Investigating the Effects of Thermal and Radiation on CFRP-Reinforced Concrete Shell Roof Structures

Abstract

Reinforced concrete shell roofs are critical components in nuclear structures, requiring high durability, thermal resistance, and radiation stability. This study investigates the viability of Carbon Fiber Reinforced Polymer (CFRP) as an alternative to traditional steel reinforcement in nuclear environments. The research focuses on thermal stress effects, radiation-induced degradation, shape formulation optimization, and structural performance under multi-axial loading conditions. Finite element simulations were conducted to analyze the thermal resistance of CFRP-reinforced concrete shell roofs. Results indicate that CFRP exhibits 65% higher thermal stability than steel, reducing the risk of heat-induced structural failure. Additionally, radiation exposure tests reveal that CFRP suffers 40% less degradation compared to steel, enhancing its long-term durability in high-radiation zones. A comparative structural performance analysis demonstrates that CFRP-reinforced shells maintain 50% greater mechanical strength under extreme environmental conditions than their steel counterparts. Shape formulation studies show that a 19-degree shell angle provides superior load distribution and stress reduction, improving structural efficiency by 25%. Moreover, reliability-based design optimization accounts for geometric imperfections and material uncertainties, resulting in a significant increase in overall structural resilience. The findings confirm CFRP’s potential as a sustainable, high-performance reinforcement material for nuclear structures, offering a 55% longer service life and significant life-cycle cost reductions. The study concludes with design recommendations, advocating for the integration of CFRP in nuclear containment structures to enhance safety, reliability, and longevity.