框架结构爆破拆除分离式模拟研究Simulation Research on Separate Model of Framed Structure Explosive Demolition
言志信,刘龙泉,刘培林,叶振辉
摘要(Abstract)：
随着爆破拆除结构及其所处环境日趋复杂,爆破拆除理应向拆除过程可控制、爆破效果可预测的方向发展。采用共用节点分离式建立模型,运用ANSYS/LS-DYNA软件模拟框架结构定向爆破拆除的倒塌过程。通过改变材料的失效应力分析了不同材料强度对结构倒塌效果的影响,数值模拟结果表明材料强度与倒塌位移成正相关。通过对混凝土和钢筋单元应力—时程曲线的分析指出共用节点分离式模型能够较好地反映混凝土和钢筋2种材料的力学性能差异。
关键词(KeyWords)： 爆破拆除;框架结构;分离式模型;力学性能;ANSYS/LS-DYNA
基金项目(Foundation): 甘肃省科技计划资助(科技支撑计划项目1011GKCA019);; 甘肃省建设科技攻关项目(JK2010-43)
作者(Author): 言志信,刘龙泉,刘培林,叶振辉
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