Andrea Franza , Lars Vabbersgaard Andersen , Felipe Prada & Lau Fogh
The project tackles the geotechnical aspects of shared anchors for floating offshore wind turbines (FOWTs), needed by the EU to reach the targeted share of renewable energy. With a focus on anchors in sandy seabeds, the project will conceive and test an innovative grouped anchor concept.Description
01/01-2025 → 31/12-2027
Andrea Franza , Lars Vabbersgaard Andersen , Felipe Prada , Giuseppe Abbiati & Nikolaj Braüner Bjerge
This project focuses on improving the design of floating wind turbines (FOWTs) by developing a new approach for anchoring and mooring systems. These turbines are key to harnessing renewable energy from deep-water locations that are currently not suitable for traditional offshore wind farms. The main goal of the project is to create a new computational framework that can model multiple floating turbines connected by mooring lines to shared suction anchors. This model will help optimize the design of the anchoring systems for different environmental conditions.Description
01/11-2024 → 31/10-2027
Andrea Franza & Adriana Hernandez
collaboration with Ove Arup & Partners. Arup is an independent firm of engineers, consultants, designers, planners, and technical specialists offering a broad range of services worldwide.
Cities’ drive to become carbon neutral requires the enhancement of transport infrastructure. Underground construction of new metro tunnels and circular shafts is currently over-engineered due to empiricisms in design methods leading to unnecessary environmental and economic costs. The project objectives are to establish a data-driven analysis method that integrates analytical excavation-structure-interaction modelling for varying structural typologies (buildings, pipelines, tunnels) with real-world local and remote measurement and to implement this analysis method in the workflow of Arup by using a probabilistic approach that can optimize the design in terms of costs and carbon footprint while quantifying the influence of uncertainties in risk of damage assessment.Description
01/04-2024 → 01/04-2027
Andrea Franza , Assaf Klar & Nicolas von Solms
This project explored a new innovative technique for mechanical energy storage by forming subsurface structures at depths between 10m-100m within the (otherwise) permeable ground and deploying a compressed gas via a fluid system. In specific, the generation and operation of CO2-hydrate subsurface capsules, which is a scalable concept, can be an alternative or integration to power-to-x systems for offshore wind.Description
01/08-2023 → 31/08-2024
Kenny Kataoka Sørensen , Lars Vabbersgaard Andersen & Hans Henning Stutz
According to the Danish Energy Agency’s latest projection, the Danish power grid will reach 100% renewable energy no sooner than 2028. However, we can already now see a demand for a more flexible and secure power distribution due to the fluctuating energy production and consumption. Most experts suggest energy storage systems as the most sustainable, ideally suited and lasting solution.
The aim of this project is to develop and test critical parameters for a technology that enables storing energy in water according to the well-known principle of Pumped Hydro Storage (PHS) – but in an underground geomembrane, i.e. by installing a 10 x10 meter mock-up. The project focuses on geotechnical conditions and membrane design and will include the conduction of a range of examinations including the technological adaptation in the energy market in combination with various renewable energy sources and business cases.Description
01/09-2020 → 28/02-2022
Asger Gramkow , Lars Vabbersgaard Andersen , Kenny Kataoka Sørensen & Hans Henning Stutz
Soil-membrane interface testing and modelling in connection to underground Pumped Hydro Storage systemDescription
01/02-2019 → 30/06-2019
Kenny Kataoka Sørensen & Paulina Agnieszka Janusz
DHRTC Radical Innovation Spring (RIS) projectDescription
01/09-2018 → 30/11-2018
Jannie Knudsen , Kenny Kataoka Sørensen , Jørgen S. Steenfelt & Helle Trankjær
Industrial PhD project:
According to the Danish National Annex to Eurocode 7, part I, the shaft resistance for a bored cast-in-place pile should not be assumed to be greater than 30 per cent of the shaft resistance of the corresponding driven pile, and the toe resistance is maximised to 1000 kPa. Since 1977 this principle has been enforced (code requirement) in Denmark, allegedly due to execution problems encountered in one or two un-documented case histories.
Hence, it is widely recognised that this reduction in bearing capacity is believed to be overly conservative. If the bored cast-in-place pile is established correct, the reduction of the shaft resistance is still applicable due to limited understanding of the governing mechanism and limited knowledge of the complex soil-pile interaction.
A consequence of this lack of understanding is that bored cast-in-place piles are often designed too conservative, and the bored cast-in-place piles are built more expensive than what is required.
This Industrial PhD project will investigate the shaft and toe resistance of bored cast-in-place piles based on full-scale field tests, model field tests, geotechnical and structural monitoring, and develop a first order analytical method for determination of the shaft (and toe) resistance for bored cast-in-place piles.Description
01/06-2018 → 31/05-2021
Jakub Gabriel Kania & Kenny Kataoka Sørensen
Industrial PhD project:
Precast driven piles or cast-in-place bored piles are often used in connection to construction work on sites with soft soil conditions. If the upper layers of soft soil later experience settlement, then the piles will, in addition to the building load, also be affected by a downwards acting force (termed negative skin friction or down drag) resulting from the adhesion between the soil and the pile in those layers which settle relative to the pile.
Hence, a reliable assessment of negative skin friction is a vital part of pile design when piles are installed in soft ground conditions. However, current guidelines and design practice in Denmark are believed to be overly conservative due to limited understanding of the governing mechanism and limited knowledge regarding the effect of pile material and ground conditions on the development of negative skin friction. Especially the influence of bitumen coating on the development of negative skin friction is poorly understood and in Denmark and also generally in the Nordic countries, there exist only very limited documentation to prove the actual effect of bitumen coating.Description
01/10-2016 → 30/09-2019
European Regional Development Fund, Interreg V.
co-applicant, Danish coordinatorDescription
01/01-2016 → 01/01-2018
Danish National Advanced Technology Foundation Description
01/01-2013 → 01/01-2016
Dokumentation af 1-punkts flydegrænse og lineær fremregning til plasticitetsindeks på baggrund af dataindsamling fra GEO's database og litteraturstudie.Description
01/02-2012 → 31/01-2013
01/02-2012 → 01/05-2013
Verification/investigation into the correlation between the angle of shearing resistance and the plasticity index of heavily overconsolidated Danish claysDescription
01/02-2012 → 09/01-2013
Danish National Advanced Technology Foundation . Work package leaderDescription
01/01-2010 → 01/01-2014
European Regional Development Fund, Interreg IV. Work package leaderDescription
01/01-2010 → 01/01-2013
DSF. Work package leaderDescription
01/01-2009 → 01/01-2014
EFPDescription
01/01-2005 → 01/01-2007
