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Page 29
JET 2018
ISSN: 2319-9873
I n t e r n a t i o n a l C o n f e r e n c e o n
Structural and Civil Engineering
Research
O c t o b e r 0 1 - 0 2 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
Civil Engineering 2018
Buckling restrained braced frames (BRBF) are being used all around the
world to resist lateral loads on structures. They are used due to their high
ductility after yielding and the ability to absorb energy. Due to emerging use of
BRBFs as a major seismic or lateral force-resisting system, it has generated
lots of interests among researchers to investigate its behaviour under different
loading conditions like blast loading. The threat of blast can be catastrophic as
the effects can lead to loss of life and failure of the building. In this research,
investigations were carried out on how buildings which were originally
designed with BRBFs as primary lateral force resisting system, behaves under
the impact of blast loading. Particular focus was set on how the behaviour of
the frame was influenced by the brace thickness, compressive strength of the
concrete fill of the BRBs under blast loading. Investigations were also carried
out to understand the interaction between the brace plates, surrounding
concrete and the steel casing. Different brace orientations such as single bay
Chevron and V-Brace were examined in this study. The study also investigated
how the collapse starts in the BRBF’s and which are the critical elements that
are vulnerable inside the BRB braces under blast loading
Biography
Rais Ahmad is an Associate Professor in the Civil Engineering
and Construction Management Department at California
State University, Northridge (CSUN). He has received his PhD
in “Guided Wave Techniques to Detect Defects in Underground
Pipes” from the University of Arizona. His research interests
include Advanced Material Behaviour, Wave Propagation
and Non-destructive Testing (NDT), Earthquake Engineering,
Steel and Concrete Design. His research interests are in the
fields of Acoustic Modelling, Wave Propagation and Blast
Loading Analysis. He has authored more than 40 papers in
various journals, conference proceedings etc. He is a Licenced
Professional Engineer (PE) in the states of California and North
Carolina, USA. He is the ASCE-CSUN Faculty Advisor.
Effects of blast loading on buckling restrained braces
Rais Ahmad, Frank Chavarin and Oshman Charco
California State University Northridge, USA
Rais Ahmad et al., JET 2018 Volume: 7