摘要
爆炸荷载作用下地下结构动力响应一直是一个研究的热点问题,但是对于爆炸荷载作用下地下拱形结构破坏模式研究比较少,由于地下工程设计和爆炸荷载作用的双重特殊性,实验研究实现的难度较大,文中利用ANSYS/LS-DYNA数值模拟通用程序,采用流固耦合算法对不同跨度的地下拱形结构进行了不同装药量和起爆位置的数值模拟,对地下结构与围岩的动力相互作用机理进行了研究,得到了不同装药、不同起爆位置时各种跨度地下拱形结构的破坏模式。
The dynamic response of structure subjected to blast load is always a hot issue,but the study of underground arch structure＇s failure modes scarcely can be seen.The underground structure is a special structure without mature design theory,and the blast load is also a special load.So it is difficult to study the thing through experiment.In this paper,the nonlinear dynamic finite element procedure of ANSYS/LS-DYNA was used and the fluid-solid coupling algorithm was selected to study the dynamic action mechanism each other between arch structure and rock underground subjected to blast load.Also,the failure modes of arch structure underground in difference circumstances were analyzed.
出处
《弹箭与制导学报》
CSCD
北大核心
2011年第5期89-92,98,共5页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
陕西省自然科学基金资助
关键词
爆炸荷载
地下结构
动力相互作用
破坏模式
blast load
underground structure
dynamic interaction
failure mode
