Facade failure effects on blast propagation along city streets

Summary

The influence of facade behaviour on the propagation of blast waves in an urban street was studied using 1/50 scale building models and computer simulations. Buildings in which the facade represented 0-77 % of the frontal area was studied. The street width was 15 m and the explosive charge was 1650 kg TNT equivalent. Blast pressures were measured at various locations within the models. It is proposed that facades adjacent to explosions will fail, and that the blast will then enter the building, so causing further damage and injury, but reduce the impulse experienced by buildings further down the street. It was concluded that all buildings which are potential terrorist targets should have facades which are as robust as possible to maintain integrity, so that only those buildings immediately adjacent to the explosion are likely to suffer facade failure and the associated consequences. 11 refs.

Primary author(s): Smith P D;Rose T A;Krahe S L;Franks M A

Source: Proc.Inst.Civ.Eng.Struct.Build.

             Vol.156, No.4, 2003, p.359-365

 

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