摘要
通过粘钢实现一典型汽车库人防口部封堵的设计方案,并用有限元分析软件对其进行三维有限元动力数值分析,采用8节点六面体单元离散顶板、底板、封堵板、粘接钢板、加劲肋板和土体,通过顶、底板设置连杆用于模拟邻近结构对计算区域的变形产生的约束作用,竖向连杆以两端简支的杆单元模拟,混凝土顶板、底板及封堵板与钢板之间拟设置接触面单元模拟粘胶的性态,得到了关键构件在人防抗力等级荷载下的位移和应力时程曲线以及通过编制APDL对实体单元的应力进行积分得到结构内力(弯矩、剪力、轴力)最大值包络线,对粘钢封堵构件及接触面进行强度校核。由此得出结论:在对汽车库人防口部封堵设计中,采用粘钢技术可以满足人防口部的封堵设计要求,由此论证了这类技术用于平战功能转换的可能性和优越性。
Three dimensional FEM is adapted to a gateway of defense structure of a typical garage closed up by steel plates. A 3D friction contact element method is developed in this paper. The results show that in the course of design a gateway of defense structure of a typical garage closed up by steel plates, the technology of strengthening by bonding steel plates can fulfill the design ability of a gateway of defense structure of a typical garage closed up. And the software ANSYS can analyze the interracial stresses of the joint member closed up by steel plates very well. In the meantime, the former method proves to be of possibility and optimization used for functional transformation from peacetime to wartime.
出处
《四川建筑科学研究》
北大核心
2007年第2期51-54,69,共5页
Sichuan Building Science
关键词
人防口部
粘钢
界面应力
有限元分析
the gateway of defense structure
steel reinforced plates
interfacial stress
FEM analysis
