考虑抗火性的工业厂房火灾后结构可靠性评级
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摘要
为更全面地反映火灾对工业厂房可靠性的影响,确保火灾后结构安全性评级的准确性,结合我国火灾后工业厂房可靠性评级的特点,加入抗火性这一特殊指标,将耐火等级、火灾裂缝和变形3个因素作为抗火性的评级指标,并确定抗火性等级划分标准。建立基于Vague集相似度量理论的、考虑抗火性的火灾后工业厂房结构可靠性综合评级模型。将模型应用于5个工程实例。结果表明,评级结果与规范评级法的结果一致;与未考虑抗火性的规范评级法相比,量化后的评级指标不仅评级过程清晰,而且能有效避免人为因素导致评级结果出现的误差。
In order to more fully reflect the influence of fire on industrial workshop reliability,and ensure the accuracy of rating of structure safety after fire,the existing reliability rating practice was examined,and the fire resistance was introduced as a new rating indicator,including the refractory grade,fire crack and deformation.Fire resistance rating classification standard was established. A structural reliability comprehensive rating model was bulit for industrial buildings after fire,which considers the fire resistance and is based on Vague set similarity measurement theory. The model was applied to five engineering examples. The results show that the rating results obtained by using the model agree with the results obtained by using the standard rating methods,and that using the model can avoid errors resulted in by human factors.
In order to more fully reflect the influence of fire on industrial workshop reliability,and ensure the accuracy of rating of structure safety after fire,the existing reliability rating practice was examined,and the fire resistance was introduced as a new rating indicator,including the refractory grade,fire crack and deformation.Fire resistance rating classification standard was established. A structural reliability comprehensive rating model was bulit for industrial buildings after fire,which considers the fire resistance and is based on Vague set similarity measurement theory. The model was applied to five engineering examples. The results show that the rating results obtained by using the model agree with the results obtained by using the standard rating methods,and that using the model can avoid errors resulted in by human factors.
引文
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[2]ALIF,NADJAIA,SILCOCKG,et al.Outcomes of amajor research on fire resistance of concrete columns[J].Fire Safety Journal,2004,39(6):433-445.
[3]DBJ08-219—1996,火灾后混凝土构件评定标准[S].DBJ08-219-1996,Concrete member after fire evaluation criteria[S]
[4]CECS252:2009,火灾后建筑结构鉴定标准[S].CECS252:2009,Building structural appraisal standard[S].
[5]李国强,吴波,蒋首超.工程结构抗火研究进展与建议[J].建筑钢结构进展,2010,12(5):13-18.LI Guoqiang,WU Bo,JIANG Shouchao.Research progress and suggestion on fire resistance of engineering structure[J].Progress in Steel Building Structures,2010,12(5):13-18.
[6]徐泽晶,宋玉普,徐有邻.火灾后钢筋混凝土构件可靠性分析的JC法[J].建筑结构,2006,36(12):44-45.XU Zejing,SONG Yupu,XU Youlin.Reliability analysis of reinforced concrete member after fire JC[J].Building Structure,2006,36(12):44-45.
[7]张蓓.某框架结构火灾后的鉴定与加固技术研究[D].郑州:郑州大学,2011.ZHANG Bei.Repairing and strengthening technology study of frame structure after fire[D].Zhengzhou:Zhengzhou University,2011.
[8]GB 50144—2008,工业建筑可靠性鉴定标准[S].GB 50144-2008,Industrial building reliability appraisal standard[S].
[9]李庆森.旧工业建筑再生利用检测评定及脆弱性研究[D].西安:西安建筑科技大学,2015.LI Qingsen.Research on detecting appraisal and vulnerability of old industrial buildings[D].Xi'an:Xi'an University of Architecture and Technology,2015.
[10]周立国,姚安林,付冉,等.Vague集法在油气管道失效可能性分析中的应用[J].中国安全科学学报,2015,25(10):91-96.ZHOU Liguo,YAO Anlin,FU Ran,et al.Application of Vague set method to failure possibility analysis of oil&gas pipeline[J].China Safety Science Journal,2015,25(10):91-96.
[11]GB5007—2011,建筑地基基础设计规范[S].GB5007-2011,Code for design of building foundation[S].
[12]孟海,李慧民.土木工程安全检测、鉴定、加固修复案例分析[M].北京:冶金工业出版社,2016.3:14-218.MENG Hai,LI Huimin.Civil engineering safety inspection,identification,reinforcement repair case analysis[M].Beijing:Metallurgical Industry Press,2016.3:14-218.