锈蚀钢筋混凝土梁的抗剪承载力分析模型
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摘要
锈蚀钢筋混凝土梁的传统抗剪承载力模型大多属于经验模型,考虑的影响因素不全面且缺乏严密的理论推导,导致计算精度有限。基于修正压力场理论,建立了可以综合考虑钢筋锈蚀对临界斜裂缝倾角、梁有效抗剪截面积、配筋率、配箍率等关键因素影响的锈蚀钢筋混凝土梁的抗剪承载力模型,通过与85组试验数据和现有模型的对比分析,验证了模型的适用性和计算精度。结果表明,该模型具有严密的理论基础,考虑的影响因素全面,计算精度较高、离散性较小。
The accuracy of traditional shear strength models for corroded reinforced concrete(RC)beam are far from satisfactory,since these models generally belong to the empirical methods which are lack of theoretical basis and do not take into account the various influential factors comprehensively.Hence,a shear strength model of corroded RC beam which takes into account the influences of corrosion on key factors including the critical diagonal crack angle,the effective shear cross-sectional area,the reinforcement ratio and the stirrup ratio was established based on the modified compression field theory(MCFT).The accuracy of the proposed model was validated by comparing with 85 sets of experimental data and several existing models.Analysis results show that the proposed model is of good accuracy and small discreteness.
The accuracy of traditional shear strength models for corroded reinforced concrete(RC)beam are far from satisfactory,since these models generally belong to the empirical methods which are lack of theoretical basis and do not take into account the various influential factors comprehensively.Hence,a shear strength model of corroded RC beam which takes into account the influences of corrosion on key factors including the critical diagonal crack angle,the effective shear cross-sectional area,the reinforcement ratio and the stirrup ratio was established based on the modified compression field theory(MCFT).The accuracy of the proposed model was validated by comparing with 85 sets of experimental data and several existing models.Analysis results show that the proposed model is of good accuracy and small discreteness.
引文
[1]董卫,苏志敏,杨华舒,等.箍筋锈蚀对钢筋混凝土梁承载机理影响的试验研究[J].建筑结构,2016,46(6):86-90.DONG W,SU Z M,YANG H S,et al Experimental study on stirrup corrosion effect on the bearing mechanism of reinforced concrete beams[J].Building Structure,2016,46(6):86-90.(in Chinese)
[2]张梦光,陈月顺,曾妮,等.锈蚀箍筋混凝土梁抗剪性能试验研究[J].湖北工业大学学学报,2016,31(5):101-103.ZHANG M G,CHEN Y S,ZENG N,et al.Test study on shearing capacity of concrete beanms with corroded stirrups[J].Jouranl of Hubei University of Technology,2016,31(5):101-103.(in Chinese)
[3]霍艳华.锈蚀钢筋混凝土简支梁受剪承载力研究[J].工业建筑,2006,36(Sup1):910-912.HUO Y H.Research on shear capacity of simply supported concrete beam with corroded reinforcement[J].Industrial Construction,2006,36(Sup1):910-912.(in Chinese)
[4]赵羽习,金伟良.锈蚀箍筋混凝土梁的抗剪承载力分析[J].浙江大学学报,2008,42(1):19-24.ZHAO Y X,JIN W L.Analysis on shearing capacity of concrete beams with corroded stirrups[J].Journal of Zhejiang University,2008,42(1):19-24.(in Chinese)
[5]李士彬,张鑫,贾留东,等.箍筋锈蚀钢筋混凝土梁的抗剪承载力分析[J].工程力学,2011,28(Sup1):60-63.LI S B,ZHANG X,JIA L D,et al.Analysis for shear capacity of reinforced concrete beams with corrosion stirrups[J].Engineering Mechanic,2011,28(Sup1):60-63.(in Chinese)
[6]余璠璟.锈蚀钢筋混凝土梁斜截面性能试验研究和分析[D].南京:河海大学,2005.YU F J.Experiment study and analysis on the diagonal shear property of corroded reinforced concrete beam[D].Nanjing:Hohai University,2005.(in Chinese)
[7]EL-SAYED A K.Shear capacity assessment of reinforced concrete beams with corroded stirrups[J].Construction&Building Materials,2017,134:176-184.
[8]卢朝辉,李海,赵衍刚,等.锈蚀钢筋混凝土梁抗剪承载力预测经验模型[J].工程力学,2015,32(Sup1):261-270.LU Z H,LI H,ZHAO Y G,et al.An empirical model for shear strength prediction of corroded RC beams[J].Engineering Mechanics,2015,32(Sup1):261-270.(in Chinese)
[9]COLLINS M P,MITCHELL D.Prestressed concrete structures[M].Prentice Hall Englewood Cliffs,New Jersey,1991.
[10]BENTZ E C,COLLINS M P.Development of the 2004Canadian Standards Association(CSA)A23.3 Shear provisions for reinforced concrete[J].Canadian Journal of Civil Engineering,2006,33(5):521-534.
[11]BENTZ E C,VECCHIO F J,COLLINS M P.Simplified modified compression field theory for calculating shear strength of reinforced concrete elements[J].ACI Structural Journal,2006,103(4):614-624.
[12]惠云玲,林志伸.锈蚀钢筋性能试验研究分析[J].工业建筑,1997,27(6):10-13.HUI Y L,LIN Z S,LI R.Experimental study and analysis on the property of corroded rebar[J].Industrial Construction,1997,27(6):10-13.(in Chinese)
[13]DE SILVA S,MUTSUYOSHI H,WITCHUKREANGKRAI E.Evaluation of shear crack width in I-shaped prestressed reinforced concrete beams[J].Journal of Advanced Concrete Technology,2008,6(3):443-458.
[14]余波,陈冰,唐睿楷,等.钢筋混凝土梁临界斜裂缝倾角计算的概率模型[J].计算力学学报,2018,35(1):98-104.YU B,CHEN B,TANG R K,et al.Probabilistic model for critical crack angle of reinforced concrete beams[J].Chinese Journal of Computational Mechanics,2018,35(1):98-104.(in Chinese)
[15]HIGGINSC W C,FARROW W C.Shear capacity assessment of corrosion-damaged reinforced concrete beams,Final Report SPR 326[R].Washington,DC,2003.
[16]ANDRADE C,ALONSO C.On-site measurements of corrosion rate of reinforcements[J].Construction and Building Materials,2001,15:141-145.
[17]ANDRADE C,ALONSO C.Test methods for on-site corrosion rate measurement of steel reinforcement in concrete by means of the polarization resistance method[J].Materials&Structures,2004,37:623-643.
[18]YU B,YANG L F,WU M,et al.Practical model for predicting corrosion rate of steel reinforcement in concrete structures[J].Construction and Building Materials,2014,54(1):385-401.
[19]GONZALEZ J A,ANDRADE C,ALONSO C,et al.Comparison of rates of general corrosion and maximum pitting penetration on concrete embedded steel reinforcement[J].Cement and Concrete Research,1995,25:257-264.
[20]VAL D V.Deterioration of strength of RC beams due to corrosion and its influence on beam reliability[J].Journal of Structural Engineering,2007,133(9):1297-1306.
[21]RODRIGUEZ J,ORTEGAL M,CASAL J.Load carrying capacity of concrete structures with corroded reinforcement[J].Construction&Building Materials,1997,11(4):239-248.
[22]XIA J,JIN W L,LI L Y.Shear performance of reinforced concrete beams with corroded stirrups in chloride environment[J].Corrosion Science,2011,53(5):1794-1805.
[23]李学田,殷惠光.锈蚀钢筋混凝土梁抗剪能力退化机理和预计模型[J].徐州工程学院学报,2010,25(4):58-63.LI X T,YIN H G.Degradation mechanism and predicting models of shearing capacity for corroded reinforced concrete beams[J].Journal of Xuzhou Institute of Technology,2010,25(4):58-63.(in Chinese)
[24]徐善华,牛荻涛.锈蚀钢筋混凝土简支梁斜截面抗剪性能研究[J].建筑结构学报,2004,25(5):98-104.XU S H,NIU D T.The shear behaxior of corroded simply supported reinforced concrete beam[J].Journal of Building Structures,2004,25(5):98-104.(in Chinese)
[25]霍艳华.锈蚀钢筋混凝土简支梁受剪承载力研究[D].南昌:南昌大学,2007.HUO Y H.Research on shear capacity of simply supported concrete beam with corroded reinforcement[D].Nanchang:Nanchang University,2007.(in Chinese)
[26]FARROW W C.Tests of reinforced concrete beams with corrosion-damaged stirrups[J].ACI Structural Journal,2006,103(1):133-141.
[27]赵冰,曾凡振.锈蚀箍筋混凝土简支梁抗剪承载力模型及有限元分析[J].中国农村水利水电,2010(10):88-91.ZHAO B,ZENG F Z.The model and finite element analysis of shear capacity of simply supported concrete beam with corroded stirrup[J].China Rural Water and Hydropower,2010(10):88-91.(in Chinese)
[28]李冰.局部区段锈蚀的钢筋混凝土梁抗剪承载力试验研究[D].上海:上海交通大学,2011.LI B.Experimental study on the shera capacity of reinforced concrete beam with partial length corrosion[D].Shanghai:Shanghai Jiao Tong University,2011.(in Chinese)
[29]柳世涛.受腐蚀钢筋混凝土抗剪性能研究[D].长沙:中南大学,2013.LIU S T.Research on shear behavior of corroded RCbeams[D].Changsha:Central South University,2013.(in Chinese)
[2]张梦光,陈月顺,曾妮,等.锈蚀箍筋混凝土梁抗剪性能试验研究[J].湖北工业大学学学报,2016,31(5):101-103.ZHANG M G,CHEN Y S,ZENG N,et al.Test study on shearing capacity of concrete beanms with corroded stirrups[J].Jouranl of Hubei University of Technology,2016,31(5):101-103.(in Chinese)
[3]霍艳华.锈蚀钢筋混凝土简支梁受剪承载力研究[J].工业建筑,2006,36(Sup1):910-912.HUO Y H.Research on shear capacity of simply supported concrete beam with corroded reinforcement[J].Industrial Construction,2006,36(Sup1):910-912.(in Chinese)
[4]赵羽习,金伟良.锈蚀箍筋混凝土梁的抗剪承载力分析[J].浙江大学学报,2008,42(1):19-24.ZHAO Y X,JIN W L.Analysis on shearing capacity of concrete beams with corroded stirrups[J].Journal of Zhejiang University,2008,42(1):19-24.(in Chinese)
[5]李士彬,张鑫,贾留东,等.箍筋锈蚀钢筋混凝土梁的抗剪承载力分析[J].工程力学,2011,28(Sup1):60-63.LI S B,ZHANG X,JIA L D,et al.Analysis for shear capacity of reinforced concrete beams with corrosion stirrups[J].Engineering Mechanic,2011,28(Sup1):60-63.(in Chinese)
[6]余璠璟.锈蚀钢筋混凝土梁斜截面性能试验研究和分析[D].南京:河海大学,2005.YU F J.Experiment study and analysis on the diagonal shear property of corroded reinforced concrete beam[D].Nanjing:Hohai University,2005.(in Chinese)
[7]EL-SAYED A K.Shear capacity assessment of reinforced concrete beams with corroded stirrups[J].Construction&Building Materials,2017,134:176-184.
[8]卢朝辉,李海,赵衍刚,等.锈蚀钢筋混凝土梁抗剪承载力预测经验模型[J].工程力学,2015,32(Sup1):261-270.LU Z H,LI H,ZHAO Y G,et al.An empirical model for shear strength prediction of corroded RC beams[J].Engineering Mechanics,2015,32(Sup1):261-270.(in Chinese)
[9]COLLINS M P,MITCHELL D.Prestressed concrete structures[M].Prentice Hall Englewood Cliffs,New Jersey,1991.
[10]BENTZ E C,COLLINS M P.Development of the 2004Canadian Standards Association(CSA)A23.3 Shear provisions for reinforced concrete[J].Canadian Journal of Civil Engineering,2006,33(5):521-534.
[11]BENTZ E C,VECCHIO F J,COLLINS M P.Simplified modified compression field theory for calculating shear strength of reinforced concrete elements[J].ACI Structural Journal,2006,103(4):614-624.
[12]惠云玲,林志伸.锈蚀钢筋性能试验研究分析[J].工业建筑,1997,27(6):10-13.HUI Y L,LIN Z S,LI R.Experimental study and analysis on the property of corroded rebar[J].Industrial Construction,1997,27(6):10-13.(in Chinese)
[13]DE SILVA S,MUTSUYOSHI H,WITCHUKREANGKRAI E.Evaluation of shear crack width in I-shaped prestressed reinforced concrete beams[J].Journal of Advanced Concrete Technology,2008,6(3):443-458.
[14]余波,陈冰,唐睿楷,等.钢筋混凝土梁临界斜裂缝倾角计算的概率模型[J].计算力学学报,2018,35(1):98-104.YU B,CHEN B,TANG R K,et al.Probabilistic model for critical crack angle of reinforced concrete beams[J].Chinese Journal of Computational Mechanics,2018,35(1):98-104.(in Chinese)
[15]HIGGINSC W C,FARROW W C.Shear capacity assessment of corrosion-damaged reinforced concrete beams,Final Report SPR 326[R].Washington,DC,2003.
[16]ANDRADE C,ALONSO C.On-site measurements of corrosion rate of reinforcements[J].Construction and Building Materials,2001,15:141-145.
[17]ANDRADE C,ALONSO C.Test methods for on-site corrosion rate measurement of steel reinforcement in concrete by means of the polarization resistance method[J].Materials&Structures,2004,37:623-643.
[18]YU B,YANG L F,WU M,et al.Practical model for predicting corrosion rate of steel reinforcement in concrete structures[J].Construction and Building Materials,2014,54(1):385-401.
[19]GONZALEZ J A,ANDRADE C,ALONSO C,et al.Comparison of rates of general corrosion and maximum pitting penetration on concrete embedded steel reinforcement[J].Cement and Concrete Research,1995,25:257-264.
[20]VAL D V.Deterioration of strength of RC beams due to corrosion and its influence on beam reliability[J].Journal of Structural Engineering,2007,133(9):1297-1306.
[21]RODRIGUEZ J,ORTEGAL M,CASAL J.Load carrying capacity of concrete structures with corroded reinforcement[J].Construction&Building Materials,1997,11(4):239-248.
[22]XIA J,JIN W L,LI L Y.Shear performance of reinforced concrete beams with corroded stirrups in chloride environment[J].Corrosion Science,2011,53(5):1794-1805.
[23]李学田,殷惠光.锈蚀钢筋混凝土梁抗剪能力退化机理和预计模型[J].徐州工程学院学报,2010,25(4):58-63.LI X T,YIN H G.Degradation mechanism and predicting models of shearing capacity for corroded reinforced concrete beams[J].Journal of Xuzhou Institute of Technology,2010,25(4):58-63.(in Chinese)
[24]徐善华,牛荻涛.锈蚀钢筋混凝土简支梁斜截面抗剪性能研究[J].建筑结构学报,2004,25(5):98-104.XU S H,NIU D T.The shear behaxior of corroded simply supported reinforced concrete beam[J].Journal of Building Structures,2004,25(5):98-104.(in Chinese)
[25]霍艳华.锈蚀钢筋混凝土简支梁受剪承载力研究[D].南昌:南昌大学,2007.HUO Y H.Research on shear capacity of simply supported concrete beam with corroded reinforcement[D].Nanchang:Nanchang University,2007.(in Chinese)
[26]FARROW W C.Tests of reinforced concrete beams with corrosion-damaged stirrups[J].ACI Structural Journal,2006,103(1):133-141.
[27]赵冰,曾凡振.锈蚀箍筋混凝土简支梁抗剪承载力模型及有限元分析[J].中国农村水利水电,2010(10):88-91.ZHAO B,ZENG F Z.The model and finite element analysis of shear capacity of simply supported concrete beam with corroded stirrup[J].China Rural Water and Hydropower,2010(10):88-91.(in Chinese)
[28]李冰.局部区段锈蚀的钢筋混凝土梁抗剪承载力试验研究[D].上海:上海交通大学,2011.LI B.Experimental study on the shera capacity of reinforced concrete beam with partial length corrosion[D].Shanghai:Shanghai Jiao Tong University,2011.(in Chinese)
[29]柳世涛.受腐蚀钢筋混凝土抗剪性能研究[D].长沙:中南大学,2013.LIU S T.Research on shear behavior of corroded RCbeams[D].Changsha:Central South University,2013.(in Chinese)