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Abstract

This dissertation delves into an extensive exploration of the efficacy and performance of Carbon fibre Reinforced Polymer (CFRP) strengthening in fortifying reinforced concrete (RC) columns against blast loads. Grounded in a meticulous methodology, the research unfolds with a comprehensive review of pertinent literature, aimed at synthesizing existing knowledge, identifying research gaps, and delineating avenues for further investigation. Subsequently, numerical models are meticulously crafted utilizing LUSAS software, while manual calculations are employed for blast load estimation, facilitating a multifaceted analysis of the structural response under dynamic loading conditions.
The comparative analyses undertaken unveil compelling insights into the transformative impact of CFRP reinforcement on the behaviour of RC columns subjected to blast loading. Specifically, discernible reductions in maximum deflection and equivalent stress are observed in CFRP-strengthened columns and their unstrengthen counterparts, underscoring the pronounced enhancement in structural robustness and resilience afforded by CFRP reinforcement strategies. Moreover, a nuanced exploration into variations in CFRP layer thickness and configuration offers valuable insights, elucidating the nuanced interplay between design parameters and structural performance. Intriguingly, findings suggest that thicker CFRP layers and configurations characterized by full wrapping exhibit superior efficacy in mitigating displacement and stress, thereby underscoring the importance of meticulous design considerations in optimizing structural response under blast loading scenarios. 
Further enriching the analysis, the computation of the damage assessment parameter (θ) provides a nuanced assessment of structural integrity, revealing minimal levels of damage in both CFRP-strengthened and unstrengthen columns, thereby attesting to the efficacy of CFRP reinforcement in enhancing structural resilience. These compelling findings serve as a catalyst for advancing our understanding of structural dynamics under extreme loading scenarios, while also informing practical interventions aimed at enhancing the blast resistance of critical infrastructure.
In light of the findings, this study advocates for a holistic approach to structural design and retrofitting, one that integrates cutting-edge materials science, advanced computational tools, and empirical insights from experimental testing. By fostering a deeper understanding of the multifaceted interactions between material properties, structural configurations, and loading conditions, this research lays the groundwork for the development of robust and resilient structural systems capable of withstanding the challenges posed by dynamic loading scenarios. Ultimately, the insights gleaned from this study hold profound implications for the broader field of structural engineering, offering a pathway towards the design and implementation of safer, more resilient built environments in an era of evolving threats and challenges.

Course: Civil Engineering - MSc - C0618

Date Deposited: 2025-01-15

URI/permalink: https://library.port.ac.uk/dissert/dis14639.html