拆除爆破中钢筋混凝土框架立柱爆高计算模型及影响因素研究

CALCULATION MODEL FOR BLASTING HEIGHT OF REINFORCED CONCRETE FRAME PILLAR AND INFLUENCE FACTORS

通过对拆除爆破中影响钢筋混凝土框架立柱失稳因素的探讨，同时根据结构空间整体性和稳定性理论分析了影响立柱爆高的主要因素，提出了一种切实可行的立柱爆高计算模型。该模型较好地反映了结构立柱在爆破时作为偏心受压杆件，其裸露钢筋骨架具有侧向弹性支撑和侧向水平移动的特性。本文对计算模型进行了理论分析，对选取合理爆高提出了可供参考的理论公式，为工程实践中合理确定立柱爆破高度提供了一定的理论依据。

This paper gives analysis on influence factor of concrete frame pillar collapse in controlled blasting and on main factors of influencing pillar blasting height based on structure space integrity and stability theory A feasible pillar blasting height calculation model which reflects the fact of blasting pillar as partiality pressed pole and the features of exposed reinforcing bar framework possessing side elasticity brace and horizontal move is put forward By way of theory analysis on calculation model,theory formula of how to select reasonable blasting height for reference is derived These formula can provide certain theory basis to decide blasting plan for blasting engineering