超限高层建筑重力消防供水系统设计探讨  

Discussion Regarding the Design of Gravity Fire Water Supply System for Over‑limit High‑rise Building

作　　者：孙武 SUN Wu(East China Architectural Design&Research Institute,Shanghai 200002,China)

机构地区：[1]华东建筑设计研究院有限公司,上海200002

出　　处：《中国给水排水》2024年第18期85-89,共5页China Water & Wastewater

摘　　要：通过介绍在建的南京416项目的消防供水系统,对超限高层建筑的重力消防供水系统的设计要点及规范争议点进行了探讨,并提出了一种逻辑简单、运行安全有效且易于试验的重力消防供水系统:中间水箱采用转输、减压合设的形式提高系统韧性;重力出水管上设置减压孔板使出流量与系统设计流量匹配,避免阀组频繁启闭;当消防供水系统开始动作时,所有转输泵同时启动,并将溢流管道系统纳入消防供水系统以形成循环。此系统在不同工况下高位和低位的消防水源均可得到有效利用,而且可长时间试验系统的可靠性。By introducing the fire water supply system of the 416 project under construction in Nanjing,the design key points and regulatory disputes of the gravity fire water supply system for the over‑limit high‑rise building were discussed,and a gravity fire water supply system featuring simple logic,safe and effective operation,and easy testing was proposed.The intermediate water tank adopted the form of transfer and decompression to enhance the system’s resilience.The pressure reducing orifice plate on the gravity outlet pipe was configured to align with the discharge flow of the system’s design flow to prevent the valve group from frequently opening and closing.When the fire water supply system commenced operation,all transfer pumps initiated simultaneously,and the overflow piping system was integrated into the fire water supply system to establish a cycle flow.The system could be effectively utilized with both high and low fire water sources under diverse working conditions,and was capable of testing the reliability of the system over an extended period of time.

关 键 词：超限高层建筑 消防加强措施 重力消防供水系统 

分 类 号：TU992[建筑科学—市政工程]