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直灌式加压送风系统已在全国部分城市有所应用,工程实测效果能够满足GB50045-95(2005年版)《高层民用建筑设计防火规范》(以下简称《高规》)的相关要求,但上述案例的楼梯间模式均为前室与楼梯间组合的防烟楼梯间形式,未有合用前室与楼梯间组合模式的相关测试结果。本文采集了合用前室与楼梯间组合模式,采用该加压送风系统的工程案例数据,通过分析发现当消防电梯井和楼梯间同时设置直灌式加压送风系统时,由于产生风速风压的相互干扰,实测效果不能完全满足《高规》与上海市DGJ08-88-2006《上海市工程建设规范——建筑防排烟技术规程》(以下简称《规程》)中对风压与风速的相关要求。
The direct-injection pressurized air supply system has been applied in some cities across the country. The actual measurement results can meet the relevant requirements of GB50045-95 (2005 edition) “High-rise Civil Building Design Fire Prevention Code” (hereinafter referred to as “high gauge”), but The stairwell mode of the above case is a form of smoke-proof stairwell with a combination of an antechamber and stairwell, and there is no relevant test result for the combination mode of the antechamber and the stairwell. In this paper, the combination of anterior chamber and stairwell combination mode is collected, and the engineering case data of the pressurized air supply system are used. Through analysis, it is found that when a direct-injection pressurized air supply system is installed at the same time between the fire elevator shaft and the stairwell, wind speed wind is generated. Pressure mutual interference, the actual measurement effect can not fully meet the “high regulations” and Shanghai DGJ08-88-2006 “Shanghai Construction Standards - Building Smoke Prevention Technical Regulations” (hereinafter referred to as the “procedure”) in the wind pressure and wind speed Relevant requirements.