CAJ | 학술논문

为了研究钢筋混凝土中钢筋对侵彻弹丸的阻力作用，通过对试验取出的钢筋混凝土试块的宏观和微观分析，在球形空腔膨胀模型的基础上，考虑弹丸直接与钢筋发生碰撞时钢筋对弹丸的阻力，建立了弹丸侵彻钢筋混凝土的工程解析模型。分析弹丸在钢筋交汇节点、钢筋网格中心点、单根钢筋的中点以及其他任意位置点与钢筋接触情况下钢筋对侵彻的影响。研究表明，钢筋混凝土中的钢筋不仅对混凝土的强度有影响，在弹丸撞击到钢筋时还对弹丸的侵彻能力有减小的作用。在网眼尺寸一定的条件下，随着体积配筋率的增大，钢筋对弹丸的阻力作用越明显，但在相同体积配筋率下，钢筋直径的影响小于钢筋网层间距的影响。
위료연구강근혼응토중강근대침철탄환적조력작용，통과대시험취출적강근혼응토시괴적굉관화미관분석，재구형공강팽창모형적기출상，고필탄환직접여강근발생팽당시강근대탄환적조력，건립료탄환침철강근혼응토적공정해석모형。분석탄환재강근교회절점、강근망격중심점、단근강근적중점이급기타임의위치점여강근접촉정황하강근대침철적영향。연구표명，강근혼응토중적강근불부대혼응토적강도유영향，재탄환당격도강근시환대탄환적침철능력유감소적작용。재망안척촌일정적조건하，수착체적배근솔적증대，강근대탄환적조력작용월명현，단재상동체적배근솔하，강근직경적영향소우강근망층간거적영향。
To study the resistance of steel in reinforced concrete while the proj ectile penetrating the target,the macroscopic and microscopic analysis of reinforced concrete block taken from the test was carried out.Based on the spherical cavity expansion model,the resistance of the proj ectile due to direct impact with reinforced was considered,and the proj ectile penetrating reinforced concrete engineering analytical model was established.The effect of steel bar on proj ectile was analyzed when the contact position located at the intersection node,the grid center point,the midpoint of a single reinforced and any other location points.The study shows that the steel bar in reinforced concrete not only affects the resistance of concrete but also deduces the penetration capability of proj ectile impacting steel bar.Under specific mesh size conditions,the resistance effect of reinforced on proj ectile becomes more obvious with the increase of rein forcement ratio,and the influence of bar diameter is less than that of the interlayer spacing of the steel mesh when rein-forcement ratio is invariant.