钢筋混凝土高耸构筑物爆破切口参数计算的探讨

针对钢筋混凝土高耸构筑物爆破拆除出现问题较多的情况,建立了钢筋混凝土高耸构筑物定向倒塌的力学模型,提出在计算爆破切口角度时,应计入被炸裸露钢筋的支撑力。从钢结构的设计理论出发,提出了爆破切口高度计算的新方法。对某工程进行了验算,计算结果与实际采用爆破参数吻合,对钢筋混凝土高耸构筑物爆破拆除设计具有指导意义。

STUDY ON CUTTING-SECTION PARAMETERS CALCULATION OF HIGH TUBULAR STRUCTURE OF REINFORCED CONCRETE

Aiming at the problems occurring in the blasting demolition of a high tubular structure of reinforced concrete, the paper presented a mechanical model of direction collapse, suggesting that the holding power of bare reinforcing bar should be considered into the support power in the calculation of the angle of blasting cut. Based on the design principle of steel structure, a new calculation method was brought forward, The calculation results from a project agreed with the parameters used in the demolishing blasting it. The theory will benefit similar project in the future.