A novel formulation for transfer path identification and vibration prediction in the over-track building induced by trains

Li, Wanbo; Liu, Weifeng

doi:10.1007/s11356-023-26122-1

Cited by 10 publications

(5 citation statements)

References 50 publications

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“…Wang et al [20] used different algorithms to study the transfer characteristics from the target environment and the vibration source. Li et al [21] proposed OTPA and SVD formulas to predict the vibration of building. Ma et al [22] studied the vibration influence of this function on optimizing periodic piles using band gap performance evaluation function.…”

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

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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.

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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

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“…Te general vibration mitigation methods include (i) vibration mitigation at the source, such as using highly damped track structures to mitigate train-induced vibration [6,7], (ii) vibration mitigation at the propagation path, such as implementing vibration isolation piles in the ground between the external excitation and the building [8,9], and (iii) passive vibration isolation in sensitive buildings, such as installing vibration isolation tables under sensitive instruments and historical artefacts [10]. Te vibration isolation measures for sensitive buildings require targeted design according to the specifc vibration source type and the magnitude of vibration it generates.…”

Section: Introductionmentioning

confidence: 99%

Classification of External Vibration Sources through Data-Driven Models Using Hybrid CNNs and LSTMs

Liang

Liu

Kaewunruen

et al. 2023

Structural Control and Health Monitoring

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Excessive external vibrations could affect the normal functioning and integrity of sensitive buildings such as laboratories and heritage buildings. Usually, these buildings are exposed to multiple external vibration sources simultaneously, so the monitoring and respective evaluation of the vibration from various sources is necessary for the design of targeted vibration mitigation measures. To classify the sources of vibration accurately and efficiently, the advanced hybrid models of the convolutional neural network (CNN) and long short-term memory (LSTM) network were built in this study, and the models are driven by the extensive data of external vibration recorded in Beijing, and the parametric studies reveal that the proposed optimal model can achieve an accuracy of over 97% for the identification of external vibration sources. Finally, a real-world case study is presented, in which external vibration monitoring was carried out in a laboratory and the proposed CNN+LSTM model was used to identify the sources of vibration in the monitoring so that the impact of vibration from each source on the laboratory was analyzed statistically in detail. The results demonstrate the necessity of this study and its feasibility for engineering applications.

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“…With the development of urban rail transit, the problems of train-induced tunnel and building vibrations have received increasing attention recently [1][2][3][4][5]. These environmental issues have potential impacts on the nearby residents [6][7][8][9], the long-term protection of historic buildings [10][11][12][13], and the operation of precision instruments [14,15]. To control the train-induced vibrations, various types of mitigation measures can be taken: wheel profiling and rail grinding [16][17][18][19], designing vibration mitigation measures on the track [20,21], using a propagation path [22,23], and using vibration receivers [24].…”

Section: Introductionmentioning

confidence: 99%

Study on Modelling Method of Resilient Mat Used under Floating Slab Track

Qiao³

et al. 2023

Materials

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Kelvin’s model is widely used to simulate the dynamic characteristic of a resilient mat under a slab track. To develop an effective calculation model for a resilient mat using a solid element, a three-parameter viscoelasticity model (3PVM) was employed. With the help of the user-defined material mechanical behavior, the proposed model was implemented in software ABAQUS. To validate the model, a laboratory test was performed on a slab track with a resilient mat. Then, a finite element model of the track-tunnel-soil system was built. The calculation results using the 3PVM was compared with those using Kelvin’s model and the test results. The results indicate that the 3PVM can better reflect the dynamic characteristics of resilient mat than Kelvin’s model, especially over 10 Hz. Compared with the test results, the 3PVM has an average error of 2.7 dB and a max error of 7.9 dB at 5 Hz.

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A novel formulation for transfer path identification and vibration prediction in the over-track building induced by trains

Cited by 10 publications

References 50 publications

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

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

Classification of External Vibration Sources through Data-Driven Models Using Hybrid CNNs and LSTMs

Study on Modelling Method of Resilient Mat Used under Floating Slab Track

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