林谋金,薛冰,傅建秋,李战军,刘翼

• 1:西南科技大学环境与资源学院
• 2:宏大爆破有限公司

摘要(Abstract)：

为了预测烟囱倒塌过程姿态与堆散范围,采用共节点分离式钢筋混凝土模型对210 m烟囱超高位切口爆破拆除过程进行数值模拟,并与工程实践进行比较。结果表明:数值模拟得到的上段筒体倒塌过程姿态与实际爆破的倒塌过程姿态高度一致,即上段筒体在下坐阶段被下段筒体切掉两段,其中一段掉落在烟囱内部,另一段掉落在与倒塌方向相反的背部,从而使上段筒体长度由爆破前75 m缩短为着地时46.73 m,与实际倒塌长度44 m相吻合,模拟计算效果比较理想,其计算结果可为加强烟囱背部周围建筑的安全防护提供参考。

关键词(KeyWords)： 烟囱爆破拆除;超高位切口;数值模拟;共节点分离式模型;倒塌过程

Abstract:

Keywords:

基金项目(Foundation): 西南科技大学博士基金(17zx7138);; 广东省产学研合作院士工作站(2013B090400026)

作者(Author): 林谋金,薛冰,傅建秋,李战军,刘翼

参考文献(References)：

• [1]LUCCIONI B M,AMBROSINI R D,DANESI R F.Analysis of building collapse under blast loads[J].Engineering Structures,2004,26(1):63-71.
• [2]迟力源,杨军.250 m超高钢筋混凝土烟囱套入式爆破拆除的数值模拟[J].爆破,2015,32(1):101-105.CHI Li-yuan,YANG Jun.Numerical simulaton of explosive demolition of 250 m-high reinforce concrete chimney[J].Blasting,2015,32(1):101-105.(in Chinese)
• [3]徐鹏飞,刘殿书,张英才,等.钢筋混凝土烟囱高位切口爆破拆除数值模拟研究[J].爆破,2016,33(3):96-100.XU Peng-fei,LIU Dian-shu,ZHANG Ying-cai,et al.Numerical simulation study on explosive demolition of reinforce concrete chimney with high incision[J].Blasting,2016,33(3):96-100.(in Chinese)
• [4]刘将.剪力墙筒体结构爆破拆除的力学分析和数值模拟[D].青岛:山东科技大学,2009.LIU Jiang.Mechanical analysis and numerical simulation of shear wall cylinder structure's blasting demolition[D].Qingdao:Shandong University of Science and Technology,2009.(in Chinese)
• [5]孙细刚,张光雄,王汉军,等.爆破拆除双曲线冷却塔倒塌过程动态仿真[J].工程爆破,2009(1):10-12,84.SUN Xi-gang,ZHANG Guang-xiong,WANG Han-jun,et al.Dynamic simulation of collapse of hyperbolic cooling tower under blasting demolition[J].Engineering Blasting,2009(1):10-12,84.(in Chinese)
• [6]周俊珍,李科斌.烟囱爆破时空中折断现象的数值模拟[J].采矿技术,2014(5):148-150,160.ZHOU Jun-zhen,LI Ke-bin.Numerical simulation of chimney snapped phenomenon under blasting demolition[J].Mining Technology,2014(5):148-150,160.(in Chinese)
• [7]王希之,吴建源,闫军,等.高耸烟囱爆破拆除数值模拟及分析[J].爆破,2013,30(3):43-48,124.WANG Xi-zhi,WU Jian-yuan,YAN Jun,et al.Analysis and numerical simulation of explosive demolition of towering chimney[J].Blasting,2013,30(3):43-48,124.(in Chinese)