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在34层高度的试验塔上,采用定流量排水装置排水,考察伸顶通气排水系统和特殊单立管排水系统在不同负压缓解器安装工况下的系统压力分布,探究负压缓解器对高层建筑排水系统负压的缓解效果。为达到较好的负压缓解效果,建议在伸顶通气排水系统每层横支管及系统顶部均设置负压缓解器;在特殊单立管系统每层横支管设置负压缓解器,系统顶部设置通气帽。
On the 34-storey test tower, the discharge of constant-flow drainage device was used to study the system pressure distribution under different negative pressure relief device installation conditions of the over-vent aeration system and the special single- Negative pressure relief effect of drainage system in highrise building. In order to achieve a better negative pressure relief effect, it is suggested that a negative pressure relief device be provided on each horizontal branch pipe and the top of the system in the overhead ventilation and drainage system; a negative pressure relief device is provided on each horizontal branch pipe of the special single-riser system; Vent cap.