脉冲荷载作用下土中浅埋钢筋混凝土框架直剪破坏分析(I.理论)  

ANALYSIS OF DIRECT-SHEAR FAILURE OF SHALLOW-BURIED RC FRAMES SUBJECTED TO IMPULSIVE LOADING(I.THEORY)

作　　者：吴平安 方秦[2] 

机构地区：[1]总参工程兵第四设计研究院,北京100850 [2]解放军理工大学,南京210007

出　　处：《振动与冲击》2004年第1期91-93,86,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目 (5970 80 1 3)

摘　　要：本文以常规武器爆炸荷载作用下土中浅埋钢筋混凝土框架为研究对象 ,将迎爆面构件简化为梁 ,基于一维情况下土与结构相互作用和Timoshenko梁理论 ,并引入梁的弯曲和直剪破坏准则 ,通过采用有限差分方法 ,建立了常规武器爆炸荷载作用下土中浅埋梁的动力响应和破坏模式分析方法。The dynamic response and failure mode of the structural component close to the blast point of shallow-buried RC frames subuected to conventional weapons explosion are investigated in the paper.Based on the soil-structure interaction in one dimensional case and Timoshenko beam theory,a numerical approach for prediction of the dynamic responses and failure modes of structure under impulsive loadings is established by finite differential method,incorporating with the flexural and direct-shear failure criteria.

关 键 词：脉冲荷载 钢筋混凝土框架 直剪破坏 梁 有限差分法 常规武器 爆炸荷载 

分 类 号：TU375.4[建筑科学—结构工程]