近场地震作用下锈蚀钢筋混凝土桥墩的IDA分析
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摘要
利用锈蚀钢筋混凝土柱的滞回试验结果,验证钢筋混凝土构件中锈蚀模型的正确性;利用钢筋混凝土框架的振动台试验结果,验证用OPENSEES程序进行钢筋混凝土结构非线性动力分析的可行性.在此基础上,从PEER地震数据库中选取了30条地震记录,采用OPENSEES建立弹塑性有限元动力分析模型,对钢筋锈蚀的钢筋混凝土桥墩在远场地震、近场非脉冲地震和近场脉冲地震作用下的性能进行非线性时程分析,研究桥墩柱在三类地震作用下的反应,以及钢筋锈蚀对结构地震响应的影响.针对近场脉冲地震对结构进行增量动力分析(Incremental dynamic analysis,IDA),得到结构的IDA曲线和近场地震作用下钢筋锈蚀对结构抗震性能的影响.分析结果表明,在考虑钢筋锈蚀因素时,近场脉冲地震对结构抗震性能影响最为显著,在结构抗震设计中应引起注意.
Using the hysteresis test results of corroded reinforced concrete columns,the accuracy of the model of corroded steel in reinforced concrete structures was validated.The feasibility of OPENSEES program for the nonlinear dynamic analysis of reinforced concrete structure was verified with the shakingtable test results of reinforced concrete frame.With the program and 30 seismic ground motions selected from the PEER database,a dynamic elastic-plastic finite element model was built.And then,the seismic performance of a corroded reinforced concrete bridge column subjected to far-field earthquake,near-field earthquake with or without impulse action was measured by the nonlinear dynamic time-history analysis in order to study the steel corrosion effect on the structural response under three types of earthquake ground motions.Aiming at the near-field earthquake with impulse action,the Incremental Dynamic Analysis(IDA)was carried out,the IDA curves and the influence of steel corrosion on the seismic performance of the bridge columns were obtained.The results show that near-field earthquake with pulse action has the most significant effect on the structural seismic performance when considering the corrosion,and special attention should be paid to that during structural seismic design.
Using the hysteresis test results of corroded reinforced concrete columns,the accuracy of the model of corroded steel in reinforced concrete structures was validated.The feasibility of OPENSEES program for the nonlinear dynamic analysis of reinforced concrete structure was verified with the shakingtable test results of reinforced concrete frame.With the program and 30 seismic ground motions selected from the PEER database,a dynamic elastic-plastic finite element model was built.And then,the seismic performance of a corroded reinforced concrete bridge column subjected to far-field earthquake,near-field earthquake with or without impulse action was measured by the nonlinear dynamic time-history analysis in order to study the steel corrosion effect on the structural response under three types of earthquake ground motions.Aiming at the near-field earthquake with impulse action,the Incremental Dynamic Analysis(IDA)was carried out,the IDA curves and the influence of steel corrosion on the seismic performance of the bridge columns were obtained.The results show that near-field earthquake with pulse action has the most significant effect on the structural seismic performance when considering the corrosion,and special attention should be paid to that during structural seismic design.
引文
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[17]司炳君,李宏男,王东升,等.基于位移设计的钢筋混凝土桥墩抗震性能试验研究(I):拟静力试验[J].地震工程与工程振动,2008,28(1):123-129.SI Bing-jun,LI Hong-nan,WANG Dong-sheng,et al.Experimental evaluation of the seismic performance of reinforced concrete bridge piers designed on the basis of displacement(I):Quasi-static test[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(1):123-129.(In Chinese)
[18]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001:265-290.FAN Li-chu,ZHUO Wei-dong.Seismic design of bridge ductility[M].Beijing:China Communications Press,2001:265-290.(In Chinese)
[19]LOH C H,WAN S,LIAO W I.Effects of hysteretic model on seismic demands:consideration of near-fault ground motions[J].The Structural Design of Tall Buildings,2002,11(3):155-169.
[20]陈亮.地震动的频谱变异性对桥墩地震反应的影响研究[J].土木工程学报,2013,46(S2):237-241.CHEN Liang.Effects of the variability of response spectra of strong ground motions on seismic response of bridge columns[J].China Civil Engineering Journal,2013,46(S2):237-241.(In Chinese)
[21]VAMVATSIKOS D,CORNELL C A.Incremental dynamic analysis[J].Earthquake Engineering and Structural Dynamics,2002,31:491-514.
[2]王媛俐,姚燕.北京西直门旧桥混凝土破坏原因分析[M]//重点工程混凝土耐久性的研究与工程应用.北京:中国建筑工业出版社,2001:5-11.WANG Yuan-li,YAO Yan.Analysis of the reason for Beijing Xizhimen bridge concrete failure[M]//Durability Research and Engineering Application on Key Project Concrete.Beijing:China Architecture&Building Press,2001:5-11.(In Chinese)
[3]汪梦甫,汪帜辉,唐毅.近场脉冲型地震对结构非弹性位移比谱的影响[J].湖南大学学报:自然科学版,2014,41(6):9-15.WANG Meng-fu,WANG Zhi-hui,TANG Yi.Influence of near-fault pulse-type ground motions on inelastic displacement ratio spectra[J].Journal of Hunan University:Natural Sciences,2014,41(6):9-15.(In Chinese)
[4]LEE H S,KAGE T,NOGUCHI T,et al.An experimental study on the retrofit ting effects of reinforced concrete columns damaged by rebar corrosion strengthened with carbon fiber sheets[J].Cement and Concrete Research,2003,33(4):563-570.
[5]RODRIGUEZ J,ORTEGA L M,CASAL J.Load carrying capacity of concrete structures with corroded reinforcement[J].Construction and Building Materials,1997,11(4):239-248.
[6]史庆轩,牛荻涛,颜桂云.反复荷载作用下锈蚀钢筋混凝土压弯构件恢复力性能的试验研究[J].地震工程与工程振动,2000,20(4):44-50.SHI Qing-xuan,NIU Di-tao,YAN Gui-yun.Experimental research on hysteretic characteristics of corroded RC members with flexural and compressive axial loads under repeated horizontal loading[J].Earthquake Engineering and Engineering Vibration,2000,20(4):44-50.(In Chinese)
[7]MA Yin,CHI Yi,GONG Jin-xin.Behavior of corrosion damaged circular reinforced concrete columns under cyclic loading[J].Construction and Building Materials,2012,29:548-556.
[8]TUUTTI K.Corrosion of steel in concrete[R].Stockholm:Swedish Cement and Concrete Research Institute,1982:469.
[9]CAIRNS J,PLIZZARI G A,DU Y G,et al.Mechanical properties of corrosion-damaged reinforcement[J].ACI Materials Journal,2005,102(4):256-264.
[10]DU Y G,CLARK L A,CHAN A H C.Residual capacity of corroded reinforcing bars[J].Magazine of Concrete Research,2005,57(3):135-147.
[11]MAZZOUNI S,MCKENNA F,SCOTT M H.Open system for earthquake engineering simulation user command language manual[R].Berkeley:Earthquake Engineering Research Center,University of California,2005:11-426.
[12]YASSIN M H M.Nonlinear analysis of prestressed concrete structures under monotonic and cycling loads[D].Berkeley:University of California,1994:127-154.
[13]FILIPPOU F C,POPOV E P,BERTERO V V.Effects of bond deterioration on hysteretic behavior of reinforced concrete joints[R].Berkeley:Earthquake Engineering Research Center,University of California,1983:93-112.
[14]MANDER J B,PRIESTLEY M J N,PARK R.Theoretical stress-strain model for confined concrete[J].Journal of Structural Engineering,ASCE,1988,114(8):1804-1826.
[15]ZHAO J,SRITHARAN S.Modeling of strain penetration effects in fiber-based analysis of reinforced concrete structures[J].ACI Structural Journal,2007,104(2):133-141.
[16]ELWOODL K J,MOEHLE J P.Dynamic shear and axial-load failure of reinforced concrete columns[J].Journal of Structural Engineering,ASCE,2008,134(7):1189-1198.
[17]司炳君,李宏男,王东升,等.基于位移设计的钢筋混凝土桥墩抗震性能试验研究(I):拟静力试验[J].地震工程与工程振动,2008,28(1):123-129.SI Bing-jun,LI Hong-nan,WANG Dong-sheng,et al.Experimental evaluation of the seismic performance of reinforced concrete bridge piers designed on the basis of displacement(I):Quasi-static test[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(1):123-129.(In Chinese)
[18]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001:265-290.FAN Li-chu,ZHUO Wei-dong.Seismic design of bridge ductility[M].Beijing:China Communications Press,2001:265-290.(In Chinese)
[19]LOH C H,WAN S,LIAO W I.Effects of hysteretic model on seismic demands:consideration of near-fault ground motions[J].The Structural Design of Tall Buildings,2002,11(3):155-169.
[20]陈亮.地震动的频谱变异性对桥墩地震反应的影响研究[J].土木工程学报,2013,46(S2):237-241.CHEN Liang.Effects of the variability of response spectra of strong ground motions on seismic response of bridge columns[J].China Civil Engineering Journal,2013,46(S2):237-241.(In Chinese)
[21]VAMVATSIKOS D,CORNELL C A.Incremental dynamic analysis[J].Earthquake Engineering and Structural Dynamics,2002,31:491-514.
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