SECED 2015 was a two-day conference on Earthquake and Civil Engineering Dynamics that took place on 9-10th July 2015 at Homerton College, Cambridge.
This was the first major conference to be held in the UK on this topic since SECED hosted the 2002 European Conference on Earthquake Engineering in London.
The conference brought together experts from a broad range of disciplines, including structural engineering, nuclear engineering, seismology, geology, geotechnical engineering, urban development, social sciences, business and insurance; all focused on risk, mitigation and recovery.
SECED 2015 featured the following keynote speakers (affiliations correct at the time of the conference):
SECED allows the self-archiving of the Author Accepted Manuscripts (AAM) from the SECED 2015 Conference. This means that all authors can make their conference paper available via a green open access route. The full text of your paper may become visible within your personal website, your institutional repository, a subject repository or a scholarly collaboration network signed up to the voluntary STM sharing principles. It may also be shared with interested individuals, for teaching and training purposes at your own institution and for grant applications (please refer to the terms of your own institution to ensure full compliance).
To deposit your AAM, please adhere to the following conditions:
SECED allows authors to deposit their AAM under the Creative Commons Attribution Non-commercial International Licence 4.0 (CC BY-NC 4.0). The deposit must clearly state that the AAM is deposited under this licence and that any reuse is allowed in accordance with the terms outlined by the licence. To reuse the AAM for commercial purposes, permission must be sought by contacting seced@ice.org.uk. For the sake of clarity, commercial usage would be considered as, but not limited to:
Should you have any questions about our licensing policies, please contact seced@ice.org.uk.

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In order to effectively assess large fluid storage tank foundations under seismic loading, it is necessary to run a series of Dynamic Soil Structure Interaction (DSSI) analyses. Traditionally, the behaviour of the enclosed liquid is simulated using a lumped mass analogue representing the impulsive and convective masses. Although this method captures the overall response of the structure, the structural demand in the tank shell cannot be assessed as the analogue is dependent on the tank shell being considered as rigid. An alternative method has been developed that considers Fluid Structure Interaction (FSI) with the fluid explicitly simulated and in contact with the steel shell of the tank.
A comparison between the two analysis methods has been completed and the distribution of pile forces was found to be particularly sensitive to the approach used. The lumped mass model with a rigid base plate predicted significantly higher axial forces in the outer ring of piles. With the more representative stiffness in the FSI model, the tank base plate and concrete raft were allowed to dish. This mobilised the central piles to generate a more even distribution of forces, allowing the foundation to be optimised with potential for reducing material quantities whilst still achieving adequate behaviour.