高层建筑物单向三折叠爆破拆除数值模拟

摘要

为了研究高层建筑物爆破拆除倾倒过程及倒塌效果,以宁波一大厦单向三折叠爆破拆除为例,对其爆破拆除过程进行了数值模拟.根据大厦的实体结构,采用LS-DYNA对其建立了分离式共节点模型,对建筑物倒塌过程进行了数值模拟计算,分析了主要承重梁的内部结构变化,并与实际爆破拆除过程进行了对比.结果表明,采用分离式共节点模型可以很好地模拟高层建筑物倒塌过程,且模拟的倒塌过程与实际的倒塌过程比较吻合,可为类似工程提供参考.%In order to study the collapse process and the effect of high-rise building blasting demolition,taking one-way three-fold blasting demolition in Ningbo as example,the blasting process was numerically simulated.According to the physical structure of the building,the separate common node model was established by LS-DYNA.The numerical simulation was carried out on the collapse process of the building.Internal structure change of the main bearing beams was analyzed and compared with the actual blasting demolition process.The results showed that high-rise building collapse process could be well simulated using separate common node model.The simulation of the collapse process and the actual collapse process was consistent.It could provide a reference for similar projects.