call girls in Vasundhra (Ghaziabad) 🔝 >༒8448380779 🔝 genuine Escort Service 🔝...
UG_20090206_Vantomme
1. IWT – SBO project
Fire safety in Car Parks
Kick-Off meeting
06 February 2009
Contribution of
Royal Military Academy
John VANTOMME
Fermin PASCUALENA ZABALZA
Royal Military Academy
Dept Civil and Materials Engineering
2. Koninklijke Militaire School - Ecole Royale Militaire
Royal Military Academy, Brussels, Belgium
www.rma.ac.be
Bachelor
Master
Ma after Ma
(Defence
college)
PhD
(with civil
universities)
3. RMA
Polytechnical Faculty
Civil and Materials Engineering Dept
Teaching – Scientific research – Case studies
in the fields of
- Civil and mechanical engineering
- Materials and structures
- Effects of explosions on structures
4. Blast waves in air from
condensed high explosives
DETONATION
Gas expansion
⇓
Layer compressed air
⇓
blast wave
Remark :
overexpansion
⇓
reversal of flow
10. Structural response regimes
T
td
impulsive regime td < 0,4 . T
dynamic regime 0,4 . T < td < 2 . T
quasi-static regime td > 2 . T
11. Research topics for parametric analysis of
structural members
Loads on structural elements:
- detonation or deflagration (duration of load and
change of rise time)
Structural response without /with fire
- Material laws : dynamic strengthening or fire
modified behaviour
- Composite action for global response of RC
elements :
- modification of elastic vibration response
- plastic hinge accumulation
- damage mechanisms
12. Special feature (1)
Internal explosions in car parks
- venting ⇒ pressure relief
- re – reflection of blast waves
- heat, fire
- gas pressure loading
14. Special feature (2)
Near field explosions
- local blast overpressures > 10 bar (1000
kPa)
- transmission and reflection of
shock waves in solids
(heated RC)
23. Modelling of blast behaviour of RC
and mixed steel – concrete columns
AUTODYN version 4.2.02a
Century Dynamics Incorporated
Hydrocodes :
HYDROdynamic computer CODES
27. Failure in punching shear
Importance of enhanced connections
between slabs and columns
28. Conclusion : RMA contribution to
IWT SBO Fire project
WP 1 : design for minimising fire and explosion risk:
- parametric analysis of cause – consequence
WP 2.1 : parametric analysis of structural members
- slab and column: structural behaviour
- the combination blast – fire - gas pressure
- Analytical models
- Numerical models: hydrocode (impact of material
behaviour laws)
WP 2.2 : Connections – punching shear
- Real scale tests : fire with blast