空爆作用下复合材料加固圆拱动力响应数值模拟  

Numerical Simulations on Dynamic Responses of Circular Concrete Arch Strengthened with Composite Materials Under Air Blast Loading

作　　者：谢威[1] 蒋美蓉[1] 周建南[1] 金丰年[1] 薛鑫 

机构地区：[1]解放军理工大学国防工程学院,南京210007 [2]空军第一工程总队,北京100076

出　　处：《武汉理工大学学报》2014年第1期135-139,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51308544)

摘　　要：采用分离式钢筋混凝土模型建模,利用LS-DYNA有限元计算软件,对空爆条件下复合材料加固圆拱的动力响应进行了数值分析。结果表明,内贴复合材料加固后,结构的抗爆性能得到增强;加固层数对拱结构抗爆性能影响不显著;CFRP的整体加固效果优于GFRP。Using the discrete model of concrete arch,LS-DYNA software was adopted to numerically analyze the circu- lar concrete arch strengthened with composite materials under air blast loading. Calculation results demonstrate that strengthened arches have higher blast resistance, however the blasting resistance of the FRP strengthened concrete arch increases slowly with the increasing of thickness, generally arch reinforce with CFRP sheets perform better than that retrofitted with GFRP sheets.

关 键 词：爆炸荷载 动力响应 复合材料 拱结构 

分 类 号：TU375.5[建筑科学—结构工程]