爆炸荷载作用下地下复合结构动力分析  

Dynamic Analysis of Underground Composite Structures Under Explosion Loading

作　　者：赵晓兵 薛大为[2] 赵玉祥[3] 

机构地区：[1]解放军二炮指挥学院,武汉430012 [2]澳门大学 [3]洛阳水利工程技术研究所,河南洛阳471023

出　　处：《应用数学和力学》2004年第3期247-252,共6页Applied Mathematics and Mechanics

摘　　要：　在地下抗爆结构的合理选型中,为了改善结构截面的受力状态,使截面各部位的材料强度得到充分的发挥,提出了复合结构的研究方法;采用微段隔离体分析的方法,给出了复合结构的平衡方程、约束方程和变形协调方程,利用广义功的概念直接引入物理意义明确的Lagrange乘子。In selecting rational types of underground structures resisting explosion, in order to improve stress states of the structural section and make full use of material strength of each part of the section, the research method of composite structures is presented. Adopting the analysis method of micro-section free body, equilibrium equations, constraint equations and deformation coordination equations are given. Making use of the concept of generalized work and directly introducing Lagrange multiplier specific in physical meaning, the validity of the constructed generalized functional is proved by using variation method. The rational rigidity matching relationship of composite structure section is presented through example calculations.

关 键 词：复合结构 动力分析 合理刚度匹配 广义变分原理 

分 类 号：TU311.3[建筑科学—结构工程]