模板支架体系中水平杆受力状态研究

Stress state of horizontal bar in template bracket system

通过对H型支架体系进行内力监测,研究混凝土浇筑期间支架水平杆件内力传递、分配规律,试验和数值分析表明:支架设有剪刀撑的断面水平杆可能受压,未设置断面水平杆可能受拉;上部水平杆内力略大于下部;梁、板下水平杆内力值变化趋势相同;水平杆拉、压均不超过5 k N。

Through monitoring the internal force of H - type support system , the internal force transfer and dis-tribution rule of the pledger during concrete placement are studied , test and numerical analysis show^ that the pledger with a pair of scissors may be pressed , and the upper internal force is slightly larger than the lowerpart; the internal force of the pledger under the beam and the plate is the same; tmore than 5kN.