibrations in buildings near traffic, human-induced vibrations in large-span structures, wind-induced vibrations in super-high-rise buildings, and machinery-induced structural vibrations. Comfort-based structural analysis is distinct from traditional safety-based structural analysis, and its theoretical systems and unified guidelines have not yet been established. This paper reviews recent research on structural vibration comfort, including major load categories and their impacts, comfort-based structural analysis, evaluation methods, and vibration-mitigation measures. By presenting the shortcomings of the existing research, potential topics for future study are suggested.

show abstract

“…Zhang et al [10] used a numerical model to analyze the ground vibration by metro operation on elevated bridges. Chen et al [11] established a numerical coupled model using the finite element method and found that the wave-impeding block can effectively control low-frequency vibration. Ling et al [12] proposed a high-precision Caughey damping numerical modeling technology for metro cover and studied the effect of metro operation on residents ' comfort.…”

Section: Introductionmentioning

confidence: 99%

Field Test and Numerical Study of Train-Induced Vibration of Over-Track Buildings Above Metro Depot

Chen,

Wan,

2024

Urban Rail Transit

View full text Add to dashboard Cite

To maximize the use of urban land, many cities have built buildings above metro depots. However, the low-frequency vibration caused by metro operation affects the lives of surrounding residents, which seriously restricts the further development of over-track buildings. To study this problem, Firstly, the vibration of the metro depot and surrounding sensitive areas are tested on a large actual metro depot in Southwest China, and the rail, sleeper/support column, bearing column, and cover plate are mainly tested. Then, considering nonlinear factors such as mechanical properties of building materials, soil layering characteristics, and artificial viscoelastic boundary, the numerical coupled model of the train-track-depot-building is established, and the simulation data are compared with the test data to verify the accuracy of the numerical model. Finally, the impact of metro operation on the over-track buildings is evaluated. Results show that for the over-track buildings concerned in this paper, the floor vibration near the rail is the strongest, the main vibration frequency of the office building is concentrated in 10–20 Hz, and the maximum Z vibration level (VLzmax) of the office building is 52.02 dB. The main vibration frequency of the residential building is similar to that of the office building, and the superposition of floor vibration energy causes the vibration of the mid-span point to be larger than the vibration of the corner point and the side wall point. The vibration wave of lower floors mainly propagates through the bearing column, and the vibration of the parking garage is larger than other buildings. The research results can provide a reference for the vibration control and design of over-track buildings above the metro depot.

show abstract

Mitigation of subway-induced low-frequency vibrations using a wave impeding block

Cited by 14 publications

References 43 publications

RETRACTED: Application of periodic structural wave impeding block for vibration isolation in foundation

RETRACTED: Application of periodic structural wave impeding block for vibration isolation in foundation

Structural Vibration Comfort: A Review of Recent Developments

Field Test and Numerical Study of Train-Induced Vibration of Over-Track Buildings Above Metro Depot

Contact Info

Product

Resources

About