【摘要】 针对地铁、国铁同台驳接入铁路枢纽的地铁车站,地铁地面站台位于交通枢纽内部的特殊形式,站台层的排烟方案需根据建筑形式进行特殊考虑。对站台层的排烟方案进行对比分析,通过火灾烟气模拟,对烟气自然扩散、自然排烟和机械排烟3种排烟方案进行对比分析。烟气自然蔓延条件下,能见度无法保证人员安全疏散。由于建筑形式的特殊,无法满足自然排烟条件。为保证安全,设置了机械排烟系统。对与国铁站房结合的综合枢纽中地铁车站排烟方式,应将自然排烟的可行性纳入其初期建筑方案中优先考虑。更多还原

【Abstract】 According to the metro station located on the same platform inside the comprehensive railway hub, the smoke extraction plan at the platform requires special consideration based on the form of the building. The smoke extraction scheme of the metro platform is compared and analyzed. Through fire simulation, the feasibility and effect of three kinds of smoke extraction schemes, such as natural diffusion of smoke, natural smoke extraction and mechanical smoke extraction, are analyzed. Under the condition of natural diffusion of smoke, the visibility can hardly guarantee the safe evacuation of personnel. Due to the special form of the building, natural smoke distraction conditions cannot be met. To ensure safety, mechanical smoke extraction is selected. The feasibility of natural smoke extraction should be prioritized in the initial building program for the metro station in connection with the comprehensive railway hub.更多还原