The dynamic loading of rail track and supporting ballast due to the passage of rail traffic induces vibrations and the propagation of waves through the shallow subsurface. In order to assess, and mitigate for, surface vibrations and their impact on surface structures, it is necessary to investigate the mechanisms and characteristics of wave propagation in the ground. This project utilises numerical and geophysical modelling techniques to investigate the propagation and monitoring of waves due to rail traffic. It has a particular emphasis on the impact of surface (ballast-subsoil interface) and subsurface heterogeneities at different scales, as well different soil types and groundwater level, on wave propagation.

This project aims to:

• Utilise numerical models and geophysical data to investigate wave propagation in the shallow subsurface and its influence on the magnitude and extent of surface vibrations;
• Perform 3D modelling of wave propagation using the random finite element method (RFEM), to develop guidelines for engineers on the input parameters for numerical models relating to, for example, domain size, subsoil schematisation and properties, and discretisation level;
• Utilise 3D RFEM modelling in conjunction with geophysical data to identify optimal locations for data acquisition;
• Develop a strategy for subsoil schematisation and parameterisation at a given location, based on numerical models constrained by geophysical measurement data.

The position will be based within the Section of Geo-Engineering in the Department of Geoscience and Engineering, in collaboration with the Section of Applied Geophysics and Petrophysics (in the same department).

The project will be undertaken in close collaboration with other projects within the research programme STEM  – “Spoortrillingen emissie model (Track vibration emission model)” – a joint initiative between ProRail, Deltares and TU Delft. It will also interact with projects within the research programme RESET – “Reliable embankments for the safe expansion of rail traffic” – a joint initiative between the same three partners.

We are looking for a candidate with an MSc degree in Civil Engineering, Geotechnical Engineering, Applied Geophysics or a related field. The candidate should have a strong background in numerical modelling and soil mechanics, and have a genuine interest and aptitude for the development, computer implementation and application of numerical and probabilistic-based algorithms. The candidate should have excellent computer programming skills, proficiency in verbal and written English, and experience with team-work.

Doing a PhD at TU Delft requires English proficiency at a certain level to ensure that the candidate is able to communicate and interact well, participate in English-taught Doctoral Education courses, and write scientific articles and a final thesis. For more details please check the Graduate Schools Admission Requirements.

Fixed-term contract: 4 years.

Doctoral candidates will be offered a 4-year period of employment in principle, but in the form of 2 employment contracts. An initial 1,5 year contract with an official go/no go progress assessment within 15 months. Followed by an additional contract for the remaining 2,5 years assuming everything goes well and performance requirements are met.

Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities, increasing from € 2541 per month in the first year to € 3247 in the fourth year. As a PhD candidate you will be enrolled in the TU Delft Graduate School. The TU Delft Graduate School provides an inspiring research environment with an excellent team of supervisors, academic staff and a mentor. The Doctoral Education Programme is aimed at developing your transferable, discipline-related and research skills.

The TU Delft offers a customisable compensation package, discounts on health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged. For international applicants we offer the Coming to Delft Service and Partner Career Advice to assist you with your relocation.

Delft University of Technology

Delft University of Technology is built on strong foundations. As creators of the world-famous Dutch waterworks and pioneers in biotech, TU Delft is a top international university combining science, engineering and design. It delivers world class results in education, research and innovation to address challenges in the areas of energy, climate, mobility, health and digital society. For generations, our engineers have proven to be entrepreneurial problem-solvers, both in business and in a social context.

At TU Delft we embrace diversity as one of our core values and we actively engage to be a university where you feel at home and can flourish. We value different perspectives and qualities. We believe this makes our work more innovative, the TU Delft community more vibrant and the world more just. Together, we imagine, invent and create solutions using technology to have a positive impact on a global scale. That is why we invite you to apply. Your application will receive fair consideration.

Challenge. Change. Impact!

Faculty Civil Engineering & Geosciences

The Faculty of Civil Engineering & Geosciences (CEG) is committed to outstanding international research and education in the field of civil engineering, applied earth sciences, traffic and transport, water technology, and delta technology. Our research feeds into our educational programmes and covers societal challenges such as climate change, energy transition, resource depletion, urbanisation and the availability of clean water, conducted  in close cooperation with a wide range of research institutions. CEG is convinced that Open Science helps to achieve our goals and supports its scientists in integrating Open Science in their research practice. The Faculty of CEG comprises 28 research groups in the following seven departments: Materials Mechanics Management & Design, Engineering Structures, Geoscience and Engineering, Geoscience and Remote Sensing, Transport & Planning, Hydraulic Engineering and Water Management.

Click here to go to the website of the Faculty of Civil Engineering & Geosciences.