爆炸荷载作用下配筋砌体结构的动力响应  

Dynamic response of reinforced masonry structure under blast load

作　　者：田玉滨[1] 李朝[1] 张春巍[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《爆炸与冲击》2012年第6期658-662,共5页Explosion and Shock Waves

基　　金：国家自然科学基金项目(51078116)~~

摘　　要：基于大型非线性动力有限元软件LS-DYNA,通过改变墙体的约束情况、砌体材料的强度等级、纵向配筋率、高宽比、荷载峰值、墙体距爆心点距离、墙体开洞以及粘贴玻璃纤维复合材料等,得到配筋砌体墙在爆炸荷载作用下的变形规律、破坏情况以及结构墙体中砌体材料、钢筋的应力和位移随时间的变化规律。同时对各种不同工况下配筋砌体墙的防爆性能进行比较,找出了影响结构响应最为重要的因素,给配筋砌体墙防爆设计提供参考。Based on the numerical analysis with LS-DYNA,the deformation and damage of the reinforced masonry walls were investigated by considering the following factors： wall-borne constraint,masonry material strength grade,vertical reinforcement ratio,height-to-span ratio,load peak,distance from explosive center to wall,a hole in the wall and GFRP on the wall.And the distance-time curves of the walls were obtained as well as the stress-time curves of the masonry materials and steel bars.Meanwhile,the anti-explosion performances of the reinforced masonry walls were compared in the different cases and the important factors influencing the structure response were determined.It is helpful for the anti-explosion design about the reinforced masonry structure.

关 键 词：爆炸力学 动力响应 LS-DYNA 配筋砌体墙 

分 类 号：O383.2[理学—流体力学] TU365[理学—力学]