Measurement and analysis of vibrations in a residential building constructed on an elevated metro depot

Cao, Ziping; Guo, Tong; Zhang, Zhiqiang; Li, Aiqun

doi:10.1016/j.measurement.2018.05.010

Cited by 59 publications

(19 citation statements)

References 14 publications

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“…In addition, because of the uncertainty of the numerical model parameters, additional runs may be required to establish the sensitivity of the predictions to variations in different model parameters. To reduce computing time, a lot of studies have been carried out to simplify and optimize the modeling for finite and boundary element models (Galvín and Domínguez, 2009;Sheng et al, 2006;Verbraken et al, 2011), 2.5 dimensions finite element models (François et al, 2010;Liang et al, 2017), finite difference models (Katou et al, 2008), dynamic stiffness matrix methods (Guo et al, 2017), semianalytical models (Sheng et al, 2004) and theoretical models (Cao et al, 2017(Cao et al, , 2018.…”

Section: Introductionmentioning

confidence: 99%

Efficient impedance model for the estimation of train-induced vibrations in over-track buildings

Zou

Moore

Sanayei

et al. 2020

Journal of Vibration and Control

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Rapid growth and the urban development of Chinese megacity in recent decades have led to land utilization challenges and the need for over-track buildings above metro depots that are part of the subway systems in these cities. Frequent subway operations into and out of the depots, which generate excessive vibration that transmits into the over-track buildings, can have adverse effects on the buildings’ occupants in terms of feelable vibration and noise. An efficient modeling procedure is presented for estimating vibration levels within the buildings before construction to determine whether vibration mitigation is required. Models were developed and validated based on vibration measurements in low-rise and high-rise buildings over a metro depot in Shenzhen, China. Impedance models were developed that characterize vibration transmission through the primary support columns or load-bearing walls into the building floors. Inputs to the model are vibration levels at the buildings’ foundation where the model estimates the transmission through individual support structures to the upper floors. Vibration estimates at different elevations within the building were compared with the measured levels during train pass-bys under the buildings with good agreement. Based on axial wave transmission impedances for column or load-bearing wall segments and simple impedance expressions for building floors, the closed-form analytical impedance model is an efficient and cost-effective tool for estimating floor vibration before construction.

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Section: Introductionmentioning

confidence: 99%

Efficient impedance model for the estimation of train-induced vibrations in over-track buildings

Zou

Moore

Sanayei

et al. 2020

Journal of Vibration and Control

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“…Field measurement is recognized to be the most effective method to determine the train-induced vibration. A great number of field measurements have been performed to understand the vibration characteristics in the tunnel or on the ground surface [15][16][17][18][19][20][21]. For example, Liu et al [19] measured the vibration accelerations of different track patterns in the metro tunnel and compared their discrepancy in vibration reduction.…”

Section: Introductionmentioning

confidence: 99%

“…Zou et al [20] measured the vibrations of ground surface and nearby buildings in the metro depot and also analyzed the changes of acceleration, vibration frequency, and sound level. Cao et al [21] measured the vibration in a residential building on an elevated metro depot; moreover, large-scale international tests were conducted in Europe to analyze the characteristics and uncertainties in the ground-borne vibration [19]. Besides, some researchers adopted the field vibration test to verify the feasibility of a 2.5D FE-BE model based on the field measurement data [10,22].…”

Section: Introductionmentioning

confidence: 99%

Field Measurement and Numerical Simulation of Train‐Induced Vibration from a Metro Tunnel in Soft Deposits

Huang

Zhang

et al. 2021

Advances in Civil Engineering

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Train-induced vibration is increasingly attracting people’s concern nowadays. In the coastal areas, many metro tunnels are built in the soft deposits, so the train-induced vibration effect is more serious. Nevertheless, the existing research studies mainly focus on the dynamic responses in the tunnel or on the ground surface while vibration characteristics in the ground are seldom studied. In this paper, a comprehensive field measurement was performed by installing accelerometers in the tunnel and soil layers and on the ground surface to capture the response characteristics of the track-tunnel-ground system. Elastoplastic numerical simulation considering the soil-water coupling was conducted to reveal the responses of acceleration, dynamic displacement, and excess pore water pressure using FE code DBLEAVES. Measurement results indicate that high-frequency contents (>500 Hz) attenuate rapidly in the propagation process; the dominant frequency of the rail concentrates in the middle- and high-frequency bands, about 25–400 Hz and 1000–1500 Hz, while the frequencies of the track bed, soil layers, and ground surface drop to below 400, 200, and 100 Hz, respectively. The vertical ground acceleration decreases like an arc in the transverse direction while there is transverse acceleration amplification phenomenon at a distance from the upper haunch and lower haunch of the tunnel. Overall, the area affected by train vibration in the soft deposits is about 30 m away from the metro tunnel. Numerical simulation based on soil-water coupled analysis is feasible to model the vibration characteristics in the soft deposits and confirms that there is acceleration amplification in the ground. Moreover, numerical results indicate that excess pore water pressure can be accumulated during each train vibration, so the train-induced settlement will be a potential problem in the long term for the metro tunnel.

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“…Cao et al. 7 presented vibration tests in a seven-storey residential building constructed on an elevated metro depot, noting that even though the train speed was as low as 5 km/h, the vibration levels of the bottom two floors exceeded the limit value, and this case was especially obvious for the track located just above the test area.…”

Section: Introductionmentioning

confidence: 99%

A frequency domain model for analysing vibrations in large-scale integrated building–bridge structures induced by running trains

Zhang

Ruan

Zhao

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part F:

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Integrated building–bridge structures are increasingly common in high-speed railway stations, where the elevated track floor is directly subjected to train–track dynamic forces that result in excessive vibrations. The common methods of predicting the train-induced vibrations in large-scale IBBS are implemented in the time domain and can have prohibitively long computation times. This paper presents a frequency domain model for the vibration analysis of large-scale IBBS, with the aim of reducing the computation time while retaining sufficient accuracy. The model consists of three coupled subsystems: train, track, and IBBS. The train and track subsystems are investigated analytically, and the IBBS subsystem is solved numerically using a finite element method. The receptance technique is introduced to obtain the wheel/rail force. The force transmitted to the floor slab is treated as the vibration source of the IBBS subsystem. The simulated vibration levels in the IBBS subsystem are compared with those obtained from in situ measurements, and a good agreement is observed in terms of both magnitude and frequency dependence. The vibration responses of the IBBS subsystem at different locations of the track floor and the waiting floor are compared, and the influence of the track position is investigated. Finally, a parametric analysis is conducted with the aim of formulating anti-vibration measures, in which the carbody acceleration, rail displacement, and ballast acceleration are considered as key indicators. The force transmission, vibration transmission and IBBS vibrations are also investigated. The results indicate that using a ballast mat and enlarging the column cross-section are the two most promising measures for reducing the vibration levels.

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Measurement and analysis of vibrations in a residential building constructed on an elevated metro depot

Cited by 59 publications

References 14 publications

Efficient impedance model for the estimation of train-induced vibrations in over-track buildings

Efficient impedance model for the estimation of train-induced vibrations in over-track buildings

Field Measurement and Numerical Simulation of Train‐Induced Vibration from a Metro Tunnel in Soft Deposits

A frequency domain model for analysing vibrations in large-scale integrated building–bridge structures induced by running trains

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