爆炸荷载作用下钢筋混凝土板的动力响应分析  

Dynamic Response Analysis of Reinforced Concrete Slab Subjected to Blast Loading

作　　者：谭继可[1] 潘金玉[2] 杨慧[1] 桓秀剑[1] 

机构地区：[1]长江大学城市建设学院,湖北荆州434023 [2]重庆工商大学旅游与国土资源学院,重庆400067

出　　处：《长江大学学报（自科版）（上旬）》2013年第5期114-116,1,共3页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

基　　金：国家自然科学基金青年科学基金项目(41102182)

摘　　要：基于大型有限元软件ABAQUS对钢筋混凝土板在爆炸荷载作用下的动力响应进行数值模拟,同时与钢板在爆炸荷载作用下动力响应特性进行对比分析,研究结果表明,在爆炸荷载作用下,钢筋混凝土板与钢板响应特性有着明显的不同,与钢板相比,钢筋混凝土板变形恢复能力很差,达到位移最大值后仅有很小恢复,延性较钢板差,耗能能力较弱,因而钢筋混凝土板在爆炸冲击荷载下容易发生较大位移而产生脆性破坏;适当提高钢筋混凝土板板厚和配筋率,可以显著降低其位移幅值,使混凝土延性得以提高,从而加强其防爆性能;钢筋本身材料性能的变化对钢筋混凝土结构的抗爆性能影响很小。Basing on ABAQUS for large finite element analysis software,this paper deals with numerical simulation of reinforced concrete slab's dynamic response under explosion shock loading.Compared with steel slab,reinforced concrete slab's dynamic response characteristics is completely different.Reinforced concrete slab has poor deformation recovery ability,poor ductility and energy-dissipating capacity,which leads reinforced concrete slab prone to have larger displacement and brittle fracture under blast loading.Appropriately improving reinforced concrete slab's thickness and reinforcement ratio can striking reduce displacement amplitude and improve it's ductility,which contribute to strengthen its explosion proof performance,whereas,different steel material characteristics almost have no influence on the antiknock performance of the reinforced concrete structure.

关 键 词：爆炸荷载作用 钢筋混凝土板 动力响应 有限元模型 

分 类 号：TU398.9[建筑科学—结构工程]