Professor in Civil Engineering
Academic Division: Civil Engineering
Research group: Structures
Telephone: +44 1223 3 32678
The overarching aim of Dr Lees' research group is to provide more sustainable infrastructure solutions. This is achieved through an improved understanding of existing infrastructure assets, the use of new materials and the creation of advanced structural systems. We have particular interests in concrete and FRPs (Fibre Reinforced Polymers) and investigating novel ways to combine these materials for further advantage.
Selected topic areas with links to current projects are as follows:
The use of advanced durable materials as prestressing tendons for concrete would potentially avoid the current problems associated with the corrosion of steel reinforcement. Such materials of particular interest in offshore applications.
Research that delivers improved analytical tools and experimental evidence for the more accurate assessment of existing structures has a direct impact on management strategies for existing reinforced concrete infrastructure.
With increased traffic loading, changes in design codes and the unexpected deterioration of structures, there is a tremendous need for ways of extending the lifetime of existing structures.
Reinforced concrete structures are unusual in that they are often designed to be cracked under service loading. However, the presence of cracks introduces significant numerical challenges when modelling the behaviour of RC structures.
Reinforced concrete is a complex material where time-dependent influences such as concrete creep change the load sharing between the concrete, any internal steel and, where present, external FRP reinforcement.
Additional research areas include:
Glass fibre reinforced polymer (GFRP) pipelines: Vast sums of money have been spent trying to mitigate the exposure of steel pipelines to corrosive environments, both internal and external. Pipelines made with FRPs will have longer predicted lifetimes and lower installation and maintenance costs.
Sustainable concrete: Globally, 1.5 billion tonnes of cement are produced each year. As such, any environmental savings in terms of the energy consumption during the manufacture of concrete or the incorporation of waste materials into concrete will have a significant impact.
Energy, transport and urban infrastructure
Lifetime extension of reinforced concrete structures; strengthening and repair of existing structures; advanced materials for new construction.
Manufacturing, design and materials
Engagement mechanisms and structures in complex consortia to maximise commitment to portfolio planning and research uptake from commercial and academic stakeholders.
- Bridge Engineering
- Structural Theory
- New Materials in Structural Engineering
- First year Structural Mechanics Course
- First year Structural Design Course
- Fourth year module 4D7 - Concrete and Masonry Structures
Dr Janet Lees is a Reader in Civil Engineering at the University of Cambridge and is a Chartered Engineer. Before embarking on a career in research, she spent three years in Industry working both for a Consultant and for a Contractor. She received her PhD in Structural Engineering from the University of Cambridge. She is the leader of thewithin the Civil Engineering Division. The main research interests of her group relate to reinforced concrete and the use of advanced materials in construction. Ongoing project areas include the strength assessment of existing reinforced concrete infrastructure, fibre reinforced polymer (FRP) strengthening systems, the time-dependent behaviour of reinforced concrete and carbon FRP prestressed concrete structures.
She is a Fellow ofand a Director of the University of Cambridge .