在34层高度的试验塔上,采用定流量排水装置排水,考察不同排水流量在各排水系统中所产生的压力,探究压力与流量之间的关系,得出定流量排水时系统相应的排水能力,并进行多角度分析比较。结果表明:定流量排水时,自循环通气、苏维托和60%的伸顶通气系统均是负压先达到判定值,主副通气立管+环形通气管、内螺旋管+旋流器和66%的专用通气系统则是正压先达到判定值。 On the 34-storey test tower, the drainage of constant flow drainage device was adopted to investigate the pressure generated by different drainage flow in each drainage system, and the relationship between pressure and flow was explored to obtain the corresponding drainage capacity , And conduct multi-angle analysis and comparison. The results show that the self-circulatory ventilation, the Suvito and 60% of the overhead ventilation systems all reach the negative pressure first, the main and auxiliary ventilation risers + annular ventilation pipes, the inner spiral pipe + cyclone 66% of the dedicated ventilation system is the pressure to reach the first judgment value.