Explosions in a denser urban environment
With the aim of making attractive land space available for further development, there is today a desire in many cities to implement a densification of the existing urban environment. However, such densification, e.g. street overbuild, leads to a reduced free distance between buildings and transport route, which results in increased requirements against exceptional accidents such as explosions. To create an optimal overall solution for such an accidental scenario it is necessary that the three sub-areas risk management, explosion load and structural response are properly coordinated.
In today's handling of explosions, there are significant shortcomings among both risk analysts and structural engineers. A contributing reason for this is partly that communication between these two groups is inadequate and partly that the level of knowledge about explosions is often insufficient. An explosive load creates an intense load pulse of short duration that can cause a structural response that differs significantly from that normally obtained under static load. This puts special demands on the design of explosion loaded structures, for which there are currently no adequate guidelines. This is of interest for e.g. explosion in tunnels/street over build, bridge columns, or protective piers subjected to impact. It may also be applicable to buildings that may be affected by the proximity to transport routes.
The overall aim of the project is to contribute to increased national competence development in the field of explosions. One of its goals is to bridge the gap between risk analyst and structural engineer by clarifying the link between an explosion and its consequences. However, the intention is not to work with risk per se, but rather with the development of tools that can then be used in risk management. Other objectives are to develop simplified methods for determining the explosion load and to improve existing methods for determining the resistance of a structure subjected to an explosion load. The focus will be on developing simplified computational models for explosion loads and structural response, in order to approximately take into account various types of complex phenomena, and thereby make these available to a wider range of structural engineers.
- Royal Institute of Technology (KTH) (Academic, Sweden)
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Senior Lecturer, Architecture and Civil Engineering, Structural Engineering , Concrete Structures
Joosef Leppänen is Senior Lecturer at the Division of Structural Engineering, researchgroup Concrete Structures, since 2012. He teaches in courses for Master of Science and for BSc in Structural...
Adjunct Professor, Architecture and Civil Engineering, Structural Engineering
Morgan Johansson is adjunct professor at the Division of Structural Engineering within the field of Applied structural engineering. Morgan’s main interest is about impulse loaded structures, in which...
Industrial PhD student,Concrete Structures, Structural Engineering, Architecture and Civil Engineering.
Fabio Lozano is an industrial PhD student at the Division of Structural Engineering, research group Concrete Structures at Chalmers. He is employed by Norconsult as a bridge engineer. His research is...
Professor/Head of Division, Architecture and Civil Engineering, Structural Engineering, Concrete Structures
Mario is a Professor and Head of Division at the Division of Structural Engineering, he works in the research group Concrete Structures at Chalmers.
- Swedish Civil Contingencies Agency (Public, Sweden)
- Swedish Fortifications Agency (Public, Sweden)
- Swedish Transport Administration (Public, Sweden)