Dynamic Resilience of Precast Intersections: A Computational Framework Using SFRC and Headed Anchors

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DOI: https://doi.org/10.63345/ijrmeet.org.v12.i10.8

Sonal Vijay Bhosale

Research Scholar, Vikrant University, Gwalior

Dr. Kamal Sharma

Professor, Vikrant University, Gwalior

Abstract

The increasing occurrence of extreme dynamic loading events, such as industrial accidents and blast impacts, exposes critical vulnerabilities in modern infrastructure. While precast reinforced concrete (RC) provides significant construction efficiency, its segmented nature creates weak con-nection points. These discrete joints make precast structures highly susceptible to progressive collapse under sudden explosive loads. This paper systematically reviews recent advancements in blast mitigation, focusing specifically on the combined application of Steel Fibre Reinforced Concrete (SFRC) and headed reinforcement bars. By analyzing chronological data on blast wave dynamics, material ductility enhancements, and mechanical anchorage behavior, a distinct gap is identified in the current literature regarding how these technologies interact within precast wall-column connections under high strain rates. To resolve this, the study proposes a structured computational framework utilizing explicit Finite Element Analysis (FEA). This framework is de-signed to quantify the dynamic pull-out resistance and energy absorption of plain, grooved, and ribbed headed anchors embedded in an SFRC matrix. The expected outcomes will provide en-gineers with data-driven design pathways for creating safer, highly ductile precast connections suitable for extreme hazard environments.

Keywords– Blast Dynamics, Precast Joints, Steel Fibre Reinforced Concrete (SFRC), Headed Rein-forcement, Finite Element Analysis (FEA), Progressive Collapse, Dynamic Increase Factor (DIF).

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