钢-连续纤维复合筋(SFCB)增强混凝土柱抗震性能初探
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摘要
为验证具有稳定二次刚度的钢-连续纤维复合筋(SFCB)增强混凝土柱在地震作用下有较小的残余变形和良好的可修复性,本文首先基于纤维截面模型,利用有限元软件OpenSees对SFCB增强的混凝土柱在往复荷载下的受力性能进行了数值模拟,然后介绍了SFCB增强混凝土柱在低周反复荷载作用下的部分试验结果,通过计算值与试验结果的比较,两者吻合良好,且都证明了SFCB增强混凝土柱具有明显而稳定的二次刚度和屈服后残余变形小的特性。最后通过对SFCB增强混凝土柱与普通RC柱的非线性动力时程分析进一步表明,在罕遇地震作用下,SFCB增强混凝土柱具有残余变形小,可修复性强的抗震性能。
The concrete column reinforced by steel fiber composite bar(SFCB) is expected to possess a post-seismic performance of small residual deformation and good recoverability.To study its seismic performance,a numerical simulation based on fiber-section model of SFCB reinforced column under horizontal cyclic loading is conducted with the finite element software OpenSees.Then the numerical result is verified with part of the pseudo-static test result of the SFCB reinforced concrete columns,and show in a good agreement with the experimental results.Both the numerical result and experimental result show a characteristics of obvious and stable post-yield stiffness,small residual deformation.Finally a further study with dynamic time history analysis of the columns shows that the SFCB reinforced columns exhibit post-seismic performance of small residual deformation and good recoverability under rare earthquake.
The concrete column reinforced by steel fiber composite bar(SFCB) is expected to possess a post-seismic performance of small residual deformation and good recoverability.To study its seismic performance,a numerical simulation based on fiber-section model of SFCB reinforced column under horizontal cyclic loading is conducted with the finite element software OpenSees.Then the numerical result is verified with part of the pseudo-static test result of the SFCB reinforced concrete columns,and show in a good agreement with the experimental results.Both the numerical result and experimental result show a characteristics of obvious and stable post-yield stiffness,small residual deformation.Finally a further study with dynamic time history analysis of the columns shows that the SFCB reinforced columns exhibit post-seismic performance of small residual deformation and good recoverability under rare earthquake.
引文
[1]Christopoulos C,Pampanin S.Towards performance-basedSeismic Design of MDOF Structures with ExplicitConsideration of Residual Deformations[J].ISET Journal,2004;41(1):53~73
[2]Christopoulos C,Pampanin S,et al.Performance-basedSeismic Response of Frame Structures Including ResidualDeformations,PartⅠ:Single-Degree-of-Freedom Systems[J].Journal of Earthquake Engineering,2003
[3]Junichi S,Stephen M.Analytical Investigations of NewMethods for Reducing Residual Displacements of ReinforcedConcrete Bridge Columns[P].Pacific EarthquakeEngineering Reseatch Center,Aug.2004
[4]Kawashima K,MacRae G A,Hoshikuma J,Nagaya K.Residual displacement response spectrum[J].Journal ofStructural Engineering(ASCE),1998;124(5):523~530
[5]Iemura H,Takahashi Y,Sogabe N.The Load-displacementRelationship of RC Pier with Splitting Bond High StrengthBars[P].Japan Society of Civil Engineers(JSCE),2004,No.771:59~72(in Japanese)
[6]Iemura H,Takahashi Y,Sogabe N.Innovation of High-perfromence RC Structure with Unbonded Bars for StrongEarthquankes[P].Japan Society of Civil Engineers(JSCE),2002,No.710:283~296.(in Japanese)
[7]Christopoulos C,Pampanin S,et al.Performance-basedSeismic Response of Frame Struct-ures Including ResidualDeformations,PartⅡ:Multi-Degree-of-Freedom Systems[J].Journal of Earthquake Engineering,2003
[8]叶列平,U.Q.Asad,马千里,陆新征.高强钢筋对框架结构抗震破坏机制和性能控制的研究[J].工程抗震与加固改造,2006,28(1)Ye Lie-ping,Asad U Q,Ma Qian-li,Lu Xin-zheng.Study onFailure Mechanism and Seismic Performance of Passive ControlRC Frame against Earthquake[J].Earthquake ResistantEngineering and Retrofitting,2006,28(1)(in Chinese)
[9]马千里,程光煜,叶列平,陆新征.结构屈服后刚度对地震响应离散性影响的研究[J].防灾减灾工程学报,27(sup.),2007,158~162Ma Qian-li,Cheng Guang-yu,Ye Lie-ping,Lu Xin-zheng.Parametric Study of Structural Stiffness after Yielding on InelasticSeismic Response for Multi-Degree of Freedom Structural Systems[J].Journal of Disaster Prevention and Mitigation Engineering,27(sup.),2007,158~162(in Chinese).
[10]谢旭,布占宇.应用碳纤维筋控制桥墩地震损伤方法初探[J].浙江大学学报(工学版),2006;39(10):1589~1594Xie xu,Bu Zhan-yu.Elementary study on usefulness ofcarbon fiber for controlling bridge pier seismic damage[J].Journal of Zhejiang University(Engineering Science),2006;39(10):1589~1594(in Chinese)
[11]吴智深,吴刚,吕志涛.具有稳定二次刚度的钢-连续纤维复合筋混凝土抗震结构[P].国家发明专利(公开号CN1936206)Wu Zhi-shen,Wu Gang,Lv Zhi-tao.Stable SecondaryStiffness Steel-Fiber Composite Bars Reinforced ConcreteSeismic Structure[P].National Patent,CN1936206.(inChinese)
[12]罗云标.钢-连续纤维复合筋及其增强混凝土结构性能研究[D].南京:东南大学硕士学位论文,2008Luo Yun-biao.Performance Study on Steel Fibre CompositeBars and Its Strengthened Concrete Structure[D].Nanjing:Southeast University,2008.(in Chinese)
[13]吴刚,罗云标,吴智深,胡显奇,张敏.钢-连续纤维复合筋(SFCB)单向拉伸力学性能试验研究[J].工程抗震与加固改造,2009,31(1):1~7Luo Yun-biao,Wu Gang,Wu Zhi-shen,et al.Experimental Study on Mechanics Properties of Steel FiberComposite Bar(SFCB)Under Uniaxial Load[J].EarthquakeResistant Engineering and Retrofitting,,2009,31(1):1~7(in Chinese)
[2]Christopoulos C,Pampanin S,et al.Performance-basedSeismic Response of Frame Structures Including ResidualDeformations,PartⅠ:Single-Degree-of-Freedom Systems[J].Journal of Earthquake Engineering,2003
[3]Junichi S,Stephen M.Analytical Investigations of NewMethods for Reducing Residual Displacements of ReinforcedConcrete Bridge Columns[P].Pacific EarthquakeEngineering Reseatch Center,Aug.2004
[4]Kawashima K,MacRae G A,Hoshikuma J,Nagaya K.Residual displacement response spectrum[J].Journal ofStructural Engineering(ASCE),1998;124(5):523~530
[5]Iemura H,Takahashi Y,Sogabe N.The Load-displacementRelationship of RC Pier with Splitting Bond High StrengthBars[P].Japan Society of Civil Engineers(JSCE),2004,No.771:59~72(in Japanese)
[6]Iemura H,Takahashi Y,Sogabe N.Innovation of High-perfromence RC Structure with Unbonded Bars for StrongEarthquankes[P].Japan Society of Civil Engineers(JSCE),2002,No.710:283~296.(in Japanese)
[7]Christopoulos C,Pampanin S,et al.Performance-basedSeismic Response of Frame Struct-ures Including ResidualDeformations,PartⅡ:Multi-Degree-of-Freedom Systems[J].Journal of Earthquake Engineering,2003
[8]叶列平,U.Q.Asad,马千里,陆新征.高强钢筋对框架结构抗震破坏机制和性能控制的研究[J].工程抗震与加固改造,2006,28(1)Ye Lie-ping,Asad U Q,Ma Qian-li,Lu Xin-zheng.Study onFailure Mechanism and Seismic Performance of Passive ControlRC Frame against Earthquake[J].Earthquake ResistantEngineering and Retrofitting,2006,28(1)(in Chinese)
[9]马千里,程光煜,叶列平,陆新征.结构屈服后刚度对地震响应离散性影响的研究[J].防灾减灾工程学报,27(sup.),2007,158~162Ma Qian-li,Cheng Guang-yu,Ye Lie-ping,Lu Xin-zheng.Parametric Study of Structural Stiffness after Yielding on InelasticSeismic Response for Multi-Degree of Freedom Structural Systems[J].Journal of Disaster Prevention and Mitigation Engineering,27(sup.),2007,158~162(in Chinese).
[10]谢旭,布占宇.应用碳纤维筋控制桥墩地震损伤方法初探[J].浙江大学学报(工学版),2006;39(10):1589~1594Xie xu,Bu Zhan-yu.Elementary study on usefulness ofcarbon fiber for controlling bridge pier seismic damage[J].Journal of Zhejiang University(Engineering Science),2006;39(10):1589~1594(in Chinese)
[11]吴智深,吴刚,吕志涛.具有稳定二次刚度的钢-连续纤维复合筋混凝土抗震结构[P].国家发明专利(公开号CN1936206)Wu Zhi-shen,Wu Gang,Lv Zhi-tao.Stable SecondaryStiffness Steel-Fiber Composite Bars Reinforced ConcreteSeismic Structure[P].National Patent,CN1936206.(inChinese)
[12]罗云标.钢-连续纤维复合筋及其增强混凝土结构性能研究[D].南京:东南大学硕士学位论文,2008Luo Yun-biao.Performance Study on Steel Fibre CompositeBars and Its Strengthened Concrete Structure[D].Nanjing:Southeast University,2008.(in Chinese)
[13]吴刚,罗云标,吴智深,胡显奇,张敏.钢-连续纤维复合筋(SFCB)单向拉伸力学性能试验研究[J].工程抗震与加固改造,2009,31(1):1~7Luo Yun-biao,Wu Gang,Wu Zhi-shen,et al.Experimental Study on Mechanics Properties of Steel FiberComposite Bar(SFCB)Under Uniaxial Load[J].EarthquakeResistant Engineering and Retrofitting,,2009,31(1):1~7(in Chinese)
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