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针对目前国内外防核武器结构设计规范将齐地表防爆结构按照浅埋结构计算,即实际上假定齐地表结构动力响应与介质无关的现状,结合工程实际,采用数值计算方法,计算了核爆冲击波作用下齐地表防爆结构在不同类别围岩和不同回填材料时的动力响应,分析了设置环境对齐地表防爆结构动力响应的影响。计算结果表明随着围岩强度的降低,齐地表结构筒体轴力随之减小,底板剪力、结构震动加速度和位移随之增大。C20混凝土、碎石土和泡沫混凝土回填层均使得筒体轴力和底板剪力减小,但减震作用不明显。
In view of the current national and international anti-nuclear weapons design norms will Qi surface explosion-proof structure in accordance with the shallow structure of the calculation, that is actually assumed homogeneous surface structure of the dynamic response has nothing to do with the status of the media, combined with engineering practice, using numerical methods to calculate the role of nuclear shock wave The dynamic response of the underground surface explosion-proof structure in different types of surrounding rock and different backfill materials is analyzed, and the influence of setting the environment on the dynamic response of the surface explosion-proof structure is analyzed. The calculation results show that with the decrease of the surrounding rock strength, the axial force of the surface structure cylinder decreases with the increase of the shear force, the vibration acceleration and the displacement of the floor. C20 concrete, crushed stone soil and foam concrete backfill layer make the cylinder axial force and the floor shear decreases, but the damping effect is not obvious.