数值模拟在朱旺沱宾馆爆破拆除中的应用

摘要

针对朱旺沱宾馆四邻环境复杂的情况,提出了3种爆破方案:定向爆破、单向折叠爆破、单向双折叠爆破.为了对所提出的方案进行选取,利用有限元分析软件ANSYS/LS-DYNA建立分离式共节点模型,对3种方案进行了预演.根据爆破要求以倒塌长度、爆堆高度为指标确定了爆破方案为单向双折叠爆破,并根据数值模拟结果对此方案进行优化,最终取得了较好的爆破效果.研究结果表明,利用有限元分析软件ANSYS/LS-DYNA可对复杂环境下高层建筑物精细爆破拆除方案的确定提供依据.%Aiming at the complex surrounding of Zhuwangtuo hotel neighbors, three kinds of blasting scheme were put forward,the directional blasting, unidirectional folding blasting, and unidirectional two-fold blasting. In order to select the optimized prngram,the software ANSYS/LS-DYNA was used to establish the common node separate model for previewing those three kinds scheme. According to the blasting requirements,the collapse length and rock pile height as an indicator,the unidirectional two-fold blasting was determined as the blasting scheme,and with opti-mized by the numerical simulation,and the good blasting effect was eventually obtained. The results show that,on the complex surrounding of high-rise building, the finite element analysis software ANSYS/LS-DYNA can provide a ba-sis to determine fine blasting scheme.