| 烟囱定向爆破拆除倒塌过程 |
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| 引用本文： | 言志信,叶振辉,刘培林.烟囱定向爆破拆除倒塌过程[J].爆炸与冲击,2010,30(6):607-613. |
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| 作者姓名： | 言志信 叶振辉 刘培林 |
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| 作者单位： | 1.西部灾害与环境力学教育部重点实验室,甘肃兰州730000; |
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| 基金项目： | 甘肃省科技支撑计划项目(1011GKCA019); 甘肃省建设科技攻关项目(JK2010-43) |
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| 摘 要： | 针对烟囱爆破拆除,通过建立烟囱倒塌的力学模型,运用数学方法推演了烟囱最大弯矩区域和最
大剪应力区域。此外,采用有限元软件ANSYS/LS-DYNA 对烟囱倒塌过程进行了数值模拟,并与实际倒塌
过程相比较。数值模拟结果表明,在距离地面约1/3、1/2和2/3处,筒体有应力集中现象,这些部位在烟囱倒
塌过程中容易折断,这与理论分析和实际过程相吻合。烟囱折断发生的位置和时间与筒体的切口形状和筒体
材料的力学性能密切相关,砖烟囱和钢筋混凝土烟囱的力学性能存在明显的差异。
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| 关 键 词： | 爆炸力学 力学模型 ANSYS/LS-DYNA 烟囱 爆破拆除 |
Collapsing process of chimney demolition by directional blasting |
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| YAN Zhi-xin,YE Zhen-hui,LIU Pei-lin.Collapsing process of chimney demolition by directional blasting[J].Explosion and Shock Waves,2010,30(6):607-613. |
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| Authors: | YAN Zhi-xin YE Zhen-hui LIU Pei-lin |
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| Institution: | 1.KeyLaboratoryof MechanicsonDisasterandEnvironmentin WesternChina,2.TheMinistryofEducationofChina,Lanzhou730000,Gansu,China; |
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| Abstract: | The basic principles of chimney blasting demolition were introduced.Aimed to the collapsing process of chimneys,the mechanical models were developed to derive the largest ranges of chimney bending moment and shear stress by the mathematical methods.And the collapsing processes of chimneys were simulated numerically by using the finite element software LS-DYNA3D and the simulated results were compared with the actual collapsing process of chimneys.It is revealed that the finite element software LS-DYNA3D can... |
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| Keywords: | mechanics of explosion mechanical model ANSYS/LS-DYNA chimney blasting demolition |
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