钢筋混凝土桥梁实用碳化模型
|
摘要
一般大气环境下,混凝土碳化是钢筋锈蚀的前提条件,也是衡量混凝土材料耐久性能的一个重要指标,然而,由于实测碳化深度存在较大的离散性,为准确预测带来很大困难.本文基于混凝土成熟度理论和混凝土强度发展模型,结合在役钢筋混凝土桥梁的历史检测数据,对目前混凝土碳化预测模型进行评估,选取合理的模型类型和参数,建立了钢筋混凝土桥梁实用碳化模型.通过与实际桥梁典型部位的碳化数据对比,表明模型计算结果符合实际桥梁碳化检测结果.
In general atmospheric environments,carbonation is one major cause of reinforcement corrosion.The kinetics of the CO2 penetration through concrete is often used to characterize the durability properties of the material.However,due to the fact that the inspecting results in constructed bridges are discrete,it is difficult to forecast carbonation depth accurately.In this work,an overall theoretical and practical method is developed by considering the universal data in constructed bridges,evaluating the existing models in predicting the depth of carbonation,choosing appropriate styles of models and parameters.Finally,inspection data from bridges with different ages and strength are investigated through performing numerical analysis.It is found that the numerical results are consistent with experimental data.
In general atmospheric environments,carbonation is one major cause of reinforcement corrosion.The kinetics of the CO2 penetration through concrete is often used to characterize the durability properties of the material.However,due to the fact that the inspecting results in constructed bridges are discrete,it is difficult to forecast carbonation depth accurately.In this work,an overall theoretical and practical method is developed by considering the universal data in constructed bridges,evaluating the existing models in predicting the depth of carbonation,choosing appropriate styles of models and parameters.Finally,inspection data from bridges with different ages and strength are investigated through performing numerical analysis.It is found that the numerical results are consistent with experimental data.
引文
[1]Neville A.Consideration of Durability Structures:Past,Present,and Future[J].Materials and Structures,2001,34:114-118.
[2]Mehta P K.Concrete Structure,Properties and Materials[M].Englewood Cliffs,New Jersey:Prentice-Hall,Inc.,1986.
[3]Larrard F D.Modeling the Compressive Strength of Struc-tural Fly Ash Concrete[C]∥Milwaukee:the 5th Interna-tional ACI-CANMET,1995.
[4]Nilson A H.Design of Concrete Structures[M].McGraw-Hill Civil Engineering Series.New York:McGraw-HillCompanies,Inc.,1997.
[5]Carino N J,Lew H S.The Maturity Method:From Theo-ry to Application[R].National Institute of Standards andTechnology.Structures,2001:1-19.
[6]邸小坛,周燕.旧建筑物的检测加固与维护[M].北京:地震出版社,1992.DI Xiaotan,ZHOU Yan.Inspection,Reinforcement andMaintainance of Old Buildings[M].Beijing:EarthquakePress,1992.(in Chinese)
[7]黄可信,吴兴祖.钢筋混凝土结构中钢筋腐蚀与保护[M].北京:中国建筑工业出版社,1983.HUANG Kexin,WU Xingzu.Steel Corrosion and Protec-tion in Reinforced Concrete Structure[M].Beijing:ChinaArchitecture&Building Press,1983.(in Chinese)
[8]Papadakis V G,Vayenas C G,Fardis M N.FundamentalModeling and Experimental Investigation of Concrete Car-bonation[J].ACI Materials Journal,1991,88(4):363-373.
[9]张誉.混凝土结构耐久性概论[M].上海:上海科学技术出版社,2003.ZHANG Yu.Summary of Durability of Concrete Structure[M].Shanghai:Shanghai Scientific&Technical Publish-ers,2003.(in Chinese)
[10]Nishi T.Testing of Concrete[C]∥Proceeding of RILEMSymposium,1962:485-489.
[11]依田彰彦.5年间沿岸に自然暴露したコンクリ一トの性质[J].セメント*コンクリ一ト,1983,435:30-37.Akira Yoda.Carbonated Depth of Concrete Exposed inCoastal Environments[J].Cement&Concrete,1983,435:30-37.(in Japanese)
[12]朱安民.混凝土碳化与钢筋混凝土耐久性[J].混凝土,1992(6):18-22.ZHU Anmin.Carbonation of Concrete and Durability ofReinforced Concrete[J].Concrete,1992(6):18-22.(inChinese)
[13]许丽萍,黄士元.预测混凝土中碳化深度的数学模型[J].上海建材学院学报,1991,4(4):347-357.XU Liping,HUANG Shiyuan.The Mathematical Modelof Reinforced Carbonation Depth in Concrete[J].Journalof Shanghai Institute of Building Materials,1991,4(4):347-357.(in Chinese)
[14]龚洛书,苏曼青,王洪琳.混凝土多系数碳化方程的试验研究[J].建筑科学,1985(5):21-26.GONG Luoshu,SU Manqing,WANG Honglin.Experi-ment Study on Multi-Coefficient Carbonated equation[J].Science of Building,1985(5):21-26.(in Chinese)
[15]Smolczyk H G.Testing of Concrete[C]∥Tokyo:Pro-ceeding of 5th International Symposium on Chemistry ofCement,1968:343-368.
[16]Lesahe-de-Frontenay C.Deterioration and Repair[M].Ⅵed.Bahrain:Bahrain Proc.,1995.
[17]牛荻涛.混凝土结构耐久性与寿命预测[M].北京:科学出版社,2003.NIU Ditao.Durability and Life Prediction of ConcreteStructures[M].Beijing:Science Press,2003.(in Chi-nese)
[18]Larrard F d.Concrete Mixture Proportioning:A Scientif-ic Approach[M].Modern Concrete,New York:Rout-ledge,1999.
[19]Papadakis V G,Vayenas C G,Fardis M N.Physical andChemical Characteristics Affecting the Durability of Con-crete[J].ACI Materials Journal,1991,88(5):186-196.
[20]Al-Khaiat H,Haque M N.Strength and Durability ofLightweight and Normal Weight Concrete[J].Journal ofMaterials in Civil Engineering,1999,11(3):231-235.
[21]Haque M N,Al-Khaiat Kayali O.Long-Term Strengthand Durability Parameters of Lightweight Concrete in HotRegime:Importance of Initial Curing[J].Building andEnvironment,2007,42:3086-3092.
[22]东南大学,天津大学,同济大学,等.混凝土结构[M].北京:中国建筑工业出版社,2001.Dongnan University,Tianjin University,Tongji Univer-sity,et al.Concrete Structure[M].Beijing:China Archi-tecture&Building Press,2001.(in Chinese)
[23]包琦玮.北京地区钢筋混凝土桥梁耐久性研究[D].北京:北京工业大学,2003.BAO Qiwei.Study on Durability of Reinforced Bridge inBeijing[D].Beijing:Beijing University of Technology,2003.(in Chinese)
[24]张恺.钢筋混凝土桥梁耐久性的初步探讨[D].北京:北京工业大学,2002.ZHANG Kai.Study on Durability of Reinforced Bridge[D].Beijing:Beijing University of Technology,2002.(in Chinese)
[25]蒋清野,王洪深,路新瀛.混凝土碳化数据库混凝土碳化分析[R].攀登计划-钢筋锈蚀与混凝土冻融破坏的预测模型,1997.JIANG Qingye,WANG Hongshen,LU Xinying.Database and Analysis of Concrete Carbonation[R].Climbing Plan:Prediction Model on Steel Corrosion andFreeze-Thaw of Concrete,1997.(in Chinese)
[2]Mehta P K.Concrete Structure,Properties and Materials[M].Englewood Cliffs,New Jersey:Prentice-Hall,Inc.,1986.
[3]Larrard F D.Modeling the Compressive Strength of Struc-tural Fly Ash Concrete[C]∥Milwaukee:the 5th Interna-tional ACI-CANMET,1995.
[4]Nilson A H.Design of Concrete Structures[M].McGraw-Hill Civil Engineering Series.New York:McGraw-HillCompanies,Inc.,1997.
[5]Carino N J,Lew H S.The Maturity Method:From Theo-ry to Application[R].National Institute of Standards andTechnology.Structures,2001:1-19.
[6]邸小坛,周燕.旧建筑物的检测加固与维护[M].北京:地震出版社,1992.DI Xiaotan,ZHOU Yan.Inspection,Reinforcement andMaintainance of Old Buildings[M].Beijing:EarthquakePress,1992.(in Chinese)
[7]黄可信,吴兴祖.钢筋混凝土结构中钢筋腐蚀与保护[M].北京:中国建筑工业出版社,1983.HUANG Kexin,WU Xingzu.Steel Corrosion and Protec-tion in Reinforced Concrete Structure[M].Beijing:ChinaArchitecture&Building Press,1983.(in Chinese)
[8]Papadakis V G,Vayenas C G,Fardis M N.FundamentalModeling and Experimental Investigation of Concrete Car-bonation[J].ACI Materials Journal,1991,88(4):363-373.
[9]张誉.混凝土结构耐久性概论[M].上海:上海科学技术出版社,2003.ZHANG Yu.Summary of Durability of Concrete Structure[M].Shanghai:Shanghai Scientific&Technical Publish-ers,2003.(in Chinese)
[10]Nishi T.Testing of Concrete[C]∥Proceeding of RILEMSymposium,1962:485-489.
[11]依田彰彦.5年间沿岸に自然暴露したコンクリ一トの性质[J].セメント*コンクリ一ト,1983,435:30-37.Akira Yoda.Carbonated Depth of Concrete Exposed inCoastal Environments[J].Cement&Concrete,1983,435:30-37.(in Japanese)
[12]朱安民.混凝土碳化与钢筋混凝土耐久性[J].混凝土,1992(6):18-22.ZHU Anmin.Carbonation of Concrete and Durability ofReinforced Concrete[J].Concrete,1992(6):18-22.(inChinese)
[13]许丽萍,黄士元.预测混凝土中碳化深度的数学模型[J].上海建材学院学报,1991,4(4):347-357.XU Liping,HUANG Shiyuan.The Mathematical Modelof Reinforced Carbonation Depth in Concrete[J].Journalof Shanghai Institute of Building Materials,1991,4(4):347-357.(in Chinese)
[14]龚洛书,苏曼青,王洪琳.混凝土多系数碳化方程的试验研究[J].建筑科学,1985(5):21-26.GONG Luoshu,SU Manqing,WANG Honglin.Experi-ment Study on Multi-Coefficient Carbonated equation[J].Science of Building,1985(5):21-26.(in Chinese)
[15]Smolczyk H G.Testing of Concrete[C]∥Tokyo:Pro-ceeding of 5th International Symposium on Chemistry ofCement,1968:343-368.
[16]Lesahe-de-Frontenay C.Deterioration and Repair[M].Ⅵed.Bahrain:Bahrain Proc.,1995.
[17]牛荻涛.混凝土结构耐久性与寿命预测[M].北京:科学出版社,2003.NIU Ditao.Durability and Life Prediction of ConcreteStructures[M].Beijing:Science Press,2003.(in Chi-nese)
[18]Larrard F d.Concrete Mixture Proportioning:A Scientif-ic Approach[M].Modern Concrete,New York:Rout-ledge,1999.
[19]Papadakis V G,Vayenas C G,Fardis M N.Physical andChemical Characteristics Affecting the Durability of Con-crete[J].ACI Materials Journal,1991,88(5):186-196.
[20]Al-Khaiat H,Haque M N.Strength and Durability ofLightweight and Normal Weight Concrete[J].Journal ofMaterials in Civil Engineering,1999,11(3):231-235.
[21]Haque M N,Al-Khaiat Kayali O.Long-Term Strengthand Durability Parameters of Lightweight Concrete in HotRegime:Importance of Initial Curing[J].Building andEnvironment,2007,42:3086-3092.
[22]东南大学,天津大学,同济大学,等.混凝土结构[M].北京:中国建筑工业出版社,2001.Dongnan University,Tianjin University,Tongji Univer-sity,et al.Concrete Structure[M].Beijing:China Archi-tecture&Building Press,2001.(in Chinese)
[23]包琦玮.北京地区钢筋混凝土桥梁耐久性研究[D].北京:北京工业大学,2003.BAO Qiwei.Study on Durability of Reinforced Bridge inBeijing[D].Beijing:Beijing University of Technology,2003.(in Chinese)
[24]张恺.钢筋混凝土桥梁耐久性的初步探讨[D].北京:北京工业大学,2002.ZHANG Kai.Study on Durability of Reinforced Bridge[D].Beijing:Beijing University of Technology,2002.(in Chinese)
[25]蒋清野,王洪深,路新瀛.混凝土碳化数据库混凝土碳化分析[R].攀登计划-钢筋锈蚀与混凝土冻融破坏的预测模型,1997.JIANG Qingye,WANG Hongshen,LU Xinying.Database and Analysis of Concrete Carbonation[R].Climbing Plan:Prediction Model on Steel Corrosion andFreeze-Thaw of Concrete,1997.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心