The study on accurately predicting the vibration for proposed structures induced by subway has significant theoretical and engineering application value.At present,field measurements are mainly utilized to validate the numerical simulation and seldomly employed in the calibration process of numerical models.In order to accurately predict the vibration for proposed structures,a prediction method for metro train-induced structural vibration based on field measurement and finite element simulation is proposed in this study.Field measured vibrations induced by subway prior to the construction of underground structures are conducted.Subsequently,the transfer function of the test site is calculated using a tunnel-layered soil finite element model.The vibration source is determined based on the inversion analysis combing transfer function and field measurement.The inverted vibration source is used in the finite element model encompassing structure for vibration prediction.The result shows that the predicted vibrations of underground structures agree very well with the measurements,which provides a reliable method for predicting structure vibrations induced by operation of nearby metro train.
关键词
振动/现场实测/反演/动力有限元/地铁隧道
Key words
vibration/field measurement/inversion analysis/dynamic finite element method/metro tunnel
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