原子能科学技术2024，Vol.58Issue(z2)：75-86,12.DOI:10.7538/yzk.2024.youxian.0172
预应力钢筋混凝土结构抗侵彻性能试验及数值模拟研究
Experimental and Numerical Simulation Research on Penetration Resistance of Prestressed Reinforced Concrete Structure
摘要
Abstract
Prestressed reinforced concrete structures are still the commonly used structural form for containment buildings in large pressurized water reactor nuclear power plants.In addition to meeting basic functional requirements,the structures of nuclear power plants may also face various impact events,such as impacts from tornado-borne projectiles,accidental crashes of small airplanes,and the impacts of commercial airliner collisions.Conducting research on the penetration resistance of prestressed reinforced concrete structures can provide important references for assessing and analyzing the structural state in relevant accident scenarios.At present,the basic experimental research on the penetration resistance of prestressed reinforced concrete structures is lacking,and the research on the enhancement effect of the existence of prestressing on the structural penetration resistance is insufficient.Therefore,the experimental research on the penetration resistance of prestressed reinforced concrete structures was conducted and a numerical simulation method through experimental calibration was established.On this basis,the enhancement effect of prestressing on the penetration resistance of the structure was further explored.The experimental results indicate that prestressing has a minimal impact on the depth of the cratering on the front face of the concrete target,but the application of initial prestressing increases the extent of the cratering on the front face.Further numerical simulations were conducted to reproduce the entire experimental process.The numerical simulation results are very consistent with the experimental results,validating the effectiveness of the constitutive model,parameter selection,and finite element analysis method used.Finally,based on the numerical simulation method,the anti-penetration ability of prestressed reinforced concrete target plate under different penetration speeds was calculated and analyzed.The overall analysis results indicate that prestressing has a minor effect on the penetration resistance of the target plate.The increased confining pressure due to prestressing increases the resistance encountered by the projectile passing through the target plate,resulting in a reduced residual velocity of the projectile compared to that when it penetrates a normal target plate.关键词
预应力/抗侵彻能力/冲击试验/数值模拟Key words
prestressing/penetration resistance/impact test/numerical simulation分类
能源科技引用本文复制引用
刘蒙莎,高戈,蒋迪..预应力钢筋混凝土结构抗侵彻性能试验及数值模拟研究[J].原子能科学技术,2024,58(z2):75-86,12.基金项目
中核集团"青年英才"项目 （）
