Publications by authors named "Zhoujian You"
Compared with the general urban rail transit, some of the current rapid urban rail transit can reach a maximum speed of 140 km/h when the train is running, which exceeds the speed level of the general urban rail transit. To consider the influence of different speeds and loads on the vibration of viaducts and the surrounding soil environment, this paper establishes a three-dimensional finite element model of rail-viaduct soil. The results show that: the frequency domain acceleration of each measurement point increases with the increase of train speed; except for the measurement point which is 20 m away from the centerline of the track, the frequency domain speed of each measurement point increases with the increase of train speed; the frequency domain speed under the low-frequency component of the viaduct measurement point increases with the increase of train loading, and the growth rate is obviously larger than that of the middle and high frequency bands, and the frequency domain speed of the measurement points in the site also increases with the increase of train loading, and the growth rate of the low-frequency band is obviously larger than that of the middle and high frequency bands.
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- The study developed an integrated numerical model to analyze the vibration isolation effects of composite walls on vibrations from suburban railway deep tunnels, focusing on train and soil interaction.
- The model's reliability was confirmed with real data, and the research explored various parameters, such as thickness and material proportions of EPS and concrete in the vibration isolation walls.
- Findings revealed that deeper vibration isolation walls provide better isolation, and composite walls outperformed single-material walls in reducing peak acceleration and velocity by over 16%, along with a notable 30% enhancement in peak displacement effects.