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Work Package 3

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The work in WP1 and WP2 provides detailed models of the generation and propagation of ground-borne vibration that would serve as a benchmark for the work in WP3. The models developed in WP3 will be incorporated in the Pipe in Pipe (PiP) model, and it will be released at the end of the project.

The main tasks of WP3 are:

  • Developing computationally efficient models for single and multiple piled-foundations, by using the theory of joining subsystems and calculating transfer functions of soil based on the response of a sphere in a multi-layered half-space.
  • Developing a computationally efficient model for a twin-tunnel embedded in a multi-layered half-space, by extending the method presented by Kuo et al. (2011).
  • Coupling a building model, developed by the dynamic stiffness method, to the coupled tunnel-soil-pile system.
  • Coupling of track models using simplified approaches to those used in WP1.
  • Validating the models against experimental results of Aecom and Arup.
  • Carrying out a parametric study for the properties of soil, tunnel, piles and building.
  • Developing a user interface and a user manual of the extended version of the PiP model.

One of the outputs of WP3 is the MOTIV software.

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