王其磊++李本利++贾春雷++侯耀华
摘 要:消防安全可靠性评价可为超高层建筑消防安全设计与管理提供重要的决策依据,其关键在于如何建立合适的超高层建筑消防安全评价指标体系和合理的确定各评价指标的权重。根据超高层建筑消防安全的主要特点,提出了由主动防火、被动防火和消防安全管理3个子系统及其指标集组成的超高层建筑消防安全评价指标体系。为有效挖掘超高层建筑消防安全评价指标体系中主、客观评价信息,改善常规熵权法不足,提出基于信息熵的方法确定评价体系中各指标的权重,结合权重计算函数综合确定各指标的主客观权重,然后依据改进模糊物元模型对超高层建筑消防安全可靠性进行评价,并结合实例进行验证。结果表明:基于熵权与模糊物元模型的超高层建筑消防安全的整体性与系统性较强,评价效果与专家分析基本一致,说明该方法具有一定的应用价值。
关键词:超高层建筑 熵权 模糊物元 消防安全 可靠性评价
中图分类号:X93 文献标识码:A 文章编号:1674-098X(2016)10(c)-0092-03
Reliability evaluation of Fire Safety of Super High Rise Building based on Entropy Weight and Fuzzy Matter Element Model
Wang Qilei* Li BenLi Jia Chunlei Hou Yaohua
(Chinese Peoples Armed Police Forces Aorces Academy, Langfang Hebei, 065000, China)
Abstract:Reliability evaluation of fire safety can provide important decision-making basis for the design and management of super high-rise building fire safety design, the key lies in how to establish a suitable index system for the fire safety evaluation and reasonable evaluation of the weight of each evaluation index. According to the main characteristics of fire safety in super high-rise building, the fire safety evaluation index system of super high rise building is put forward, which is composed of three subsystems: active, passive and fire safety management. In order to effectively explore the main and objective evaluation information of fire safety evaluation index system of high rise building, improve the conventional entropy weight method, propose a method based on information entropy to determine the weight of each index in the evaluation system. The results show that the overall and systematic characteristics of fire safety of high-rise buildings based on entropy weight and fuzzy matter element model, and the evaluation results are consistent with the analysis of the experts, which shows that this method has certain application value.
Key Words:Super high-rise; Entropy weight; Fuzzy matter element; Fire safety; Reliability evaluation
超高層建筑是现代社会经济、技术与文化的综合体,由于其楼层多、体量大、结构复杂、功能多样化,在相同的防火条件下,超高层建筑比多层建筑和普通高层建筑的火灾危害性更大,一旦发生火灾,外部救援和灭火装备几乎无效,易造成相对重大的损失和伤亡事故。目前,国内外相关研究明确了超高层建筑必须立足于自救,即依托建筑内部固定消防设施进行灭火救援和疏散[1-3]。超高层建筑消防安全影响因素众多,同时这些因素之间还存在着一定的联系,如何评价超高层建筑物中消防安全影响因素及指标体系对于整个消防安全系统起着至关重要的作用。
该文依据超高层建筑规范、专家评价及相关监测检查数据,并结合熵权法对评价指标进行赋值,利用模糊物元模型对超高层建筑消防安全进行评价,得出超高层建筑消防安全各评价指标及系统安全的定性定量评价结果,并列举实例评价该建筑的消防安全程度。
1 影响消防安全的评价指标
建立合理的评价指标体系是超高层建筑消防安全评价模型建立的基础,建立指标体系要客观地反映消防安全评价因素的构成及内在联系,并且能够把各评价指标划分为一个有序的层次使之条理化,同时考虑评价指标数据的可获得性。