| 双曲线冷却塔爆破拆除数值模拟研究 |
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| 引用本文： | 李胜林,刘殿书,刘凯,梁书锋. 双曲线冷却塔爆破拆除数值模拟研究[J]. 北京理工大学学报, 2014, 34(2): 123-126,142 |
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| 作者姓名： | 李胜林 刘殿书 刘凯 梁书锋 |
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| 作者单位： | 1.中国矿业大学(北京) 力学与建筑工程学院, 北京 100083 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助项目（2010QL05） |
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| 摘 要： | 利用LS-DYNA对北京京丰热电厂95 m高钢筋混凝土双曲线冷却塔爆破拆除进行模拟分析，建立3种不同爆破切口角的有限元模型，研究切口角度对冷却塔影响，分析了正常的切口角度（234°）下冷却塔倒塌机理. 研究结果表明，较小的切口角度（210°）会造成冷却塔在倒塌过程中屈曲失稳，而较大切口角度（250°）时会造成支撑部位提前破坏，易出现后坐现象，两者均不利于倒塌的控制.
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| 关 键 词： | 爆破拆除 双曲线冷却塔 爆破切口角 |
| 收稿时间： | 2013-06-01 |
Numerical Simulation Study on Blasting Demolition for Hyperbolic Cooling Tower |
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| LI Sheng-lin,LIU Dian-shu,LIU kai and LIANG Shu-feng. Numerical Simulation Study on Blasting Demolition for Hyperbolic Cooling Tower[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2014, 34(2): 123-126,142 |
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| Authors: | LI Sheng-lin LIU Dian-shu LIU kai LIANG Shu-feng |
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| Affiliation: | 1.School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China2.Taishan University, Tai'an, Shandong 271021, China |
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| Abstract: | Three FEA models of the demolition were established for 95 meters high reinforced concrete hyperbolic cooling tower with differernt blasting incision angles to analysis collapse mechanism by LS-DYNA. The result shows that the failure pattern is well collapsed damage when the angle is normal angle (234°), the failure pattern is buckling instability when the angle(210°) is smaller than normal angle,it is easy to produce the recoil when the angle(250°) is larger than normal angle. Two case above are not conductive to control collapse. |
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| Keywords: | explosive demolition hyperbolic cooling tower incision angle |
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