蔡路军,刘令,陈少杰,吴立过,许凯

• 1:武汉科技大学理学院
• 2:湖北省智能爆破工程技术研究中心
• 3:武汉科技大学城市建设学院

摘要(Abstract)：

基于纤维随机分布特征,对钢纤维交叉判重做出改进,设计出一种不交叉重叠的随机投放方法,借助MATLAB和ANSYS/LS-DYNA联合建立包含钢纤维、钢筋和混凝土的三维细观数值模型,通过纤维体积含量为0.6%、1.2%和1.8%SFRC板接触爆炸实验验证了细观有限元模型的正确性和有效性,从实验和数值模拟两方面对钢纤维高强混凝土板抗爆进行了研究。进一步分析长径比和板厚变化对结构抗爆性能的影响,结果表明:所建立的钢纤维高强混凝土细观数值模型较好地反映结构在承受爆炸超动态荷载作用时的损伤破坏行为,随着纤维体积含量的增加,SFRC板局部抗震塌效应显著增强,且纤维体积含量和爆炸形式相同条件下,结构整体抗爆性能随着长径比和板厚度的增加而增大,损伤程度逐渐减小,各工况迎爆面漏斗坑体积变化微小,但背部剥落坑体积减小较明显,研究表明纤维体积含量为1.8%、长径比为60、板厚为11 cm时,结构抗爆性能较优。

关键词(KeyWords)： 钢纤维高强混凝土板;细观数值模型;接触爆炸;纤维体积含量;长径比

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51574184);; 湖北省教育厅科学研究计划重点项目(D20151105)

作者(Author): 蔡路军,刘令,陈少杰,吴立过,许凯

参考文献(References)：

• [1] LUCCIONI B,ISLA F,CODINA R,et al.Effect of steel fibers on static and blast response of high strength concrete[J].International Journal of Impact Engineering,2017:S0734743X16300562.
• [2] ZHANG Y,ZHAO,LI Y,et al.Study on the local damage of SFRC with different fraction under contact blast loading[J].Computers & Concrete,2018,22(1):63-70.
• [3] FOGLAR M,HAJEK R,FLADR J,et al.Full-scale experimental testing of the blast resistance of HPFRC and UHPFRC bridge decks[J].Construction & Building Materials,2017,145:588-601.
• [4] LI J,WU C,HAO H,et al.Experimental and numerical study on steel wire mesh reinforced concrete slab under contact explosion[J].Materials & Design,2017,116:77-91.
• [5] 龙源,纪冲,万文乾,等.SFRC及混凝土遮弹板抗接触爆炸性能的数值分析[J].弹道学报,2006,18(2):64- 68.LONG Yuan,JI Chong,WAN Wen-qian,et al.Numerical analysis of anti-explosion ability of SFRC and concrete slabs[J].Journal of Ballistics,2006,18(2):64- 68.(in Chinese)
• [6] 李楠,赵均海,吴赛,等.钢纤维高强混凝土墙基于CONWEP的爆炸响应[J].西安建筑科技大学学报(自然科学版),2014,46(6):833-838,855.LI Nan,ZHAO Jun-hai,WU Sai,et al.Blast response of steel fiber reinforced high strength concrete walls based on CONWEP[J].Journal of Xi′an University of Architecture & Technology(Natural Science Edition),2014,46(6):833-838,855.(in Chinese)
• [7] 姜天华,王威,杨云锋,等.钢纤维混凝土箱梁在爆炸荷载作用下的动态响应[J].混凝土与水泥制品,2019(9):50-53.JIANG Tian-hua,WANG Wei,YANG Yun-feng,et al.Dynamic response of steel fiber reinforced concrete box girder under explosion load[J].China Concrete and Cement Products,2019(9):50-53.(in Chinese)
• [8] 薛兵.基于细观尺度的钢纤维混凝土损伤破坏数值模拟研究[D].北京:中国矿业大学,2017.XUE Bing.Numerical simulation of damage and failure of steel fiber reinforced concrete based on meso-scale[D].Beijing:China University of Mining and Technology 2017.(in Chinese)
• [9] 张凤国.动载荷作用下混凝土靶板损伤破坏的数值分析[J].兵工学报,2009,30(9):1177-1180.ZHANG Feng-guo.Numerical analysis of damage and failure of concrete target plate under dynamic load[J].Acta Armamentarii,2009,30(9):1177-1180.(in Chinese)
• [10] 张文华,张云升,陈振宇.超高性能混凝土抗缩比钻地弹侵彻试验及数值仿真[J].工程力学,2018,35(7):167-175,186.ZHANG Wen-Hua,ZHANG Yun-shen,CHEN Zhen-yu.Determinations of HJC constitutive model parameters for normal strength concrete[J].Engineering Mechanics,2018(7):167-175,186.(in Chinese)
• [11] 任根茂,吴昊,方秦,等.普通混凝土HJC本构模型参数确定[J].振动与冲击,2016,35(18):9-16.REN Gen-mao,WU Hao,FANG Qin.Determinations of HJC constitutive model parameters for normal strength concrete[J].Journal of Vibration and Shock,2016,35(18):9-16.(in Chinese)
• [12] 林琛,徐建军,杨晋伟.基于HJC模型的钢筋混凝土侵彻仿真失效准则与参数[J].探测与控制学报,2017,39(2):100-105.LIN Chen,XU Jian-jun,YANG Jin-wei.et al.The failure criterions and parameters of HJC model based perforation simulation[J].Journal of Detection & Control,2017,39(2):100-105.(in Chinese)
• [13] GAO S,WANG Y B,LI X F.Numerical analysis of deformation and failure of penetration into concrete target by projectile[J].Advanced Materials Research,2013,804:292-297.(in Chinese)
• [14] 中国工程建设协会标准.JGT 472—2015 钢纤维混凝土标准规范[S].China Engineering Construction Association Standard.JGT 472—2015 Standard Specification of Steel Fiber Reinforced Concrete[S].(in Chinese)
• [15] 梁少阳,金宝宏,姚宇峰,等.钢纤维长径比对C60混凝土抗裂性能的影响[J].广西大学学报(自然科学版),2018,43(2):641-647.LIANG Shao-yang,JIN Bao-hong,YAO Yu-feng.et al.Effect of steel fiber′s length-diameter ratio on anti-cracking property of C60 concrete[J].Journal of Guangxi University(Natural Science Edition),2018,43(2):641-647.(in Chinese)
• [16] 李传习,石家宽,聂洁,等.平直型钢纤维掺量与长径比对超高性能混凝土性能的影响[J].硅酸盐通报,2019,38(9):2947-2954.LI Chuan-xi,SHI Jia-kuan,NIE Jie,et al.Effect of straight steel fiber volume content and length-diameter ratio on properties of ultra-high performance concrete[J].Bulletin of the Chinese Ceramic Society,2019,38(9):2947-2954.(in Chinese)