The primary aim of the project is to develop a better understanding about key issues regarding the generation and propagation of railway vibration.
This project addresses the non-linear behaviour of track elements and the dynamic tunnel-soil-pile interaction for single as well as twin tunnels.
The main hypothesis of the proposed work is that the level of accuracy of predictions will be significantly improved by accounting for these issues when modelling underground railways vibration.
The hypothesis will be tested by a series of comparisons of the developed models against field measurements.
The following objects are set to achieve the aim of the project:
- Investigating the effect of pre-load and non-linear behaviour of resilient elements of tracks using excitation models, i.e. tracks on elastic foundations.
- Developing a detailed periodic Boundary Element (BE) model, which will be coupled to relevant structural elements, to account for the interaction between twin-tunnel, soil and piled-foundations.
- Delivering a fast running tool based on the wave-superposition method for calculating vibration transmitted to buildings on plied-foundations from surface as well as underground railways.