Chair: Piroozan Aminossehe (Independent Civil and Structural Engineer) | Co-chair: Andrew Morrison (MMI Engineering)
The SECED 2019 Organising Committee invites papers on the effects of the dynamic loadings on structures as given below:
- Blast: Structural responses subject to detonating explosions such as bombs or TNT, deflagrating explosions such as hydrogen explosions in a nuclear power station or hydrocarbon gas explosion in a petrochemical facility or other types of explosion such as dust explosions.
- Impact: Structural responses subject to impact loadings such as plane crashes on nuclear facilities, hammer drop loading on the anvil structures and foundation or vehicle impacts.
- Vibration: Structural, machinery, delicate electronic devices and human responses, serviceability and limits subject to vibration loadings which are induced by different vibration sources such as large turbines and compressors mounted on table top, diesel engines, electric motors and walking.
Note: a separate session on Vibration Serviceability is also planned.
Chair: Crescenzo Petrone (Willis Re) | Co-chair: Tristan Lloyd (Ascot)
Catastrophe models are increasingly being used by stakeholders in several fields for an increasing number of purposes, such as risk management, portfolio optimization, reinsurance purchase, insurance pricing, etc. The session is targeted to studies on any aspects of hazard, vulnerability, exposure and financial modelling within catastrophe models, as well as on the development and evaluation of existing catastrophe models. We also invite potential speakers to present case studies on the use of catastrophe models in decision making and in developing a ‘view of risk’.
Chair: Tim Courtney (Horizon Nuclear Power) | Co-chair: Richard Fowler (ONR)
The objective of the any nuclear safety related design is to provide for the safe and effective operation of the nuclear facility or site, minimising the likelihood of accidents and ensuring that their consequences can be reliably mitigated. These designs must meet stringent requirements for withstanding external hazards, and seismic hazard often is one of the more challenging of these hazards to design against.
In recent years the UK nuclear new build programme has helped bring a renewed focus to the seismic area. Within the global nuclear industry the inputs to seismic design, including characterising the site hazard, developing appropriate design inputs, dynamic analysis, equipment qualification, as well as seismic PSA continue to be areas of research and development.
Abstracts are therefore invited on any aspects of the above where technology has been applied in the nuclear context.
Chair: Mark Scorer (Atkins) | Co-chair: Matthew Free (Arup)
The field of earthquake disaster risk reduction, reconnaissance and recovery is evolving rapidly as developments in science, engineering and technology provide advancements in mitigation, preparedness, response and recovery. This session aims to stimulate discussion and knowledge sharing on a range of these aspects and could include lessons learnt and data collection from previous earthquakes to new reconnaissance techniques, training or civil protection for future events.
Chair: Tiziana Rossetto (UCL) | Co-chair: Vitor Silva (GEM)
Earthquake fragility functions are probabilistic expressions of the likelihood that an asset will sustain damage under increasing levels of earthquake excitation. These can be derived for various assets exposed to earthquakes (e.g. residential and commercial buildings, industrial facilities, schools, hospitals, bridges) using diverse techniques, including the statistical elaboration of past earthquake damage data, the numerical analysis of structural models, expert elicitation, and combinations of these. Vulnerability functions instead express the likelihood of sustaining losses under increasing earthquake excitation. These losses are usually expressed in terms of the 3D’s: dollars, deaths and downtime. Vulnerability functions can be derived indirectly from fragility functions using a damage to loss relationship, or else can be directly derived using a number of techniques similar to those used for fragility analysis. Abstracts are invited that present new fragility or vulnerability functions for any asset (be it buildings, people, crops or critical infrastructure). In particular, papers are welcome that present new approaches to the derivation of such functions, look at fragility or vulnerability under sequential or multiple earthquake induced hazards, or that explore how to better capture sources of uncertainty in fragility and vulnerability analysis.
Chair: Susanne Sargeant (British Geological Survey) | Co-chair: Colm Jordan (British Geological Survey)
There are many ways to characterise and monitor earthquake-triggered hazards (e.g. landslides, liquefaction and tsunami) and their impacts. This is a complex area where there are many unknowns about the hazards themselves, how they may interact / cascade and how they could affect the built environment. We are interested to hear about new developments in this field and how they can be applied in the UK and data-poor contexts, and welcome papers on both the hazards and attempts to characterise their impacts on buildings, infrastructure and communities across a range of scales.
Session 1: Chair: Stavroula Kontoe (Imperial College London) | Co-chair: Susana Lopez-Querol (UCL)
Session 2: Chair: Jonathan Knappett (Dundee University) | Co-chair: Paul Taylor (Atkins)
The geotechnical sessions will cover a broad range of topics related to earthquake engineering, including (but not limited to): Site response analysis, site effects and microzonation; liquefaction and liquefaction mitigation; seismic stability of natural slopes, dams and embankments; case histories from recent earthquakes; seismic response of tunnels, foundations and retaining structures; recent developments in performance-based design and design codes. Abstracts are invited on any application related to these topics, as well as on any development of experimental, analytical or numerical methodologies (including constitutive modelling) employed in geotechnical earthquake engineering.
Note: a separate session on Soil-Structure Interaction is also planned.
Chair: Chris Browitt | Co-chair: Alice Walker
Induced or natural seismicity?
It has long been established that we cause earthquakes by introducing stresses or triggering existing ones, including in the mining, reservoir impoundment and hydrocarbons sectors. In the UK, we have experienced them extensively in mining, and also in hydrofracking for geothermal and shale gas, and have faced the social impacts and the need to carefully discriminate induced from natural events. We are at the beginning of the shale gas and geothermal revolution and would, particularly, welcome presentations from those with experience elsewhere in the world, including on the social side.
Chair: Stergios Mitoulis (University of Surrey) | Co-chair: Sean Wilkinson (Newcastle University)
Infrastructure systems are essential components of modern society and for this reason are usually referred to as lifelines in earthquake engineering. Their role in providing essential services to people, business, industry and commerce can lead to disproportionate consequences for communities when they fail. Due to the interdependent nature of these systems these consequences can be further amplified as relatively small shocks cascade through multiple systems. Even though our infrastructure systems are an essential part of modern life, their resilience and the subsequent cascade of effects that can ripple through our society are poorly understood as is the characterization of their vulnerabilities and hazards that these geographically distributed systems are exposed to. Furthermore, the definition and typologies of infrastructure systems are expanding as new systems emerge and our society becomes ever more connected. This session is calling for papers that can contribute to the understanding of how infrastructure systems behave during an earthquake or/and induced primary and secondary hazards (e.g. fault rupture, landslides and rockfalls, subsidence and lateral spreading, liquefaction, flooding, tsunami or fires), how to model infrastructure vulnerability, risk and resilience, how to understand and attribute infrastructure failure to downstream social consequences or other impacts and how to better prepare our infrastructure systems for future events by either new technologies or better management protocols. Qualitative papers and case studies are welcome in this session. This special session is inviting contributions from both academic and industry experts, operators and owners of infrastructure systems as well as insurers and re-insurers.
Chair: Carmine Galasso (UCL) | Co-chairs: Flavia De Luca (University of Bristol), Ricardo Monteiro (School for Advanced Studies IUSS, Pavia, Italy)
Developing countries are disproportionately affected by natural hazards and lack in coping capacities. This combination sets back progress on poverty alleviation and slows long-term development.
Probabilistic risk assessment models are increasingly popular tools for estimating potential human and economic loss due to natural hazards. Risk modelling for developing countries presents specific challenges in terms of quantity and quality of the available input data. Widening the types of hazards and ensuring models are contextualized to local needs are also crucial.
This session aims at bringing together researchers from different fields of probabilistic risk assessment, with emphasis on applications with high scientific and practical interest for developing countries. We welcome contributions dealing with both individual and combined (e.g. cascading and multiple) natural hazard, at different spatial scales (from a single asset to portfolio of buildings and spatially-distributed infrastructure).
Chair: Georgia Thermou (Nottingham University) | Co-chairs: Maurizio Guadagnini & Iman Hajirasouliha (University of Sheffield); Stavroula Pantazopoulou (York University, Canada); Thanasis Triantafillou (University of Patras, Greece)
Most of the existing building stock was designed according to old standards using poor material and construction practices. Deterioration of structural elements due to ageing and aggressive environmental conditions is another factor that can significantly increase the vulnerability of existing structures. This is a rather alarming issue considering the socio-economic impact of severely damaged buildings or collapses in future earthquake events. Seismic assessment and retrofitting for enhancing the performance of deteriorated or seismically deficient structures is the only viable solution. This session aims to attract abstracts on the development of seismic assessment and retrofit design methodologies, on the analytical and/or experimental investigation of retrofitted structural members and structures using innovative or traditional materials, and on the numerical FE modelling of various intervention methods. Applications could include various types of structures (e.g. residential buildings, structures of cultural heritage, bridges, industry or nuclear-related structures) made of any kind of structural material (e.g. concrete, steel, masonry, timber).
Session 1 (General): Chair: Paul Doyle (Jacobs) | Co-chair: Damian Grant (Arup)
Session 2 (Resilient Steel Structures): Chair: Fabio Freddi (UCL) | Co-chair: Ahmed Elghazouli (Imperial College London)
For this session, we invite contributions from both academic and industry experts, focusing on any aspects of the seismic analysis, design and assessment of structural systems, ranging from conventional buildings to specialised structures such as dams, wind turbines and nuclear power plant, and covering all approaches, be they linear or non-linear; conventional or stretching the boundaries of what is possible.
Analysis methods may support the design of new structures or the assessment of existing structures. Validation of models is essential if the results are to be believed, and papers on this subject are welcome. Experience with applying the new version of ASCE 4 would also be beneficial. Papers may be based upon implementation of particular codes; or they be based upon experience of overcoming a particular problem. Authors may also wish to address the assumptions embedded in analysis models, and how they can be interpreted in the real design. Papers showing how ductility or other innovative structural solutions have been incorporated into real structures would also be welcome, as would papers appraising existing structures.
We also invite papers for a special session on innovative steel and steel-concrete composite structures designed with the aim of increasing structural resilience. Significant effort has been made to improve structural performance of buildings against seismic events. However, so far, the design philosophy has focused on ensuring the life safety of the occupants, while very little consideration was paid on preserving the structures’ integrity. Innovative structural systems should aim at the definition of ‘minimal damage structures’, which are able to minimize both social and economic losses.
Chair: Guillermo Aldama-Bustos (Jacobs) | Co-chair: Carmine Galasso (UCL)
Engineering Seismology is the link between Seismology and Earthquake Engineering. This involves the understanding and characterisation of seismic sources, ground motion propagation from source to site, characterisation of the ground motion at the site, and how the ground motion is evaluated for engineering design. Engineering Seismology is therefore related to the hazard of earthquakes and its assessment. Abstracts are invited on any aspects of Engineering Seismology field and seismic hazard evaluation including, but not limited to: seismic source characterisation, earthquake catalogues (instrumental and macroseismic data), ground motion characterisation, ground motion prediction, seismic hazard assessment, and determination of seismic loads (including selection, modification and simulation of ground-motion time histories).
Chair: Hamid Ahmadi (TARRC) | Co-chair: Damian Grant (Arup)
Seismic protective devices are used in both the design of new structures and the retrofit of existing structures to control the dynamic response in earthquakes, and mitigate seismic risk. Abstracts are invited on any aspect of the design, analysis or testing of seismic devices, their implementation in real projects or new, untested concepts. Types of devices could include (but are not limited to) seismic base isolation, active or passive control systems, damping devices (viscous, viscoelastic, hysteretic), and replaceable plastic fuses. Applications could include buildings, bridges, nuclear-related structures, examples from the oil and gas industry, equipment or cultural heritage.
Chair: Andreas H. Nielsen (Atkins) | Co-chair: Andrew Thomson (Atkins)
Soil-structure interaction (SSI) is known to affect the response of heavy structures founded on soft soils and buried structures. Examples include nuclear power plants, dams, tunnels and bridges. The SECED 2019 Organising Committee invites abstracts on any aspect of SSI including numerical analysis of the combined soil-structure system, field measurements, shaking table testing, and application of code-based criteria (e.g. ASCE 4). New or innovative methods for modelling partially embedded structures with large raft foundations in a multi-step analysis would be of interest, as would other methods for overcoming the limitations of multi-step analysis. Papers demonstrating the practical application of analysis methods, and the approaches taken to validating the results of the analysis, are also welcome.
Chair: Ian G. Smith (Atkins) | Co-chair: Dave Cotton (Atkins)
Vibration serviceability is the study of the whole field of environmental vibration, both natural and induced, and its adverse consequences on humans and sensitive devices, such as machinery. This includes the interaction of humans with our built environment and infrastructure. Whilst vibration serviceability relates to the more usual areas of structural dynamics and control, it also includes disciplines such as psychology, physiology, biomechanics, human comfort, architecture for well-being and health. Research in vibration serviceability looks to frame our future built environment through study, experiment, research, and the application of these subjects, engaging tools such as in-situ experimentation, physical and computer simulation of structures, and virtual reality based studies of the human experience within the built environment.