钢筋混凝土柱低周疲劳力学性能分析
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摘要
在以往12根1/2比例钢筋混凝土柱低周疲劳试验研究基础上,分析了不同位移幅值下弯曲型破坏混凝土柱的累积损伤发展规律,重点研究了钢筋混凝土柱的强度退化、刚度退化、能量耗散等力学性能。研究结果表明:钢筋混凝土柱的低周疲劳破坏过程一般可分为损伤迅速发展、相持及破坏3个阶段;强度退化和刚度退化与构件的损伤过程发展一致,导致其产生的根本原因是构件弹塑性性质及损伤的发展;构件破坏时滞回耗能随加载路径不同而存在显著差异,裂缝的开展和分布状态对构件耗能能力有明显的影响。
Based on existing low-cycle fatigue tests on 12 identical half-scale reinforced concrete columns,the development of cumulative damage of reinforced concrete frame column was investigated.Furthermore,the rigidity deterioration,strength deterioration and energy dissipation of reinforced concrete columns were studied.The results indicate that the failure process of reinforced concrete columns can be divided into three stages:damage rapid development stage,stalemate stage,and failure stage.The stiffness degradation traces and rigidity deterioration traces are accompanied with the failure process.The reason lies in the essential feature of elastic-plastic behavior of member and the development of damage.In addition,the energy dissipation is related to the loading path and is influenced by the crack development and crack distribution of column.
Based on existing low-cycle fatigue tests on 12 identical half-scale reinforced concrete columns,the development of cumulative damage of reinforced concrete frame column was investigated.Furthermore,the rigidity deterioration,strength deterioration and energy dissipation of reinforced concrete columns were studied.The results indicate that the failure process of reinforced concrete columns can be divided into three stages:damage rapid development stage,stalemate stage,and failure stage.The stiffness degradation traces and rigidity deterioration traces are accompanied with the failure process.The reason lies in the essential feature of elastic-plastic behavior of member and the development of damage.In addition,the energy dissipation is related to the loading path and is influenced by the crack development and crack distribution of column.
引文
[1]清华大学、西南交通大学、北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.Civil and Structural Groups of Tsinghua University、Xinan Jiaotong University and Beijing Jiaotong Uni-versity.Analysis on seismic damage of buildings in theWenchuan earthquake[J].Journal of Building Struc-tures,2008,29(4):1-9.(in Chinese)
[2]Otani S R C.Building damage statistics and SDF re-sponse with design seismic forces[J].EarthquakeSpectra,1999,15(3):485-501.
[3]曹海韵,潘鹏,叶列平,等.混凝土框架摇摆墙结构体系的抗震性能分析[J].建筑科学与工程学报,2011,28(1):64-69.CAO Hai-yun,PAN Peng,YE Lie-ping,et al.Seismicperformance analysis of RC frame rocking-wall struc-ture system[J].Journal of Architecture and Civil En-gineering,2011,28(1):64-67.(in Chinese)
[4]刘伯权,白绍良,赖明.抗震结构的破坏准则评述及探讨[J].重庆建筑工程学院学报,1993,15(4):1-8.LIU Bo-quan,BAI Shao-liang,LAI Ming.A reviewand analysis of failure criteria for aseismic structures[J].Journal of Chongqing Jianzhu University,1993,15(4):1-8.(in Chinese)
[5]刘伯权.抗震结构的破坏准则及可靠性分析[M].北京:中国建材工业出版社,1995.LIU Bo-quan.Damage criteria and reliability analysisof earthquake resistant structures[M].Beijing:ChinaBuilding Material Press,1995.(in Chinese)
[6]Banon H,Irvine H M,Biggs J M.Seismic damage inreinforced concrete frames[J].Journal of the Struc-tural Engineering,1981,107(9):1713-1729.
[7]Park Y J,A H S,Wen Y K.Seismic damage analysisof reinforced concrete buildings[J].Journal of theStructural Engineering,1985,111(4):740-757.
[8]陈永祁,龚思礼.结构在地震动时延性和累积塑性耗能的双重破坏准则[J].建筑结构学报,1986,7(1):35-48.CHEN Yong-qi,GONG Si-li.Double control damageindex of structural ductility and dissipated energyduring earthquake[J].Journal of Building Struc-tures,1986,7(1):35-48.(in Chinese)
[9]牛荻涛,任利杰.改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996,16(4):44-54.NIU Di-tao,REN Li-jie.A modified seismic damagemodel with double variables for reinforced concretestructures[J].Earthquake Engineering and Engineer-ing Vibration,1996,16(4):44-54.(in Chinese)
[10]王东升,冯启民,王国新.考虑低周疲劳寿命的改进Park—Ang地震损伤模型[J].土木工程学报,2004,37(11):41-49.WANG Dong-sheng,FENG Qi-min,WANG Guo-xin.A modified park-ang seismic damage model consider-ing low-cycle fatigue life[J].China Civil EngineeringJournal,2004,37(11):41-49.(in Chinese)
[11]刘伯权,徐云中,白绍良.钢筋混凝土柱在等幅对称位移循环加载下的低周疲劳性能[J].重庆建筑大学学报,1996,18(2):34-42.LIU Bo-quan,XU Yun-Zhong,BAI Shao-Liang.Low-cyclic fatigue behavior of reinforced concrete columnsubjected to symmetric displacement cycling[J].Journal of Chongqing Jianzhu University,1996,18(2):34-42.(in Chinese)
[12]刘伯权,黄宗明,张友为,等.非对称位移循环下钢筋混凝土柱的低周疲劳性能[J].重庆建筑大学学报,1996,18(2):92-99.LIU Bo-quan,HUANG Zong-ming,ZHANG You-wei,et al.Low-cyclic fatigue behavior of reinforcedconcrete columns subjected to non-symmetric dis-placement cycling[J].Journal of Chongqing JianzhuUniversity,1996,18(2):92-99.(in Chinese)
[13]Banon H,Venezane D.Seismic safety of reinforced con-crete members and structures[J].Earthquake Engineeringand Structural Dynamics,1982,10(2):179-193.
[2]Otani S R C.Building damage statistics and SDF re-sponse with design seismic forces[J].EarthquakeSpectra,1999,15(3):485-501.
[3]曹海韵,潘鹏,叶列平,等.混凝土框架摇摆墙结构体系的抗震性能分析[J].建筑科学与工程学报,2011,28(1):64-69.CAO Hai-yun,PAN Peng,YE Lie-ping,et al.Seismicperformance analysis of RC frame rocking-wall struc-ture system[J].Journal of Architecture and Civil En-gineering,2011,28(1):64-67.(in Chinese)
[4]刘伯权,白绍良,赖明.抗震结构的破坏准则评述及探讨[J].重庆建筑工程学院学报,1993,15(4):1-8.LIU Bo-quan,BAI Shao-liang,LAI Ming.A reviewand analysis of failure criteria for aseismic structures[J].Journal of Chongqing Jianzhu University,1993,15(4):1-8.(in Chinese)
[5]刘伯权.抗震结构的破坏准则及可靠性分析[M].北京:中国建材工业出版社,1995.LIU Bo-quan.Damage criteria and reliability analysisof earthquake resistant structures[M].Beijing:ChinaBuilding Material Press,1995.(in Chinese)
[6]Banon H,Irvine H M,Biggs J M.Seismic damage inreinforced concrete frames[J].Journal of the Struc-tural Engineering,1981,107(9):1713-1729.
[7]Park Y J,A H S,Wen Y K.Seismic damage analysisof reinforced concrete buildings[J].Journal of theStructural Engineering,1985,111(4):740-757.
[8]陈永祁,龚思礼.结构在地震动时延性和累积塑性耗能的双重破坏准则[J].建筑结构学报,1986,7(1):35-48.CHEN Yong-qi,GONG Si-li.Double control damageindex of structural ductility and dissipated energyduring earthquake[J].Journal of Building Struc-tures,1986,7(1):35-48.(in Chinese)
[9]牛荻涛,任利杰.改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996,16(4):44-54.NIU Di-tao,REN Li-jie.A modified seismic damagemodel with double variables for reinforced concretestructures[J].Earthquake Engineering and Engineer-ing Vibration,1996,16(4):44-54.(in Chinese)
[10]王东升,冯启民,王国新.考虑低周疲劳寿命的改进Park—Ang地震损伤模型[J].土木工程学报,2004,37(11):41-49.WANG Dong-sheng,FENG Qi-min,WANG Guo-xin.A modified park-ang seismic damage model consider-ing low-cycle fatigue life[J].China Civil EngineeringJournal,2004,37(11):41-49.(in Chinese)
[11]刘伯权,徐云中,白绍良.钢筋混凝土柱在等幅对称位移循环加载下的低周疲劳性能[J].重庆建筑大学学报,1996,18(2):34-42.LIU Bo-quan,XU Yun-Zhong,BAI Shao-Liang.Low-cyclic fatigue behavior of reinforced concrete columnsubjected to symmetric displacement cycling[J].Journal of Chongqing Jianzhu University,1996,18(2):34-42.(in Chinese)
[12]刘伯权,黄宗明,张友为,等.非对称位移循环下钢筋混凝土柱的低周疲劳性能[J].重庆建筑大学学报,1996,18(2):92-99.LIU Bo-quan,HUANG Zong-ming,ZHANG You-wei,et al.Low-cyclic fatigue behavior of reinforcedconcrete columns subjected to non-symmetric dis-placement cycling[J].Journal of Chongqing JianzhuUniversity,1996,18(2):92-99.(in Chinese)
[13]Banon H,Venezane D.Seismic safety of reinforced con-crete members and structures[J].Earthquake Engineeringand Structural Dynamics,1982,10(2):179-193.
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