AFRP加固钢筋混凝土梁抗爆性能数值模拟研究  

NUMERICAL SIMULATION OF BLAST-RESISTANCE OF AFRP-STRENGTHENED REINFORCED CONCRETE BEAMS

作　　者：孔祥清[1] 戚雪剑 刚建明 章文姣[1] 刘华新[1] KONG Xiang-qing;QI Xue-jian;GANG Jian-ming;ZHANG Wen-jiao(School of Civil Engineering, Liaoning University of Technology, Jinzhou 121001, China;Jinzhou Petrochemical Engineering Construction Supervision Company, Jinzhou 121001, China)

机构地区：[1]辽宁工业大学土木建筑工程学院,锦州121001 [2]锦州石化工程建设监理有限公司,锦州121001

出　　处：《玻璃钢／复合材料》2018年第6期54-61,共8页Fiber Reinforced Plastics/Composites

基　　金：国家自然科学基金(11302093;11302094);辽宁省自然科学基金(SY2016001)

摘　　要：借助非线性有限元软件ANSYS/LS-DYNA,建立了爆炸荷载下钢筋混凝土(RC)梁以及芳纶纤维增强复合材料(AFRP)加固后RC梁的三维有限元模型,对比分析了RC梁AFRP加固前后的破坏形态及跨中位移峰值。数值模拟结果表明,AFRP布不仅可以改变RC梁在爆炸荷载下的破坏形态,还可以明显改善梁的变形程度,加固后相较于未加固梁跨中位移峰值约减小50.7%。在此基础上,还分析了AFRP加固方式、加固尺寸、加固层数以及FRP材料类型等因素对FRP加固后RC梁抗爆性能的影响。Three-dimensional finite element models of reinforced concrete（RC） beams non-strengthened and strengthened with aramid fiber reinforced composite（AFRP） under blast loading were established using nonlinear finite element ANSYS/LS-DYNA software in this paper. The damage distributions and maximum mid-span displacements of non-strengthened and AFRP strengthened RC beams were compared. The numerical results indicates that AFRP can not only change the damage model of the RC beam,but also significantly reduce the deformation of the RC beams. And the maximum mid-span displacement of AFRP-strengthened beam is reduced by about 50. 7%. In addition,the effects of the strengthened modes,the strengthened sizes,the AFRP layers and the FRP types of the blast-resistance of reinforced concrete beams were analyzed.

关 键 词：AFRP 钢筋混凝土梁 数值模拟 爆炸荷载 抗爆性能 

分 类 号：TB332[一般工业技术—材料科学与工程]