王希之,吴建源,闫军,柴金泉

• 1:解放军理工大学工程兵工程学院

摘要(Abstract)：

介绍在倒塌空间有限的条件下,180 m高钢筋混凝土烟囱采用距离地面25 m的高位爆破切口爆破拆除的基本设计情况,运用Ansys/Ls-Dyna软件模拟烟囱的倒塌过程,模拟结果与实际拆除结果吻合很好。结合摄影监测和数值模拟,分析了180 m烟囱高位切口爆破拆除的倒塌过程、烟囱倒塌时支撑部失稳破坏过程及其受力情况,研究表明烟囱在爆破切口形成后1.1~1.35 s时支撑部于初始闭合角处开始破坏并向后发展,1.85~2.0 s时支撑部沿水平方向破坏断裂,支撑部破坏过程中中性轴不断后移。

关键词(KeyWords)： 爆破拆除;高位爆破切口;倒塌过程;数值模拟;180 m高混凝土烟囱

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王希之,吴建源,闫军,柴金泉

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