钢筋直径和分布对钢筋混凝土靶抗侵彻性能的影响
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摘要
钢筋直径和分布是影响钢筋混凝土抗侵彻性能的重要因素,为研究其对钢筋混凝土靶抗侵彻性能的影响,采用分离式建模方法建立了不同钢筋直径和分布的钢筋混凝土靶弹模型,运用显式AUTODYN动力学软件进行弹丸侵彻钢筋混凝土过程仿真计算,分析靶后剩余速度和剩余动能。结果表明,钢筋直径越大,钢筋混凝土靶的抗侵彻能力越强,弹丸直径小于钢筋间距时影响较小,弹丸直径大于钢筋间距时影响较大;钢筋排列越密,钢筋混凝土靶的抗侵彻能力越强。
Diameter and distribution of reinforcement are important factors affecting the anti-penetration performance of reinforced concrete.In order to study their influence on the anti-penetration performance of reinforced concrete targets,the model of reinforced concrete target projectiles with different diameters and distributions of reinforcement bars is established by using the separated modeling method.The process of projectile penetrating reinforced concrete is simulated by using explicit AUTODYN dynamic software,and the residual velocity after target is analyzed.Degree and residual kinetic energy.The results show that the bigger the diameter of steel bar is,the stronger the anti-penetration ability of reinforced concrete target is,the smaller the impact is when the diameter of projectile is smaller than the spacing of steel bar,and the larger the impact is when the diameter of projectile is larger than the spacing of steel bar.The more dense the arrangement of steel bar,the stronger the anti-penetration ability of reinforced concrete target is.
Diameter and distribution of reinforcement are important factors affecting the anti-penetration performance of reinforced concrete.In order to study their influence on the anti-penetration performance of reinforced concrete targets,the model of reinforced concrete target projectiles with different diameters and distributions of reinforcement bars is established by using the separated modeling method.The process of projectile penetrating reinforced concrete is simulated by using explicit AUTODYN dynamic software,and the residual velocity after target is analyzed.Degree and residual kinetic energy.The results show that the bigger the diameter of steel bar is,the stronger the anti-penetration ability of reinforced concrete target is,the smaller the impact is when the diameter of projectile is smaller than the spacing of steel bar,and the larger the impact is when the diameter of projectile is larger than the spacing of steel bar.The more dense the arrangement of steel bar,the stronger the anti-penetration ability of reinforced concrete target is.
引文
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[3] 穆朝民,任辉启.弹丸对钢筋混凝土中钢筋交汇处侵彻效应研究[J].高压物理学报,2010,24(5):351-358.
[4] 咸玉席.弹丸撞击下钢筋混凝土结构的安全计算与评估[D].合肥:中国科学技术大学,2014.
[5] 刘涛.钢筋混凝土柱的配筋新模式[D].大连:大连理工大学,2001.
[6] 周宁,沈兆武,马宏昊.配筋结构对弹丸侵彻过程影响的研究[J].实验力学,2009,24(1):54-60.