An efficient and modular numerical prediction model is presented to predict vibrations and re-radiated noise in buildings due to metro trains. The approach comprises of three weakly coupled problems: the dynamic vehicle-track-tunnel-soil interaction problem, the dynamic soil-structure interaction problem and the calculation of the acoustic response inside the rooms. The three-dimensional dynami...

The paper is focused on the assessment of seismic fragility curves for circular tunnels under moderate to severe earthquakes with aim improving reliability risk underground infrastructural networks. Non-linear two-dimensional dynamic analyses were performed different tunnel and soil configurations by using finite-difference method implemented in Flac2D software. applied input motions selected c...

In this paper, long-period ground motion is used as the dynamic input to study performance evolution of curved tunnel lining structure under seismic wave propagation excitation. This paper presents numerical studies on waves, considering effect, and aims illustrate response principle structural failure mechanism structures motion. Firstly, based analysis method, balance equation a effect was an...

Input of sinusoidal excitation with specified frequency is an optimal way to capture the mechanism soil-tunnel interaction. Focusing on relationship between input motions and dynamic response a system, this study carried out series shaking table tests both free-field model soil–tunnel in background tunnel soft ground. To detect detailed deformation segmental linings, refined lining ring was dev...

The unreasonable setting of thermal insulation layer in high cold tunnels not only increases the maintenance cost tunnels, but also weakens anti-freezing and resistance tunnels. In order to optimize an Alpine tunnel, relying on Dabanshan tunnel Qinghai Province, three schemes radial longitudinal region were adopted, temperature field surrounding rock was numerically analyzed. results show that ...

Extracting complete cross-sectional geometric features from the large amount of point cloud data acquired by laser scanners plays an important part in detection deformations tunnel inspection projects. Tunnel cross-sections have symmetrical features, and information is traditionally collected manually. The traditional manual extraction clouds inefficient limited subjectivity operators when addr...