碳纤维增强复合材料约束钢管混凝土圆柱抗爆性能的数值模拟分析  

NUMERICAL SIMULATION ANALYSIS ON THE ANTIKNOCK PERFORMANCE OF CONCRETE FILLED STEEL CYLINDRICAL COLUMNS CONFINED BY CFRP

作　　者：刘兰 李兴 吴越[2] 程志[1] 高营 LIU Lan;LI Xing;WU Yue;CHENG Zhi;GAO Ying(Department of Civil Engineenng,North University of China,Taiyuan 030051,China;College of Electrical and Mechanical Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学土木工程系,太原030051 [2]中北大学机电工程学院,太原030051

出　　处：《钢结构》2018年第12期119-124,143,共7页Steel Construction

基　　金：山西省应用基础研究项目(201601D202048);山西省重点研发计划(指南)项目(201703D321009-2);山西省重点研发计划资助项目(201703D121029-1)

摘　　要：为了研究碳纤维增强复合材料(CFRP)约束钢管混凝土圆柱的抗爆性能,利用有限元软件ANSYS/LS-DYNA对11根圆柱试件在爆炸荷载下的动力响应进行了数值模拟分析,主要考虑了CFRP粘贴层数、钢管壁厚、炸药量和长细比等影响因素。分析结果表明:与钢管混凝土圆柱相比,CFRP约束钢管混凝土圆柱的跨中最大位移明显减小,抗侧刚度和抗爆能力得到明显提高;在一定参数范围内,CFRP约束钢管混凝土圆柱试件的抗侧刚度和抗爆能力随着CFRP粘贴层数或钢管壁厚的增加而提高;炸药量或长细比越大,试件的跨中侧向位移越大,破坏越严重。In order to study the antiknock performance of concrete filled steel(CFST)cylindrical column confined by CFRP,the dynamic responses of 11 cylindrical specimens under the blast loading were numerically simulated by using finite element software ANSYS/LS-DYNA.The influence factors mainly include the number of CFRP layers,the thickness of steel pipe, the amount of explosive and the slenderness ratio.The analysis results showed that compared with the CFST column,the maximum mid-span displacement of CFST columns confined by CFRP were significantly reduced,while the lateral stiffness and the antiknock performance were significantly improved.Within a certain range of parameters,the lateral stiffness and the antiknock performance of CFST columns confined by CFRP were proportional to the number of CFRP layers or the thickness of steel pipe. The amount of explosive or the slenderness ratio was proportional to the mid-span lateral displacement and the destruction of the specimen.

关 键 词：碳纤维增强复合材料 钢管混凝土圆柱 抗爆性能 爆炸荷载 动力响应 

分 类 号：TU398.9[建筑科学—结构工程]