预期损伤部位采用FRC梁柱组合件层间剪力-变形计算模型研究
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摘要
通过分析梁柱组合件层间变形与梁端变形、柱端变形和节点核心区剪切变形之间的关系,梁端、柱端弯矩与曲率之间的三折线关系及节点核心区剪力与柱顶剪力之间的关系,提出预期损伤部位采用纤维增强混凝土(FRC)梁柱组合件层间剪力-变形计算模型;以节点核心区剪切破坏为主要破坏模式,分析FRC梁柱组合件在开裂点、屈服点和峰值点处的层间剪力、梁端变形、柱端变形和节点核心区剪切变形及各部分变形引起的层间变形占层间总变形中的比例及变化规律。将模型计算结果与试验结果进行比较,结果表明:提出的层间剪力-变形理论计算模型可较好地反映FRC梁柱组合件在地震作用下的层间剪力-变形关系。
The deformation relationship between beam-column subassemblages and beam end, column end as well as the joint core zone, the moment-curvature relationship between beam section and column section, and the shear strength relationship between the joint core zone and column top are analyzed; and then the calculation model for inter-story shear strength-deformation of beam-column subassemblages with fiber-reinforced concrete(FRC) in the expected damage location is proposed. Furthermore, taking the shear failure of the joint core zone of FRC beam-column subassemblages as the main failure mode, the paper analyzes the inter-story shear strength,beam deformation, column deformation and joint shear deformation, and investigates the contributions of each deformation to the total inter-story deformation at cracking point, yielding point and peaking point, respectively.Finally, the comparison between calculation results and experimental results shows that the proposed model for the calculation of inter-story shear strength-deformation agrees well with the inter-story shear strength-deformation relationship of FRC beam-column subassemblages under earthquakes.
The deformation relationship between beam-column subassemblages and beam end, column end as well as the joint core zone, the moment-curvature relationship between beam section and column section, and the shear strength relationship between the joint core zone and column top are analyzed; and then the calculation model for inter-story shear strength-deformation of beam-column subassemblages with fiber-reinforced concrete(FRC) in the expected damage location is proposed. Furthermore, taking the shear failure of the joint core zone of FRC beam-column subassemblages as the main failure mode, the paper analyzes the inter-story shear strength,beam deformation, column deformation and joint shear deformation, and investigates the contributions of each deformation to the total inter-story deformation at cracking point, yielding point and peaking point, respectively.Finally, the comparison between calculation results and experimental results shows that the proposed model for the calculation of inter-story shear strength-deformation agrees well with the inter-story shear strength-deformation relationship of FRC beam-column subassemblages under earthquakes.
引文
[1]吕西林,郭子雄,王亚勇.RC框架梁柱组合件抗震性能试验研究[J].建筑结构学报,2001,22(1):2-7.LüXilin,Guo Zixiong,Wang Yayong.Experimental study on seismic behavior of beam-column subassemblages in RC frame[J].Journal of Building Structures,2001,22(1):2-7.(in Chinese)
[2]蒋欢军,吕西林.钢筋混凝土框架结构层间位移角与构件变形关系研究[J].地震工程与工程振动,2009,29(2):66-72.Jiang Huanjun,LüXilin.Study on the relationship between story drift and element deformation for reinforced concrete frames[J].Journal of Earthquake and Engineering Vibration,2009,29(2):66-72.(in Chinese)
[3]Li V C.高延性纤维增强水泥基复合材料的研究进展及应用[J].硅酸盐学报,2007,35(4):531―536.Li V C.Progress and application of engineered cementitious composites[J].Journal of the Chinese Ceramic Society,2007,35(4):531-536.(in Chinese)
[4]张君,居贤春,郭自力.PVA纤维直径对水泥基复合材料抗拉性能的影响[J].建筑材料学报,2009,12(6):706-710.Zhang Jun,Ju Xianchun,Guo Zili.Tensile properties of fiber reinforced cement composite with different PVAfibers[J].Journal of Building Materials,2009,12(6):706-710.(in Chinese)
[5]徐世烺,李贺东.超高韧性水泥基复合材料直接拉伸试验研究[J].土木工程学报,2009,42(9):32-41.Xu Shilang,Li Hedong.Uniaxial tensile experiments of ultra-high toughness cementitious composite[J].China Civil Engineering Journal,2009,42(9):32-41.(in Chinese)
[6]李艳,刘泽军,梁兴文.高性能PVA纤维增强水泥基复合材料单轴受拉特性[J].工程力学,2013,30(1):322-330.Li Yan,Liu Zejun,Liang Xingwen.Tensile performance of high performance PVA fiber reinforced cementitious composites under uniaxial tension[J].Engineering Mechanism,2013,30(1):322-330.(in Chinese)
[7]薛会青,邓宗才,李建辉.PVA纤维水泥基复合材料的抗拉性能及韧性研究[J].郑州大学学报(工学版),2009,30(1):92-95.Xue Huiqing,Deng Zongcai,Li Jianhui.Tensile performance and toughness of PVA fiber reinforced cementitious composites[J].Journal of Zhengzhou University(Engineering Science),2009,30(1):92-95.(in Chinese)
[8]Parra-Montesinos G J,Peterfreund S W,Chao S.Highly damage-tolerant beam-column joints through use of high-performance fiber-reinforced cement composites[J].ACI Structural Journal,2005,102(3):487-495
[9]Parra-Montesinos G J.High-performance fiberreinforced cement composites:an alternative for seismic design of structures[J].ACI Structural Journal,2005,102(5):668-675.
[10]Qudah S,Maalej M.Application of engineered cementitious composites(ECC)in interior beam-column connections for enhanced seismic resistance[J].Engineering Structures,2014,69(4):235-245.
[11]梁兴文,王英俊,邢朋涛,等.局部采用纤维增强混凝土梁柱节点抗震性能试验研究[J].工程力学,2016,33(4):67-76.Liang Xingwen,Wang Yingjun,Xing Pengtao,et al.Experimental research on seismic behavior of beam-column joints with FRC in core region[J].Engineering Mechanism,2016,33(4):67-76.(in Chinese)
[12]苏骏,徐世烺.高轴压比下UHTCC梁柱节点抗震性能试验[J].华中科技大学学报(自然科学版),2010,38(7):53-56.Su Jun,Xu Shilang.Seismic performance test of UHTCCbeam-column joints under high axial compression ratio[J].Journal of Huazhong University of Science and Technology(Natural Science),2010,38(7):53-56.(in Chinese)
[13]陈红光.PVA纤维混凝土增强框架节点的力学性能研究[D].武汉:湖北工业大学,2012.Chen Hongguang.Research on the mechanical properties of PVA fiber reinforced cement frame joint[D].Wuhan:Hubei University of Industrial,2012.(in Chinese)
[14]程彩霞.PVA纤维水泥基复合材料增强框架节点抗震性能研究[D].武汉:湖北工业大学,2009.Cheng Caixia.A study on the earthquake-resistant behavior of the PVA fiber cementitous composite reinforced frame joints[D].Wuhan:Hubei University of Technology,2009.(in Chinese)
[15]代洁,邓明科,陈佳莉.基于材料延性的高延性混凝土无腹筋梁受剪性能试验研究[J].工程力学,2018,35(2):124-132.Dai Jie,Deng Mingke,Chen Jiali.Influence of matrix ductility on shear behavior of high ductile fiber reinforced concrete beams[J].Engineering Mechanism,2018,35(2):124-132.(in Chinese)
[16]韩建平,刘文林.高轴压比配筋PVA纤维增强混凝土柱抗震性能试验研究[J].工程力学,2017,34(9):193-201.Han Jianping,Liu Wenlin.Experimental investigation on seismic behavior of PVA fiber reinforced concrete columns with high axial compression ratios[J].Engineering Mechanism,2017,34(9):193-201.(in Chinese)
[17]Saghafi M H,Shariatmadar H.Enhancement of seismic performance of beam-column joint connections using high performance fiber reinforced cementitious composites[J].Construction and Building Materials,2018,180(8):665-680.
[18]Liang X W,Wang Y J,Tao Y,et al.Seismic performance of fiber-reinforced concrete interior beam-column joints[J].Engineering Structures,2016.126(11):432-445.
[19]王英俊,梁兴文.纤维增强混凝土梁柱节点受剪承载力计算[J].工程力学,2015,32(12):161-167.Wang Yingjun,Liang Xingwen.Cauculation of the shear capacity of fiber-reinforced concrete beam-column joint[J].Engineering Mechanism,2015,32(12):161-167.(in Chinese)
[20]苏骏,李威,左国望.UHTCC局部增强框架节点抗剪承载力计算方法[J].土木工程学报,2015,48(增刊1):29-35.Su Jun,Li Wei,Zuo Guowang.A calculation method for bearing capacity of ultra high toughness cementitious composite reinforced beam-column joints[J].China Civil Engineering Journal,2015,48(Suppl1):29-35.(in Chinese)
[21]王英俊,梁兴文,吴继伟.纤维增强混凝土梁柱节点受剪承载力计算模型研究[J].工程力学,2016,33(3):77-86.Wang Yingjun,Liang Xingwen,Wu jiwei.Calculation model of the shear capacity of fiber-reinforced concrete beam-column joint[J].Engineering Mechanism,2016,33(3):77-86.(in Chinese)
[22]Comite Euro-International du Beton.Bulletin D’information No.213/214 CEB-FIP Model Code 1990(Concrete Structures)[M].Lausanne:FIB-Fed.Int.du Beton,1993.
[23]GB 50010―2010,混凝土结构设计规范[S].北京:中国建筑工业出版社,2015.GB 50010―2010,Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2015.(in Chinese)
[24]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,2009.Tang Jiuru.Seismic resistance of joints in reinforced concrete frames[M].Nanjing:Dongnan University Press,2009.(in Chinese)
[25]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.Guo Zhenhai,Shi Xudong.Principles and analysis of reinforced concrete[M].Beijing:Tsinghua University Press,2003.(in Chinese)
[26]GB 50011―2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2016.GB 50011―2010,Code for sesmic design of buildings[S].Beijing:China Architecture&Building Press,2016.(in Chinese)
[27]Lowes L N,Mitra N,Altoontash A.A beam-column joint model for simulating the earthquake response of reinforced concrete frames[D].Pacific Earthquake Engineering Research Center,College of Engineering University of California,Berkeley,2003.
[2]蒋欢军,吕西林.钢筋混凝土框架结构层间位移角与构件变形关系研究[J].地震工程与工程振动,2009,29(2):66-72.Jiang Huanjun,LüXilin.Study on the relationship between story drift and element deformation for reinforced concrete frames[J].Journal of Earthquake and Engineering Vibration,2009,29(2):66-72.(in Chinese)
[3]Li V C.高延性纤维增强水泥基复合材料的研究进展及应用[J].硅酸盐学报,2007,35(4):531―536.Li V C.Progress and application of engineered cementitious composites[J].Journal of the Chinese Ceramic Society,2007,35(4):531-536.(in Chinese)
[4]张君,居贤春,郭自力.PVA纤维直径对水泥基复合材料抗拉性能的影响[J].建筑材料学报,2009,12(6):706-710.Zhang Jun,Ju Xianchun,Guo Zili.Tensile properties of fiber reinforced cement composite with different PVAfibers[J].Journal of Building Materials,2009,12(6):706-710.(in Chinese)
[5]徐世烺,李贺东.超高韧性水泥基复合材料直接拉伸试验研究[J].土木工程学报,2009,42(9):32-41.Xu Shilang,Li Hedong.Uniaxial tensile experiments of ultra-high toughness cementitious composite[J].China Civil Engineering Journal,2009,42(9):32-41.(in Chinese)
[6]李艳,刘泽军,梁兴文.高性能PVA纤维增强水泥基复合材料单轴受拉特性[J].工程力学,2013,30(1):322-330.Li Yan,Liu Zejun,Liang Xingwen.Tensile performance of high performance PVA fiber reinforced cementitious composites under uniaxial tension[J].Engineering Mechanism,2013,30(1):322-330.(in Chinese)
[7]薛会青,邓宗才,李建辉.PVA纤维水泥基复合材料的抗拉性能及韧性研究[J].郑州大学学报(工学版),2009,30(1):92-95.Xue Huiqing,Deng Zongcai,Li Jianhui.Tensile performance and toughness of PVA fiber reinforced cementitious composites[J].Journal of Zhengzhou University(Engineering Science),2009,30(1):92-95.(in Chinese)
[8]Parra-Montesinos G J,Peterfreund S W,Chao S.Highly damage-tolerant beam-column joints through use of high-performance fiber-reinforced cement composites[J].ACI Structural Journal,2005,102(3):487-495
[9]Parra-Montesinos G J.High-performance fiberreinforced cement composites:an alternative for seismic design of structures[J].ACI Structural Journal,2005,102(5):668-675.
[10]Qudah S,Maalej M.Application of engineered cementitious composites(ECC)in interior beam-column connections for enhanced seismic resistance[J].Engineering Structures,2014,69(4):235-245.
[11]梁兴文,王英俊,邢朋涛,等.局部采用纤维增强混凝土梁柱节点抗震性能试验研究[J].工程力学,2016,33(4):67-76.Liang Xingwen,Wang Yingjun,Xing Pengtao,et al.Experimental research on seismic behavior of beam-column joints with FRC in core region[J].Engineering Mechanism,2016,33(4):67-76.(in Chinese)
[12]苏骏,徐世烺.高轴压比下UHTCC梁柱节点抗震性能试验[J].华中科技大学学报(自然科学版),2010,38(7):53-56.Su Jun,Xu Shilang.Seismic performance test of UHTCCbeam-column joints under high axial compression ratio[J].Journal of Huazhong University of Science and Technology(Natural Science),2010,38(7):53-56.(in Chinese)
[13]陈红光.PVA纤维混凝土增强框架节点的力学性能研究[D].武汉:湖北工业大学,2012.Chen Hongguang.Research on the mechanical properties of PVA fiber reinforced cement frame joint[D].Wuhan:Hubei University of Industrial,2012.(in Chinese)
[14]程彩霞.PVA纤维水泥基复合材料增强框架节点抗震性能研究[D].武汉:湖北工业大学,2009.Cheng Caixia.A study on the earthquake-resistant behavior of the PVA fiber cementitous composite reinforced frame joints[D].Wuhan:Hubei University of Technology,2009.(in Chinese)
[15]代洁,邓明科,陈佳莉.基于材料延性的高延性混凝土无腹筋梁受剪性能试验研究[J].工程力学,2018,35(2):124-132.Dai Jie,Deng Mingke,Chen Jiali.Influence of matrix ductility on shear behavior of high ductile fiber reinforced concrete beams[J].Engineering Mechanism,2018,35(2):124-132.(in Chinese)
[16]韩建平,刘文林.高轴压比配筋PVA纤维增强混凝土柱抗震性能试验研究[J].工程力学,2017,34(9):193-201.Han Jianping,Liu Wenlin.Experimental investigation on seismic behavior of PVA fiber reinforced concrete columns with high axial compression ratios[J].Engineering Mechanism,2017,34(9):193-201.(in Chinese)
[17]Saghafi M H,Shariatmadar H.Enhancement of seismic performance of beam-column joint connections using high performance fiber reinforced cementitious composites[J].Construction and Building Materials,2018,180(8):665-680.
[18]Liang X W,Wang Y J,Tao Y,et al.Seismic performance of fiber-reinforced concrete interior beam-column joints[J].Engineering Structures,2016.126(11):432-445.
[19]王英俊,梁兴文.纤维增强混凝土梁柱节点受剪承载力计算[J].工程力学,2015,32(12):161-167.Wang Yingjun,Liang Xingwen.Cauculation of the shear capacity of fiber-reinforced concrete beam-column joint[J].Engineering Mechanism,2015,32(12):161-167.(in Chinese)
[20]苏骏,李威,左国望.UHTCC局部增强框架节点抗剪承载力计算方法[J].土木工程学报,2015,48(增刊1):29-35.Su Jun,Li Wei,Zuo Guowang.A calculation method for bearing capacity of ultra high toughness cementitious composite reinforced beam-column joints[J].China Civil Engineering Journal,2015,48(Suppl1):29-35.(in Chinese)
[21]王英俊,梁兴文,吴继伟.纤维增强混凝土梁柱节点受剪承载力计算模型研究[J].工程力学,2016,33(3):77-86.Wang Yingjun,Liang Xingwen,Wu jiwei.Calculation model of the shear capacity of fiber-reinforced concrete beam-column joint[J].Engineering Mechanism,2016,33(3):77-86.(in Chinese)
[22]Comite Euro-International du Beton.Bulletin D’information No.213/214 CEB-FIP Model Code 1990(Concrete Structures)[M].Lausanne:FIB-Fed.Int.du Beton,1993.
[23]GB 50010―2010,混凝土结构设计规范[S].北京:中国建筑工业出版社,2015.GB 50010―2010,Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2015.(in Chinese)
[24]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,2009.Tang Jiuru.Seismic resistance of joints in reinforced concrete frames[M].Nanjing:Dongnan University Press,2009.(in Chinese)
[25]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.Guo Zhenhai,Shi Xudong.Principles and analysis of reinforced concrete[M].Beijing:Tsinghua University Press,2003.(in Chinese)
[26]GB 50011―2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2016.GB 50011―2010,Code for sesmic design of buildings[S].Beijing:China Architecture&Building Press,2016.(in Chinese)
[27]Lowes L N,Mitra N,Altoontash A.A beam-column joint model for simulating the earthquake response of reinforced concrete frames[D].Pacific Earthquake Engineering Research Center,College of Engineering University of California,Berkeley,2003.
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