TY - GEN
T1 - Assessment of a protective wall response to explosive loading considering a realistic fragments distribution
AU - Grisaro, Hezi Y.
AU - Dancygier, Avraham N.
N1 - Publisher Copyright:
© Springer International Publishing AG 2018.
PY - 2018
Y1 - 2018
N2 - Design of structures to extreme loads include explosive loading that generates fragments impact and overpressure (blast). These structures are commonly made of reinforced concrete and they are called ‘protective structures’, where structures that are not designed to extreme loading can still be exposed to such loads. It is therefore important to evaluate the response and capacity of these structures under explosive loads. A common source of threat is a charge with a metal casing. After the charge detonates, the casing expands and ruptures into a large number of fragments of different masses. Analysis and design of protective structures commonly assume uniform distributions of the (reflected) overpressure and the fragments. While the effect of the blast is associated mainly with the global structural response (e.g., flexure), the fragments can cause local damage (by their penetration), as well as global impact due to their mass and velocity. This work deals with these effects of the loading, but for a more realistic, non-uniform distribution of the fragments over a protective wall that they strike. The paper presents a case study of the response of a one-way reinforced concrete wall to the commonly assumed blast pressure, which is accompanied by a non-uniform fragments load. Initial results demonstrate the importance of considering this more realistic loading.
AB - Design of structures to extreme loads include explosive loading that generates fragments impact and overpressure (blast). These structures are commonly made of reinforced concrete and they are called ‘protective structures’, where structures that are not designed to extreme loading can still be exposed to such loads. It is therefore important to evaluate the response and capacity of these structures under explosive loads. A common source of threat is a charge with a metal casing. After the charge detonates, the casing expands and ruptures into a large number of fragments of different masses. Analysis and design of protective structures commonly assume uniform distributions of the (reflected) overpressure and the fragments. While the effect of the blast is associated mainly with the global structural response (e.g., flexure), the fragments can cause local damage (by their penetration), as well as global impact due to their mass and velocity. This work deals with these effects of the loading, but for a more realistic, non-uniform distribution of the fragments over a protective wall that they strike. The paper presents a case study of the response of a one-way reinforced concrete wall to the commonly assumed blast pressure, which is accompanied by a non-uniform fragments load. Initial results demonstrate the importance of considering this more realistic loading.
KW - Blast
KW - Protective structures
KW - Realistic fragmentation distribution
UR - http://www.scopus.com/inward/record.url?scp=85134826150&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-59471-2_169
DO - 10.1007/978-3-319-59471-2_169
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AN - SCOPUS:85025588705
SN - 9783319594705
T3 - fib Symposium
SP - 1470
EP - 1477
BT - High Tech Concrete
A2 - Hordijk, D.A.
A2 - Lukovic, M.
T2 - International fib Symposium on High Tech Concrete: Where Technology and Engineering Meet, 2017
Y2 - 12 June 2017 through 14 June 2017
ER -