摘要
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。
The dynamic response of surface-flush structure under nuclear blast wave is calculated as shallow buried structure according to defending engineer specification at present.According to practical projects,the dynamic response of surface-flush defending structure in different environment is calculated using numerical method,and the influence of environment to surface-flush structure dynamic response under nuclear blast wave is analyzed.The result indicates that the shear force of soleplate increases with the decrease of the rock intensity,so as the acceleration and the displacement of the surface-flush structure.But the axial force decreases with the increase of the rock intensity.As C20 concrete,debris landslide and foamed concrete backfilled,the axial force of wall and the shearing force of soleplate all decrease,but the acceleration damping is inconspicuous.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第13期114-117,共4页
Journal of Wuhan University of Technology
关键词
设置环境
齐地表防爆结构
动力响应
回填材料
building enviriment
surface-flush defence structure
dynamic response
backfill material
