混凝土结构火灾损伤的热发光实验研究
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摘要
在总结石英热发光特性的基础上,提出了应用石英热发光实验技术,诊断火灾后混凝土的烧伤程度,并应用预特大火灾的工程实践.结果表明,混凝土中的石英砂辉光曲线,客观反映了混凝土经历的温度上限,该方法与混凝土与混凝土微观结构受热破坏的微观结构研究和现有常规检测手段相结合,将对混凝土火灾损伤评估技术带来新的突破和发展.
On the basis of summarizing the characteristics of quartz thermoluminescence,we put forward the application of quartz thermoluminescence experimental technology to diagnose the degree of concrete burns after fire and the engineering practice of applying pre-extra-large fire. The results show that the glow curve of quartz sand in concrete objectively reflects the upper limit temperature by concrete. This method brings the new breakthroughs and developments to the fire damage assessment technology of concrete by combining the research on the microstructure of thermal damage of concrete and the concrete with the existing conventional detection methods.
On the basis of summarizing the characteristics of quartz thermoluminescence,we put forward the application of quartz thermoluminescence experimental technology to diagnose the degree of concrete burns after fire and the engineering practice of applying pre-extra-large fire. The results show that the glow curve of quartz sand in concrete objectively reflects the upper limit temperature by concrete. This method brings the new breakthroughs and developments to the fire damage assessment technology of concrete by combining the research on the microstructure of thermal damage of concrete and the concrete with the existing conventional detection methods.
引文
[1]陆洲导,苏磊.我国混凝土结构火灾(高温)后损伤机理与评估方法的研究进展和发展趋势[J].建筑结构学报,2010,31(S2):202-209.
[2]杜红秀.混凝土结构火灾损伤评估方法研究进展[J].工程质量,2006(4):8-14.
[3]王孔藩,许清风,刘挺林.火灾后混凝土结构损伤的鉴定和对策[J].施工技术,2005(8):9-11.
[4]刘朝峰,杜丽衡,郭小东,等.火灾后既有结构混凝土损伤评估的突变模型[J].中国安全生产科学技术,2016,12(12):33-36.
[5]王子毅,韩阳,王威.火灾后混凝土损伤综合评价的分形-插值模型[J].混凝土,2012(2):44-47.
[6]逄靖华,陆洲导,袁廷朋,等.混凝土高温试验及高温后抗压残余强度研究[J].四川建筑科学研究,2007(3):71-73,78.
[7]柴松华,杜红秀,阎蕊珍.高强混凝土高温后轴心抗压强度试验研究[J].硅酸盐通报,2013,32(11):2341-2345.
[8]郑文忠,闫凯,王英.预应力混凝土结构抗火研究进展[J].建筑结构学报,2011,32(12):52-61.
[9]刘红彬,李康乐,鞠杨,等.高强高性能混凝土的高温力学性能和爆裂机理研究[J].混凝土,2009(7):11-14.
[10]董香军,丁一宁,王岳华.高温条件下混凝土的力学性能与抗爆裂[J].工业建筑,2005(S1):703-705,716.
[11]陈磊,李彬,滕桃居,等.混凝土高温力学性能分析[J].混凝土,2003(7):26-28.
[12]米洛瓦诺夫Aф.耐火钢筋混凝土结构计算[M].固永铨,译.北京:冶金工业出版社,1981.
[13]韩阳,蒋锐,王威.石英热发光特性在火灾后混凝土构件损伤检测中的应用[J].消防科学与技术,2007(2):118-122.
[14]李源,王长秋,王时麒,等.天然萤石的热发光研究[J].岩石矿物学杂志,2016,35(S1):68-72.
[15][苏]A.C.马尔富宁.矿物的谱学、发光和辐射中心[M].蔡秀成,译.北京:科学出版社,1984.
[16]FRANERS F.Thermoluminescence test for fire damaged concrete[J].Magazine of Concrete Research,1980,32:112-116.
[17]LI M,QIAN C X,SUN W.Mechanical properties of high-strength concrete after fire[J].Cement and Concrete Research,2004,34:1001-1005.
[18]韩阳,孙新河,唐丽,等.混凝土火灾损伤的热发光诊断[C]//河南省首届青年学术论文集.北京:中国科学技术出版社,1995:272-275.
[19]裴静娴,韩阳,孙新河.用热发光方法评定火灾后混凝土构件的烧伤程度[J].科学通报,1996,41(15):1409-1412.
[20]PEI J X,HAN Y,SUN X H.Determining burn degree of fire-damaged concrete constructions by thermo luminescence[J].Chinese Science Bulletin,1997,42(21):1829-1833.
[2]杜红秀.混凝土结构火灾损伤评估方法研究进展[J].工程质量,2006(4):8-14.
[3]王孔藩,许清风,刘挺林.火灾后混凝土结构损伤的鉴定和对策[J].施工技术,2005(8):9-11.
[4]刘朝峰,杜丽衡,郭小东,等.火灾后既有结构混凝土损伤评估的突变模型[J].中国安全生产科学技术,2016,12(12):33-36.
[5]王子毅,韩阳,王威.火灾后混凝土损伤综合评价的分形-插值模型[J].混凝土,2012(2):44-47.
[6]逄靖华,陆洲导,袁廷朋,等.混凝土高温试验及高温后抗压残余强度研究[J].四川建筑科学研究,2007(3):71-73,78.
[7]柴松华,杜红秀,阎蕊珍.高强混凝土高温后轴心抗压强度试验研究[J].硅酸盐通报,2013,32(11):2341-2345.
[8]郑文忠,闫凯,王英.预应力混凝土结构抗火研究进展[J].建筑结构学报,2011,32(12):52-61.
[9]刘红彬,李康乐,鞠杨,等.高强高性能混凝土的高温力学性能和爆裂机理研究[J].混凝土,2009(7):11-14.
[10]董香军,丁一宁,王岳华.高温条件下混凝土的力学性能与抗爆裂[J].工业建筑,2005(S1):703-705,716.
[11]陈磊,李彬,滕桃居,等.混凝土高温力学性能分析[J].混凝土,2003(7):26-28.
[12]米洛瓦诺夫Aф.耐火钢筋混凝土结构计算[M].固永铨,译.北京:冶金工业出版社,1981.
[13]韩阳,蒋锐,王威.石英热发光特性在火灾后混凝土构件损伤检测中的应用[J].消防科学与技术,2007(2):118-122.
[14]李源,王长秋,王时麒,等.天然萤石的热发光研究[J].岩石矿物学杂志,2016,35(S1):68-72.
[15][苏]A.C.马尔富宁.矿物的谱学、发光和辐射中心[M].蔡秀成,译.北京:科学出版社,1984.
[16]FRANERS F.Thermoluminescence test for fire damaged concrete[J].Magazine of Concrete Research,1980,32:112-116.
[17]LI M,QIAN C X,SUN W.Mechanical properties of high-strength concrete after fire[J].Cement and Concrete Research,2004,34:1001-1005.
[18]韩阳,孙新河,唐丽,等.混凝土火灾损伤的热发光诊断[C]//河南省首届青年学术论文集.北京:中国科学技术出版社,1995:272-275.
[19]裴静娴,韩阳,孙新河.用热发光方法评定火灾后混凝土构件的烧伤程度[J].科学通报,1996,41(15):1409-1412.
[20]PEI J X,HAN Y,SUN X H.Determining burn degree of fire-damaged concrete constructions by thermo luminescence[J].Chinese Science Bulletin,1997,42(21):1829-1833.