摘要
为了对木结构建筑群的火灾危险性进行研究,提出了熵值法-突变理论对贵州某典型木结构建筑群的火灾危险性进行评价。对火灾影响因素进行分析后,从安全管理、周围环境、建筑防火能力、电气防火及建筑消防系统5个方面建立了木结构建筑群火灾危险性评价指标体系。首先通过熵值法确定了底层指标的相对重要度排序,其次根据各指标的重要度利用突变理论计算二层指标的突变隶属值,通过递归运算得到系统总突变隶属值,但由于传统突变评价具有评价值过高的不足,引入数据拟合对评价结果进行修正。结果表明,利用熵值法-突变理论得到的初始计算结果为0.943。数据拟合修正后的突变级数为0.612,评价等级为中度危险。根据国家标准规定木结构建筑的火灾危险评价等级为中度危险,证明了该评价方法的有效性。最后,根据评价结果从安全管理、周围环境、建筑防火能力、电气防火及建筑消防系统5个方面分别提出了一系列措施,从而有效降低了木结构建筑群火灾危险性。
The present paper has proposed a method of joining the entropy method-catastrophe theory with field survey of a typical wooden structure group in Guizhou in hoping to trace and assess the dangerous risk of the fire development in the wooden structure group or groups.Analyzing the factors that may influence the fire spread and development of the wooden group of the house structure,we have established a fire risk evaluation index system for the wooden structure group from the following 5 aspects,that is,the safety management,the surrounding environment,the building fire resistance facilities,the electrical fire protection and the building fire protection mechanism,totally of 5 second-level indicators and 15 three-level indicators.And,first of all,the relative importance ranking of the third-level indicators can be determined by the entropy method.And,next,according to the ranking order of the importance of each indicator,the mutation membership qualification of the second-level indicators can be calculated and worked out via the mutation theory,and,in turn,the total mutation membership status-in-situ of the system can be gained by the recursive operations.Nevertheless,the traditional mutation evaluation may also have the defect that the evaluation value is likely to be too high,which is not consistent with the actual situation and remains in need for data fitting to be adopted to correct the evaluation results.Hence,the results may prove that the initial calculation result obtained via the entropy method-catastrophic theory turns to be 0.943,with the mutation order after the data fitting correction being equal to 0.612,which is just in correspondence with the evaluation level of the moderate risk.And,in such a situation,in accordance with the national standards,the fire hazard evaluation level of the wooden structures should belong to the grade of moderate risk,which can in turn prove the effectiveness of the evaluation method.And,last of all,the evaluation results help us to propose a series of measures from the following 5 aspects:the safety management,the surrounding environment,the building fire resistance,the electrical fire protection and the building fire protection system,so as for us to reduce the overall fire danger and risk of the wooden structure building group effectively and protect the ancient left-over classic buildings,in particular,to protect the classic wooden buildings of historical significance.
作者
韦善阳
石美
孙威
杨欢
高布桐
曲日红
WEI Shan-yang;SHI Mei;SUN Wei;YANG Huan;GAO Bu-tong;QU Ri-hong(School of Mining,Guizhou University,Guiyang 550025,China)
出处
《安全与环境学报》
CAS
CSCD
北大核心
2021年第4期1440-1447,共8页
Journal of Safety and Environment
基金
贵州省科技计划项目(黔科合支撑[2019]2889号)。
关键词
安全工程
危险性评价
木结构建筑群
突变理论
熵值法
safety engineering
risk evaluation
wood structure building group
catastrophe theory
entropy method
