近爆下泡沫混凝土复合结构在地下洞室的抗爆特性数值研究
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摘要
为研究近爆作用下带泡沫混凝土复合结构的地下洞室的抗爆性能,基于LS-DYNA非线性有限元软件,建立了TNT炸药-围岩-锚杆-衬砌结构-空气的爆炸效应全耦合模型。应用ALE多物质流固耦合算法对比分析了普通衬砌结构洞室和带泡沫混凝土夹层的衬砌结构洞室的重要控制测点的应力、空气层压力和位移。测点峰值应力与TM5-855-1的经验公式吻合良好,证明了数值模拟的可靠性。数值研究结果表明,相比普通混凝土夹层,泡沫混凝土夹层能够有效地削弱爆炸冲击波的传播,大幅降低洞室内部空气的压力峰值,降低超压对人体器官的损伤,提高洞室内部人员的生存几率;采用泡沫混凝土夹层的衬砌需加强拱顶区域的刚度以降低顶底板相对位移差。研究结果为地下洞室抗爆设计提供了参考依据。
In order to study the antiknock performance of underground caverns with a foam concrete composite structure under near an explosion,the explosion effect of TNT explosives-surrounding rock-anchor-lining structure-air was established based on a nonlinear finite element LS-DYNA model.ALE multi-material fluid-solid coupling algorithm was used to analyze and compare the stress,air layer pressure and displacement of the important control points of a tunnel with an ordinary lining structure and a lining structure with a foam concrete interlayer.Measured point peak stresses and TM5-855-1 empirical formula are in good agreement.The reliability of the numerical simulation is proved.The numerical results show that the foam concrete sandwich can effectively reduce the propagation of blast shock wave,reduce the peak pressure of air inside the chamber,reduce the damage of overpressure to human organs and improve the survival probability of internal personnel in the chamber,compared with ordinary concrete sandwich.Linings with a foam concrete interlayer need to reinforce the stiffness of the dome area to reduce the relative displacement difference between the top and bottom panels.The research results can provide a reference for anti-explosion design of underground caverns.
In order to study the antiknock performance of underground caverns with a foam concrete composite structure under near an explosion,the explosion effect of TNT explosives-surrounding rock-anchor-lining structure-air was established based on a nonlinear finite element LS-DYNA model.ALE multi-material fluid-solid coupling algorithm was used to analyze and compare the stress,air layer pressure and displacement of the important control points of a tunnel with an ordinary lining structure and a lining structure with a foam concrete interlayer.Measured point peak stresses and TM5-855-1 empirical formula are in good agreement.The reliability of the numerical simulation is proved.The numerical results show that the foam concrete sandwich can effectively reduce the propagation of blast shock wave,reduce the peak pressure of air inside the chamber,reduce the damage of overpressure to human organs and improve the survival probability of internal personnel in the chamber,compared with ordinary concrete sandwich.Linings with a foam concrete interlayer need to reinforce the stiffness of the dome area to reduce the relative displacement difference between the top and bottom panels.The research results can provide a reference for anti-explosion design of underground caverns.
引文
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[12] 涂兵雄,贾金青,王海涛,等.预应力锚杆柔性支护喷射混凝土面层上的土压力[J].岩土力学,2013,34(12):3567-3572,3579.(TU Bing-xiong,JIA Jin-qing,WANG Hai-tao,et al.Earth pressure on shotcrete of flexible retaining method with prestressed anchor [J].Rock and Soil Mechanics,2013,34(12):3567-3572,3579.(in Chinese))
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[14] 徐礼华,池寅,李荣渝.钢纤维混凝土深梁非线性有限元分析在ANSYS中的实现[J].岩土力学,2008,29(9):2577-2582.(XU Li-hua,CHI Yin,LI Rong-yu.Realization of ANSYS for nonlinear finite element analysis of steel fiber reinforced concrete deep beams[J].Rock and Soil Mechanics,2008,29(9):2577-2582.(in Chinese))
[15] Holmquist T J,Johnso G R.A computational constitutive for concrete subjected to large strains [A].Proceeding of 14t h International Symposium on Ballistics [C].Canad,1993.
[16] Schwer L.Modeling rebar:the forgotten sister in reinforced concrete modeling[A].13t h International LS -DYNA Users Conference[C].2014.
[17] 张小勇,龚顺风.隧道内爆炸作用下衬砌结构损伤机理及抗爆性能研究[J].振动与冲击,2013,32(22):193-199.(ZHANG Xiao -yong,GONG Shun-feng.Damage mechanism and anti-explosion behavior of tunnel lining structures under internal blast loading[J].Journal of Vibration and Shock,2013,32(22):193-199.(in Chinese))
[18] 王维国,陈育民,刘汉龙,等.基于SPH-FEM耦合法的土体爆炸效应数值研究[J].岩土力学,2013,34(7):2104-2110.(WANG Wei-guo,CHEN Yu-min,LIU Han-long,et al.Numerical simulation of explosion in soil based on a coupled SPH-FEM algorithm[J].Rock and Soil Mechanics,2013,34(7):2104-2110.(in Chinese))
[19] 陈剑杰,孙钧,林俊德,等.强爆炸应力波作用下岩石地下洞室的破坏现象学[J].解放军理工大学学报(自然科学版),2007,8(6):582-588.(CHEN Jian-jie,SUN Jun,LIN Jun-de,et al.Failure of rock openings under intensive explosion stress wave[J].Journal of PLA University of Science and Technology (Natural Science Edition),2007,8(6):582-588.(in Chinese))
[20] 郭樟根,曹双寅,王安宝,等.化爆作用下FRP加固RC板的试验研究及动力响应分析[J].工程力学,2016,33(3):120-127.(GUO Zhang-gen,CAO Shuang-yin,WANG An-bao,et al.Dynamic response analysis and test study on FRP strengthened RC slabs subjected to blast loading[J].Engineering Mechanics,2016,33(3):120-127.(in Chinese))
[21] 美陆军技术手册TM5-855-1.常规武器防护设计原理[M].方秦,吴平安,张育林,等,译:中国人民解放军工程兵工学院,1997(US Department of the Army,TM5-855-1.Fundamentals of Protective Design For Conventional Weapon[M].FANG Qin,WU Pin-an,ZHANG Yu-lin,et al,translated.Nanjing:PLA University of Science and Technology,1997.(in Chinese))
[22] 范俊奇,董宏晓,高永红,等.爆炸冲击波作用下工事舱室内动物损伤效应试验研究[J].振动与冲击,2013,32(9):35-39.(FAN Jun-qi,DONG Hong-xiao,GAO Yong-hong,et al.Experimental investigation on damage effects on animals under the action of blast wave in a chamber[J].Journal of Vibration and Shock,2013,32(9):35-39.(in Chinese))
[2] 徐干成,顾金才,袁伟泽,等.洞室围岩交叉锚固结构抗爆性能模型试验研究[J].地下空间与工程学报,2014,10(5):1078-1085.(XU Gan-cheng,GU Jin-cai,YUAN Wei-ze,et al.Model test study on explosive resistance of intercross bolted rock mass structure in underground space [J].Chinese Journal of Underground Space and Engineering,2014,10(5):1078-1085.(in Chinese))
[3] 王光勇,顾金才,陈安敏,等.端部消波和加密锚杆支护洞室抗爆能力模型试验研究[J].岩石力学与工程学报,2010,29(1):51-58.(WANG Guang-yong,GU Jin-cai,CHEN An-min,et al.Model test research on anti-explosion capacity of underground openings with end wave-decay by holes and reinforced by dense rock bolts [J].Chinese Journal of Rock Mechanics and Engineering,2010,29(1):51-58.(in Chinese))
[4] Stjern G,Myrvang A.The influence of blasting on grouted rockbolts[J].Tunnelling and Underground Space Technology,1998,13(1):65-70.
[5] Tannant D D,Brummer R K,Yi X.Rockbolt beha-viour under dynamic loading field tests and modelling[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1995,32(6):537-550.
[6] 孙惠香,许金余,杨炳会.爆炸荷载作用下地下拱形结构动力响应样条小波有限元研究[J].计算力学学报,2012,29(4):522-526.(SUN Hui-xiang,XU Jin-yu,YANG Bing-hui.The dynamic reaction study of underground arch structure subjecting to blasting load with spline wavelet finite element numerical simulation[J].Chinese Journal of Computational Mechanics,2012,29(4):522-526.(in Chinese))
[7] 金晶,吴新跃.螺栓连接结构的爆炸冲击破坏[J].爆炸与冲击,2010,30(2):197-202.(JIN Jing,WU Xin-yue.Explosion shock damage of structures assembled by bolted joints[J].Explosion and Shock Waves,2010,30(2):197-202.(in Chinese))
[8] Hallquist J O.LS -DYNA Theoretical Manual[M].California:Livemore Software Technology,1998.
[9] 米双山,刘东升,徐亚卿.基于流固耦合方法的爆炸仿真分析[J].先进制造与管理.2008,27(3):33-35(MI Shuang-shan,LIU Dong-sheng,XU Ya-qing.Explosive simulation based on fluid solid coupling method[J].Advanced Manufacturing and Management,2008,27(3):33-35.(in Chinese))
[10] 张博一,李秋稷,王伟.矿用救生舱瓦斯爆炸动力响应数值模拟[J].哈尔滨工业大学学报,2013,45(4):14-20.(ZHANG Bo -yi,LI Qiu-ji,WANG Wei.Numerical simulation on dynamic response of coal mine refuge chamber under gas explosion loading [J].Journal of Harbin Institute of Technology,2013,45(4):14-20.(in Chinese))
[11] 常永奎,常凯,许超.对LS-DYNA中混凝土HJC模型的探讨[J].吉林建筑工程学院学报,2013,30(2):27-29.(CHANG Yong-kui,CHANG Kai,XU Chao.The discuss of concrete HJC model in LS -DYNA[J].Journal of Jilin Institute of Architectural and Civil Engineering,2013,30(2):27-29.(in Chinese))
[12] 涂兵雄,贾金青,王海涛,等.预应力锚杆柔性支护喷射混凝土面层上的土压力[J].岩土力学,2013,34(12):3567-3572,3579.(TU Bing-xiong,JIA Jin-qing,WANG Hai-tao,et al.Earth pressure on shotcrete of flexible retaining method with prestressed anchor [J].Rock and Soil Mechanics,2013,34(12):3567-3572,3579.(in Chinese))
[13] 张大英,王录民,梁醒培.泡沫混凝土型块填充板的试验与有限元分析[J].同济大学学报(自然科学版),2011,39(1):42-47.(ZHANG Da-ying,WANG Lu-min,LIANG Xing-pei.Experimental study and finite element analysis of cast-in-situ slab with EPS-block[J].Journal of Tongji University(Natural Science),2011,39(1):42-47.(in Chinese))
[14] 徐礼华,池寅,李荣渝.钢纤维混凝土深梁非线性有限元分析在ANSYS中的实现[J].岩土力学,2008,29(9):2577-2582.(XU Li-hua,CHI Yin,LI Rong-yu.Realization of ANSYS for nonlinear finite element analysis of steel fiber reinforced concrete deep beams[J].Rock and Soil Mechanics,2008,29(9):2577-2582.(in Chinese))
[15] Holmquist T J,Johnso G R.A computational constitutive for concrete subjected to large strains [A].Proceeding of 14t h International Symposium on Ballistics [C].Canad,1993.
[16] Schwer L.Modeling rebar:the forgotten sister in reinforced concrete modeling[A].13t h International LS -DYNA Users Conference[C].2014.
[17] 张小勇,龚顺风.隧道内爆炸作用下衬砌结构损伤机理及抗爆性能研究[J].振动与冲击,2013,32(22):193-199.(ZHANG Xiao -yong,GONG Shun-feng.Damage mechanism and anti-explosion behavior of tunnel lining structures under internal blast loading[J].Journal of Vibration and Shock,2013,32(22):193-199.(in Chinese))
[18] 王维国,陈育民,刘汉龙,等.基于SPH-FEM耦合法的土体爆炸效应数值研究[J].岩土力学,2013,34(7):2104-2110.(WANG Wei-guo,CHEN Yu-min,LIU Han-long,et al.Numerical simulation of explosion in soil based on a coupled SPH-FEM algorithm[J].Rock and Soil Mechanics,2013,34(7):2104-2110.(in Chinese))
[19] 陈剑杰,孙钧,林俊德,等.强爆炸应力波作用下岩石地下洞室的破坏现象学[J].解放军理工大学学报(自然科学版),2007,8(6):582-588.(CHEN Jian-jie,SUN Jun,LIN Jun-de,et al.Failure of rock openings under intensive explosion stress wave[J].Journal of PLA University of Science and Technology (Natural Science Edition),2007,8(6):582-588.(in Chinese))
[20] 郭樟根,曹双寅,王安宝,等.化爆作用下FRP加固RC板的试验研究及动力响应分析[J].工程力学,2016,33(3):120-127.(GUO Zhang-gen,CAO Shuang-yin,WANG An-bao,et al.Dynamic response analysis and test study on FRP strengthened RC slabs subjected to blast loading[J].Engineering Mechanics,2016,33(3):120-127.(in Chinese))
[21] 美陆军技术手册TM5-855-1.常规武器防护设计原理[M].方秦,吴平安,张育林,等,译:中国人民解放军工程兵工学院,1997(US Department of the Army,TM5-855-1.Fundamentals of Protective Design For Conventional Weapon[M].FANG Qin,WU Pin-an,ZHANG Yu-lin,et al,translated.Nanjing:PLA University of Science and Technology,1997.(in Chinese))
[22] 范俊奇,董宏晓,高永红,等.爆炸冲击波作用下工事舱室内动物损伤效应试验研究[J].振动与冲击,2013,32(9):35-39.(FAN Jun-qi,DONG Hong-xiao,GAO Yong-hong,et al.Experimental investigation on damage effects on animals under the action of blast wave in a chamber[J].Journal of Vibration and Shock,2013,32(9):35-39.(in Chinese))