拱形钢包混凝土防护门动力学特性分析
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摘要
本文对双扇钢包混凝土拱形防护门进行了动力学特性分析。首先建立了拱形防护门三维有限元模型,防护门模型由门扇、门铰页、门框和坑道岩体四部分组成。由于防护门在冲击波作用下的结构形式是变化的,所以计算得到了多种边界条件下防护门的固有频率及相应的振型。然后对防护门前爆炸冲击波超压时间历程曲线进行频谱分析,发现冲击波能量集中于低频区间,涵盖防护门的主要振动频率。其研究结果为进一步防护门在核、常规爆炸冲击波作用下的动力学响应分析奠定了基础。
The dynamic characteristic analysis of certain double-wing vaulted reinforced concrete protective door is presented.Firstly a three-dimensional finite element model of the protective door is established,which is composed of four parts,door wing,door hinge,door frame and sap.Then the natural frequencies and modal shapes are obtained in many kinds of the boundary conditions,because the door's structural form is variable under blast waves.Finally,after the spectrum analysis of blast shock wave overpressure-time curve,the results show that the shock wave energy mainly focuses on lower frequency range and the range contains most major natural frequencies of the protective door.This paper research provides a scientific basis for the further dynamic response analysis of the protective door under the nuclear and general blast wave loadings.
The dynamic characteristic analysis of certain double-wing vaulted reinforced concrete protective door is presented.Firstly a three-dimensional finite element model of the protective door is established,which is composed of four parts,door wing,door hinge,door frame and sap.Then the natural frequencies and modal shapes are obtained in many kinds of the boundary conditions,because the door's structural form is variable under blast waves.Finally,after the spectrum analysis of blast shock wave overpressure-time curve,the results show that the shock wave energy mainly focuses on lower frequency range and the range contains most major natural frequencies of the protective door.This paper research provides a scientific basis for the further dynamic response analysis of the protective door under the nuclear and general blast wave loadings.
引文
[1]陆新征,江见鲸.抗爆门在爆炸荷载作用下有限元动力数值模拟[J].防护工程,2003,25(1):14-17.(Lu Xinzheng,Jiang Jianjing.Dynamic finite elementsimulation of blast-resistant doors under explosion load[J].Protective Engineering,2003,25(1):14-17(in Chinese)
[2]战颂,徐永君,张均锋.钢包砼拱形防护门有限元模态分析[J].地下空间与工程学报,2006,2(6):967-970.(Zhan Song,Xu Yongjun,Zhang Junfeng.Themodal analysis of certain reinforce concrete protectivedoor using finite element method[J].Chinese Journal ofUnderground Space and Engineering,2006,2(6):967-970.(in Chinese))
[3]程伟,赵寿根,顾忠明,等.鼓形叠层壳高抗力门静载试验研究[J].实验力学,2006,21(2):247-252.(Cheng Wei,Zhao Shougen,Gu Zhongming.Static ex-periments of drum multilayer high resistant doors[J].Journal of Experimental Mechanics,2006,21(2):247-252.(in Chinese))
[4]何翔,庞伟宾,曲建波.防护门在空气冲击波和破片作用下的破坏[J].爆炸与冲击,2004,24(5):475-479.(He Xiang,Pang Weibin,Qu Jianbo.Protectivedoor damaged by air shock wave and fragment arisenfrom explosion in prototype tunnel[J].Explosion andShock Waves,2004,24(5):475-479.(in Chinese))
[5]白金泽.LS-DYNA3D理论基础与实例分析[M].北京:科学出版社,2005.(Bai Jinze.LS-DYNA3D theoryand example problems manual[M].Beijing:SciencePress,2005.(in Chinese))
[6]杨剑,张璞,陈火红.新编MD NASTRAN有限元实例教程[M].北京:机械工业出版社,2008.(Yang Jian,Zhang Pu,Chen Huohong.New MD NASTRAN FEMproblems tutorial[M].Beijing:China Machine Press,2008.(in Chinese))
[7]Grant Sitton.MSC/NASTRAN basic dynamic analysisuser’s guide[M].Los Angeles:The MacNeal-Sch-wendler Corporation,1997.
[8]杜修力,廖维张,田志敏.炸药爆炸作用下地下结构的动力响应分析[J].爆炸与冲击,2006,26(5):474-480.(Du Xiuli,Liao Weizhang,Tian Zhimin.Dy-namic response analysis of underground structures underexplosion-induced loads[J].Explosion and ShockWaves,2006,26(5):474-480.(in Chinese))
[9]国胜兵,王明洋,赵跃堂.爆炸地震波作用下地下结构动力响应数值分析[J].世界地震工程,2004,20(4):137-142.(Guo Shengbing,Wang Mingyang,ZhaoYuetang.Dynamic numerical analysis of undergroundstructures under action of explosion seismic wave[J].World Information on Earthquake Engineering,2004,20(4):137-142.(in Chinese))
[10]郑颖人,李秀地.防护门破坏后剩余冲击波传播规律的试验[J].解放军理工大学学报(自然科学版),2007,8(5):409-412.(Zheng Yingren,Li Xiudi.Model tests to determine In-tunnel blast leakage withprotective doors destruction[J].Journal of PLA Univer-sity of Science and Technology(Natural Science Edi-tion),2007,8(5):409-412.
[2]战颂,徐永君,张均锋.钢包砼拱形防护门有限元模态分析[J].地下空间与工程学报,2006,2(6):967-970.(Zhan Song,Xu Yongjun,Zhang Junfeng.Themodal analysis of certain reinforce concrete protectivedoor using finite element method[J].Chinese Journal ofUnderground Space and Engineering,2006,2(6):967-970.(in Chinese))
[3]程伟,赵寿根,顾忠明,等.鼓形叠层壳高抗力门静载试验研究[J].实验力学,2006,21(2):247-252.(Cheng Wei,Zhao Shougen,Gu Zhongming.Static ex-periments of drum multilayer high resistant doors[J].Journal of Experimental Mechanics,2006,21(2):247-252.(in Chinese))
[4]何翔,庞伟宾,曲建波.防护门在空气冲击波和破片作用下的破坏[J].爆炸与冲击,2004,24(5):475-479.(He Xiang,Pang Weibin,Qu Jianbo.Protectivedoor damaged by air shock wave and fragment arisenfrom explosion in prototype tunnel[J].Explosion andShock Waves,2004,24(5):475-479.(in Chinese))
[5]白金泽.LS-DYNA3D理论基础与实例分析[M].北京:科学出版社,2005.(Bai Jinze.LS-DYNA3D theoryand example problems manual[M].Beijing:SciencePress,2005.(in Chinese))
[6]杨剑,张璞,陈火红.新编MD NASTRAN有限元实例教程[M].北京:机械工业出版社,2008.(Yang Jian,Zhang Pu,Chen Huohong.New MD NASTRAN FEMproblems tutorial[M].Beijing:China Machine Press,2008.(in Chinese))
[7]Grant Sitton.MSC/NASTRAN basic dynamic analysisuser’s guide[M].Los Angeles:The MacNeal-Sch-wendler Corporation,1997.
[8]杜修力,廖维张,田志敏.炸药爆炸作用下地下结构的动力响应分析[J].爆炸与冲击,2006,26(5):474-480.(Du Xiuli,Liao Weizhang,Tian Zhimin.Dy-namic response analysis of underground structures underexplosion-induced loads[J].Explosion and ShockWaves,2006,26(5):474-480.(in Chinese))
[9]国胜兵,王明洋,赵跃堂.爆炸地震波作用下地下结构动力响应数值分析[J].世界地震工程,2004,20(4):137-142.(Guo Shengbing,Wang Mingyang,ZhaoYuetang.Dynamic numerical analysis of undergroundstructures under action of explosion seismic wave[J].World Information on Earthquake Engineering,2004,20(4):137-142.(in Chinese))
[10]郑颖人,李秀地.防护门破坏后剩余冲击波传播规律的试验[J].解放军理工大学学报(自然科学版),2007,8(5):409-412.(Zheng Yingren,Li Xiudi.Model tests to determine In-tunnel blast leakage withprotective doors destruction[J].Journal of PLA Univer-sity of Science and Technology(Natural Science Edi-tion),2007,8(5):409-412.
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