Abstract
In this study, the Performance Based Design PBD method, which has been used only in seismic design by several codes, has been expanded to be applied to structures exposed to blast loads. The plastic hinge models used in PBD, which currently available for earthquake loads do not represent real behavior under the blast load. An analytical approach was proposed to represent the plastic behavior of flexural response under blast loads. The proposed model considers the following essential phenomena: concrete cover crushing, concrete core crushing, bar buckling in compression reinforcement, strain hardening in tensile reinforcement and softening in reinforcement bar. The proposed analytical approach has been validated with two experimental results of columns applied to blast loads and reasonable results has been seen
Highlights
Over the last few decades, the increasing of terrorist attacks on civilian buildings, led to growing research interests on the protection of civil facilities
There are no code or research provide plastic hinge model for nonlinear dynamic analysis of structures applied to blast loads
The seismic plastic hinge model was used in the nonlinear dynamic analysis in such cases, where the validity is questionable and need to be investigated
Summary
Over the last few decades, the increasing of terrorist attacks on civilian buildings, led to growing research interests on the protection of civil facilities. There are no code or research provide plastic hinge model for nonlinear dynamic analysis of structures applied to blast loads. 2014, Priyanka and Rajeeva, 2015, and Shinde et al, 2016 are good examples of using seismic plastic hinge in dynamic analysis of structures applied to blast loads. 2. ASCE 41-13 PLASTIC HINGE MODEL VALIDATION UNDER BLAST LOADS ASCE 41-13, 2013 assumed that the nonlinear load-deformation relation is based on experimental evidence or taken from specified tables showing deformation limits. In order to produce an accurate and comprehensive plastic hinge model for the nonlinear dynamic analysis, understanding of important phenomena in the behavior of both materials concrete and reinforcement is required.
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