Exchange-Risk
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19/06/2020
Most pleased that several of our EXCHANGE-Risk project novelties have been analyzed and acknowledged by the European Commission's Innovation Radar for:
- Improved ground motion simulation accounting for effects of kinematic interactions on extended structures
- Comprehensive database of European pipeline network
- Impact of built environment on soil-pipe interaction
- Improved methodology for efficient stochastic assessment of post earth-earthquake condition of buried steel pipelines
- Improved soil-pipeline interface for preventing pipe fracture at soil discontinuities during strong earthquake shaking
More: http://www.innoradar.eu/
22/05/2020
All Exchange-Risk publications on the seismic risk of natural gas pipeline networks are now freely available through the project website. The 25 quality journal papers, 24 peer-reviewed publications in conference proceedings and 2 book chapters reflect the excellent 4-year collaboration of our EU consortium and pave the way for further innovation to mitigate the impact of natural hazards and enhance the resilience of lifelines in seismic regions.
Download area: http://www.exchange-risk.eu/publications1.html
14/01/2020
The final workshop of our EU-funded project Exchange-Risk summarised the findings of an amazing research journey that brought together scientists from Europe, Canada and USA. 26 journal papers in top journals, approx. 200 months of scientifc secondments among partners, 4 workshops, 30 conference papers and 3 novel experiments. Most importantly, it demonstrated our willingness to keep on working together towards resilient energy infrastructure.
In the context of WP3 and the application of hybrid simulation on seismic response of multi-supported pipelines, Univ. of Toronto, University of Bristol and University of Patras performed a test on an actual pipeline configuration deducted from a gas facility.
The selected critical scenario included a pressurised pipeline, comprising three straight parts and two 90º-elbows, bridging a compressor-housing platform to a re-liquefication condenser structure.
The two structures and part of the bridging pipeline were treated via hybrid simulation: the structures were numerically modelled while the pipeline was physically tested in the lab. Lateral displacements, resulting from the numerical models (developed by Univ. of Toronto and Univ. of Bristol) of the supporting structures subjected to seismic excitation and handled by the University of Toronto, were determined at each time step of the excitation, communicated (via network) to the University of Patras laboratory controller and applied to the specimen. The measured reaction force was fed back to the numerical solver for advancing the solution to the next time step. The deformation of the most critical parts – the elbows – was monitored through both an ensemble of sensors of various types and digital image correlation techniques.
Credits to Prof. Stathis Bousias and his group, Prof. Oh-Sung Kwon, Prof. Anastasios Sextos Research Group and our super hard working PhD students Jamin Park and 张子亮
30/11/2018
Timelapse of our experiment to verify the amount of seismically-induced axial compression that develops on a natural gas transmission pipeline at the interface of abruptly changing soil profiles. Fantastic work by Nikos Psyrras as part of his PhD that fully verifies our numerical findings.
Research funded by the European Commission (H2020 project Exchange-Risk coordinated by the University of Bristol). Many thanks to Adam Crew, Matt Dietz for operation and George Mylonakis, Dimitris Karamitros for advisory.
https://www.youtube.com/watch?v=OFilP-t2_rs&feature=youtu.be
Shake Table Tests of Gas Transmission Pipelines Crossing Laterally Graded Soil Overview, time lapse of preparation works and select results of an experimental program conducted at the Earthquake and Large Structures (EQUALS) laboratory ...
24/11/2018
Can a natural gas pipeline buckle under seismic loading?
Our latest Exchange-Risk publication available for unrestricted download: https://authors.elsevier.com/a/1Y2t-_65by19DO
16/10/2018
New paper published and software just released
https://authors.elsevier.com/a/1XqyaW4G4JLeS as a partial outcome of Exchange-Risk by Yorgos Baltzopoulos, RobertoBaraschino, Iunio Iervolino and Dimitrios Vamvatsikos
Dynamic analysis of single-degree-of-freedom systems (DYANAS): A graphical user interface for OpenSees Non-linear dynamic response of SDOF systems enjoys widespread application in earthquake engineering, sometimes as a testing ground for cumbersome anal…
20/09/2018
Another exciting large-scale experiment of our EU project Exchange-Risk is under preparation at the Structures Lab of the University of Patras (Prof. Stathis Bousias) on natural gas pipeline bents. Collaboration with the University of Edinburgh (Prof. Spyros Karamanos).
16/09/2018
Mini-hybrid testing setup for the purposes of the MSc Thesis of 张子亮 at the University of Bristol aligned with the scientific objectives of our EU project Exchange-Risk.
Many thanks to Yorgos Baltzopoulos and Oh-Sung Kwon
https://www.youtube.com/watch?v=E-FOdySP4YM&feature=youtu.be
Mini scale prototype for hybrid simulation This video comes as a part of Ziliang Zhang's dissertation submitted to the University of Bristol in Sep, 2018, in accordance with the requirements of the de...
31/08/2018
Preparations accelerate for our dynamic test on soil-natural gas pipe interaction in soil deposits with abruptly changing soil properties. With Nikos Psyrras, Adam Crew, Matt Dietz, Tony Horseman (also George Mylonakis & Dimitris Karamitros)
EU Research Project: Exchange-Risk (PI: Anastasios Sextos Research Group) www.exchange-risk.eu
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