深圳地区超高层住宅建筑消防给水系统设计探讨

Discussion on Design of Fire Water Supply System for Super High-rise Residential Building in Shenzhen

消防水泵的选型及消防给水系统工作压力的设计决定了消防系统的供水形式。超高层住宅建筑采用一泵到顶减压阀分区的供水方式,还是消防水泵加转输水箱串联供水方式,应根据住宅建筑的高度、业主的特殊要求综合确定。以深圳某建筑高度为150 m住宅项目的消防水系统供水方式为研究对象,结合《消防给水及消火栓系统技术规范》(GB 50974—2014)要求,对三个设计方案进行了分析对比,认为在深圳地区,150 m以下的超高层住宅建议采用一泵到顶消防供水方式; 150~185 m区间的超高层住宅建议采用电梯机房屋顶设置转输水箱的消防泵串联供水方式; 185 m以上的超高层住宅建议采用避难层设置转输水箱或转输泵的消防泵串联供水方式。

The value of the working pressure and the type of the fire water pump determined the form of the water supply system. In the super high-rise residential building, the water supply mode whether as one pump to the top pressure relief valve partition or the series water supply mode of fire water pump plus transfer water tank, should be determined synthetically according to the height of residential building and the special requirements of the owner. A residential building with height of 150 m in Shenzhen was taken as the research case, three design schemes were analyzed and compared based on the Technical Code for Fire Protection Water Supply and Hydrant Systems （ GB 50974-2014 ）. It is concluded that the super high-rise house under 150 m in Shenzhen is recommended to use a pump to the top of the fire water supply mode, and the super high-rise building between the 150 - 185 m is recommended to use the fire pump in series of water tank in the elevator machine room, and the super high-rise building above 185 m is suggested to adopt the fire pump series water supply mode with transfer water tank or transfer pump on the sheltered floor.