切口角度对冷却塔爆破拆除影响研究

切口角度大小对冷却塔爆破拆除倒塌效果具有极其重要的影响,为了研究切口角度对冷却塔的拆除爆破影响,利用Ansys/Ls-dyna建立共节点分离式模型,对冷却塔的倒塌过程进行了简要分析。改变切口角度,对比不同切口角度下的模拟结果,结果表明:由于冷却塔结构的特殊性,其产生的下坐振动包括切口闭合产生的振动和环梁触地振动,且下坐振动大于塌落振动;切口角度为200°时,冷却塔倾倒较快,产生的塌落振动较大;切口角度为240°时,倒塌过程中的倒塌方向偏移较大,产生的下坐振动较大。

Study on Influence of Cut Angle on Explosive Demolition of Cooling Tower

The cut angle has a very important influence on the collapse effectiveness of cooling tower,therefore, to solve this problem,the Ansys/Ls-dyna was used to establish a common node separate model and to simply analyze the actual collapse process of the cooling tower.Through changing the cut angle,the different simulation results were compared.The results show that,due to the special structure of the cooling tower,the sinking downward vibration was caused by the vibration of the incision closure and the touchdown vibration of the ring beam,which is greater than the collapse vibration;when the blasting cut parameters is 200°,the cooling tower is dumped faster,producing a larger collapse vibration;when the blasting cut parameters is 240°,the collapse direction in the collapse offset and sinking downward vibration are larger.