Numerical simulation for anti-blast dynamic response of fire-damaged RPC- filled steel tube columns
ZOU Huihui1,CHEN Wanxiang2, GUO Zhikun1, ZHOU Zhixin1
1.State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, China
2.School of Civil Engineering, Sun Yat-Sen University, Guangzhou 510275, China;
Abstract：Engineering structure protection problems under dynamic multi-disaster become a hot topic of current research.Here, the full process of anti-blast dynamic response of a fire (ISO834)-damaged reactive powder concrete (RPC)-filled steel tubular column subjected to blast loading was simulated with the software LS-DYNA.Firstly, the FE software ANSYS was used to simulate RPC-filled steel tube’s temperature field distribution under high temperature.Then residual strengths of steel tube and core concrete were obtained, respectively.The elastic-plastic model and K&C one were used to describe constitutive relations of the steel tube and core concrete, respectively.Combining with test study, the parameterized analysis method was used to investigate effect laws of load parameters including fire time, proportional distance, and axial load, geometric feature parameters including steel ratio, ratio of length to diameter and material strength on anti-blast performance of fire-damaged RPC-filled steel tube column.The results showed that the numerical simulation results agree well with the test ones, so the proposed simulation method can reasonably describe anti-blast dynamic behavior of fire-damaged RPC-filled steel tube column; core RPC can be constrained effectively by fire-damaged steel tube column under blast load, failure modes of RPC-filled steel tube column are mainly bending type to reveal good blast-resistance performance; high temperature causes steel concrete’s strength cracking, stiffness dropping, and component deformation significantly increasing; decrease in proportional distance can cause more obvious deformation at the middle of steel tube column, and there is a shear failure trend at its supports.
[1] 谢建. 力和高温共同作用下钢管混凝土短柱力学性能分析 [D]. 清华大学硕士论文，2008.
Xie Jian. Analysis on concrete filled steel tubular stub column under combined heating and loading [D]. Beijing: Stinghua University, 2008.(in Chinese)
[2] Yousuf M, Uy B, Tao Z, Remennikov A, Liew JYR. Transverse impact resistance of hollow and concrete filled stainless steel columns [J]. J Constr Steel Res, 2013, 82:177-189.
[3] Richard P, Cheyrezy M. Composition of reactive powder concrete [J]. Cement and Concrete Research, 1995, 25(7): 1501-1511.
[4] 郑文忠,吕雪源. 活性粉末混凝土研究进展[J]. 建筑结构学报, 2015, 36(10): 44-58.
Zheng Wenzhong, LvXueyuan. Literature review of reactive powder concrete [J]. Journal of Building Structures, 2015, 36(10): 44-58. (in Chinese)
[5] 中华人民共和国国家标准GBT 31387-2015 . 活性粉末混凝土[S]. 北京：中国标准出版社，2015.
[6] 蔡绍怀. 现代钢管混凝土结构（修订版）[M]. 北京,中国交通出版社, 2007.
CaiShaohuai. Modern steel tube confined concrete structures[M]. Beijing: China Communications Press, 2007.
[7] 李业学，谢和平，彭琪，等. 活性粉末混凝土力学性能及基本构件设计理论研究进展[J]. 力学进展, 2011, 41(1): 51-59.
Li Yexue, XieHeping, Peng Qi, Zhu Jianbo. Progress in mechanic property and design theory of elementary structure of reactive powder concrete [J]. Advances in Mechanics, 2011, 41(1): 51-59.
[8] 林震宇，吴炎海，沈祖炎. 圆钢管活性粉末混凝土轴压力学性能研究 [J]. 建筑结构学报，2005，26（4）：52-56.
Lin Zhenyu, Wu Yanhai, ShenZuyan. Research on behavior of RPC filled circular steel tube column subjected to axial compression [J]. Journal of Building Structures, 2005, 27(6): 21-27. (in Chinese)
[9] 闫志刚，张武奇，安明喆. 圆钢管RPC短柱轴心受压极限承载力分析[J]. 北京工业大学学报, 2011, 37(3): 361-367.
Yan Zhigang, Zhang Wuqi, AnMingzhe. Analysis of ultimate loading capacity for circular RPC-filled steel tube stub columns under axial compression[J]. Journal of Bejing University of Technology, 2011, 37(3): 361-367. (in Chinese)
[10] 曾建仙. 钢管 RPC 偏压长柱的受力性能研究 [D]. 福州：福州大学，2005.
ZengJianxian. Researches on behavior of eccentrically loaded slender column of circular steel tube RPC [D]. Fuzhou: Fuzhou University, 2005.(in Chinese)
[11] 冯红波，赵均海，魏雪英，等. 爆炸荷载作用下钢管混凝土柱的有限元分析[J]. 解放军理工大学学报(自然科学版), 2007, 8(6): 680-684.
Feng Hongbo, Zhao Junhai, Wei Xueying, et al. Finite element analysis for CFST columns under blast load [J]. Journal of PLA Universit y of Science and Technology. 2007, 8(6): 680-684. (in Chinese)
[12] 崔莹,赵均海,张常光, 等. 复式空心钢管混凝土柱抗爆性能及损伤研究[J]. 振动与冲击, 2015, 34(21): 188-193, 216.
Cui Ying, Zhao Junhai, Zhang Changguang, et al. Explosion-resistance behavior and damage assessment of a duplex hollow CFST column subjected to blast loading[J]. Journal of Vibration and Shock, 2015, 34(21): 188-193, 216. (in Chinese)
[13] 李国强，瞿海雁，杨涛春，陆勇，陈素文. 钢管混凝土柱抗爆性能试验研究[J]. 建筑结构学报，2013，34（12）：69-76.
Li Guoqiang, Qu Haiyan, Yang Taochun, Lu Yong, Chen Xuwen. Experimental study of concrete-filled steel tubular columns under blast loading [J]. Journal of Building Structures, 2013, 34(12): 69-76. (in Chinese)
[14] 王宏伟，吴成清，杨立燥，周云.足尺钢管混凝土柱爆炸作用后残余承载力试验研究 [J].建筑结构学报，2016，37（5）：155-161.
Wang Hongwei, Wu Chengqing, Yang Lizao, Zhou Yun, Li Peng. Experimental research on residual bearing capacity of full-scaleconcrete-filled steel tubular column after explosion [J]. Journal of Building Structures, 2016,37(5):155-161.(in Chinese)
[15] Zhang Fangrui, Wu Chengqing, Wang Hongwei, et al. Numerical simulation of concrete filled steel tube columns against[J]. Thin-Walled Structures, 2015, 92: 82-92.
[16] Fangrui Zhang, Chengqing Wu, ZhongXian Li, et al. Residual axial capacity of CFDST columns in filled with UHPFRC after close-range blast loading. Thin-Walled Structures, 2015, 96(1):314-327.
[17] 邹慧辉，陈万祥，郭志昆，等. 火灾后钢管RPC柱抗爆性能试验研究[J]. 振动与冲击, 2016, 35(13): 1-7.
Zou Huihui, Chen Wangxiang, Guo Zhikun, et al.
Tests for blast-resistant capicities of RPC filled steel tubular column after exposure to fire [J]. Journal of Vibration and Shock, 2016, 35(13): 1-7.(in Chinese)
[18] YANG H，AN L H，ANG Y C． Effects of heating and loading histories on post fire cooling behaviour of concrete filled steel tubular columns ［J］． Journal of ConstructionalSteel Ｒesearch 2008，4( 5) : 556 － 570．
[19] Livermore Software Technology Corporation. LS-DYNA user's manual version 971. Livermore, CA: Livermore Software Technology Corporation; 2013.
[20] 吴波. 火灾后钢筋混凝土结构的力学性能[M]. 北京: 科学出版社, 2003.
[21] 李海艳，郑文忠，罗百福. 高温后RPC立方体抗压强度退化规律研究 [J]. 哈尔滨工业大学学报，2012，44（4）：17-22.
Li Haiyan, Zheng Wenzhong, Luo Baifu. Experimental research on compressive strength degradation of reactive powder concrete after high temperature [J]. Journal of Harbin Institute of Technology, 2012, 44（4）: 17-22. (in Chinese)
[22] 韩林海. 钢管混凝土理论与实践[M]. 北京: 科学出版社, 2007.
[23] 郑文忠,王睿,王英. 活性粉末混凝土热工参数试验研究[J]. 建筑结构学报, 2014, 35(9): 107-114.
Zheng Wenzhong，Wang Rui，Wang Ying. Experimental study on thermal parameter of reactive powder concrete[J]. Journal of Building Structures, 2014, 35(9): 107-114.(in Chinese)
[24] Han LH, Yang H, Cheng SL. Residual Strength of Concrete Filled RHS Stub Columns after Exposure to High Temperatures. Advances in Structural Engineering-An International Journal, 2002, 5(2):123-134.
[25] 杜咏,楼国彪,张海燕, 等. 结构工程防火[M]. 武汉: 武汉大学出版社, 2014.
[26] 师燕超. 爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理 [D]. 天津：天津大学，2009:76-77.
Shi Yanchao. Dynamic response and damage modes of reinforced concrete columns under blast loading are studied [D]. Tianjin: Tianjin University,2009:76-77.(in Chinese)
[27] 阎石,刘蕾,齐宝欣, 等. 爆炸荷载作用下方钢管混凝土柱的动力响应及破坏机理[J]. 防灾减灾工程学报, 2011, 31(5): 477-482.
Yan Shi, Liu Lei, Qi Baoxin, et al. Dynamic Response and Failure Mode Analysis of Concrete In filled Rectangular Steel Tube Columns under Blasting Loading[J]. Journal of Disaster Prevention and Mitigation Engineering, 2011, 31(5): 477-482. (in Chinese)
