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在34层高度的试验塔上,采用瞬间流发生器排水,考察不同排水流量在各专用通气排水系统中所产生的压力,探究压力与流量之间的关系,得出瞬间流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:瞬间流排水时专用通气排水系统内最大正、负压基本发生在系统中间层。与我国《建筑给水排水设计规范》(GB 50015—2009)最大设计排水能力值比较,发现结合管设置方式相同时,瞬间流测试的排水能力(结合管每层接)排序为:DN110×DN110>DN125×DN110>DN110×DN75,结合管隔层接时相应排序为:DN110×DN110>DN110×DN75>DN125×DN110。
On the 34-storey test tower, the instantaneous flow generator drainage was used to investigate the pressure generated by different drainage flows in each special ventilation and drainage system. The relationship between pressure and flow rate was explored, and the corresponding system Drainage capacity, and multi-angle analysis and comparison. The results show that the maximum positive and negative pressure of the special ventilation and drainage system in the instantaneous flow drainage basically occurs in the middle layer of the system. Compared with the maximum designed drainage capacity of China’s Building Water Supply and Drainage Design Code (GB 50015-2009), the drainage capacity of the instantaneous flow test (connection of the pipes at each floor) was found to be DN110 × DN110> DN125 × DN110> DN110 × DN75, combined with the pipe compartment connected to the corresponding order: DN110 × DN110> DN110 × DN75> DN125 × DN110.