钢筋混凝土框架节点抗裂承载力研究
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摘要
根据10个钢筋混凝土框架变梁中节点试件低周反复荷载试验,重点分析了节点核心区尺寸、轴压比等因素对该类非常规节点抗裂性能的影响。结果表明:该类节点左梁、右梁刚度不同,反复荷载下柱端轴压力发生波动,理论分析时可用系数α来表征轴压力对节点区抗裂性能的影响。在以往试验研究的基础上提出包含系数α的框架节点(如常规中节点、边节点、宽扁梁节点、变梁中节点等)抗裂承载力计算公式,并通过国内外97个节点试件的108组试验数据对其进行验证,吻合良好。
Ten specimens of interior joints with different depth beams were tested under reversed cyclic loadings.The experimental study was conducted by focusing on the influence of joint core dimensions and axial compression ratio on crack resistance of interior joints.Test results indicate that the column axial load fluctuates from time to time because of the unbalanced force occurred in the beam-column subassemblage due to the significant difference on stiffness between the deeper beam and the shallow beam.Based on the test results,a theoretical expression of influencing factors α was put forward.Furthermore,a theoretical formula of crack resistance capacity of beam-column joints(including ordinary interior joints,exterior joints,wide flat beam-column joints and joints with different depth beams) was proposed in this study.The formula was verified using 108 test data of 97 beam-column joints at home and abroad.The good agreement between the experimental results and prediction results of suggested formula is achieved.
Ten specimens of interior joints with different depth beams were tested under reversed cyclic loadings.The experimental study was conducted by focusing on the influence of joint core dimensions and axial compression ratio on crack resistance of interior joints.Test results indicate that the column axial load fluctuates from time to time because of the unbalanced force occurred in the beam-column subassemblage due to the significant difference on stiffness between the deeper beam and the shallow beam.Based on the test results,a theoretical expression of influencing factors α was put forward.Furthermore,a theoretical formula of crack resistance capacity of beam-column joints(including ordinary interior joints,exterior joints,wide flat beam-column joints and joints with different depth beams) was proposed in this study.The formula was verified using 108 test data of 97 beam-column joints at home and abroad.The good agreement between the experimental results and prediction results of suggested formula is achieved.
引文
[1]中华人民共和国国家标准.GB50010-2002,混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.National Standard of the People’s Republic of China.GB 50010-2002,Code for design of concrete structures[S].Beijing:China Architectural&Building Press,2002.(in Chinese)
[2]赵鸿铁.钢筋混凝土梁柱节点的抗裂性[J].建筑结构学报,1990,11(6):38―48.Zhao Hongtie.Crack resistance of reinforce concrete beam-column joints[J].Journal of Building Structures,1990,11(6):38―48.(in Chinese)
[3]王静峰,孙捷.不同加腋宽度下钢筋混凝土偏心节点的抗裂性能[J].世界地震工程,2004,20(4):67―70.Wang Jingfeng,Sun Jie.Experimental study on crack resistance of eccentric beam—Column joints of reinforced concrete frame[J].World Earthquake Engineering,2004,20(4):67―70.(in Chinese)
[4]Pantelides C P,Clyde C,Reaveley L D.Performance based evaluation of reinforced concrete building exterior joints for seismic excitation[J].Earthquake Spectra,2002,18(3):449―480.
[5]刘伯权,邢国华,吴涛.钢筋混凝土框架异型中节点抗裂性能试验研究[J].土木工程学报,2009,42(10):67―73.Liu Boquan,Xing Guohua,Wu Tao.Experimental study of crack resistance performance of irregular interior joints in reinforced concrete frame structures[J].China Civil Engineering Journal,2009,42(10):67―73.(in Chinese)
[6]中华人民共和国国家标准.GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.National Standard of the People’s Republic of China.GB 50011-2001,Code for seismic design of buildings[S].Beijing:China Architectural&Building Press,2001.(in Chinese)
[7]Taylor H P J,Clarke J L.Some detailing problems in concrete frame structures[J].The Structural Engineer,1976,54(1):19―32.
[8]帕克R,波利T著.钢筋混凝土结构[M].秦文钺,译.重庆:重庆大学出版社,1986.Park R,Paulay T.Reinforced concrete structures[M].Translated by Qin Wenyue.Chongqing:Chongqing University Press,1986.(in Chinese)
[9]Joh O,Goto Y,Shibata T.Behavior of reinforced concrete beam-column joints with eccentricity[J].Design of Beam-Column Joints for Seismic Resistance,SP123-12,ACI,1991:317―357.
[10]白国良,朱佳宁,李红星.钢筋混凝土框架异型节点抗裂计算[J].世界地震工程,2003,19(3):12―16.Bai Guoliang,Zhu Jianing,Li Hongxing.The anti-crack calculation on abnormal joint of reinforced concrete frame[J].World Earthquake Engineering,2003,19(3):12―16.(in Chinese)
[11]赵成文,张殿惠,王天锡.反复荷载下高强混凝土框架内节点抗震性能试验研究[J].沈阳建筑工程学院学报,1993,9(3):260―268.Zhao Chengwen,Zhang Dianhui,Wang Tianxi.Experimental study on the aseismic property of the beam-column joints in high-strength concrete frame under alternating load[J].Journal of Shenyang Architectural and Civil Engineering Institute,1993,9(3):260―268.(in Chinese)
[12]赵公华,张殿惠.RC/SRC结构梁柱边节点抗剪强度的试验研究[J].沈阳建筑工程学院学报,1991,7(2):117―122.Zhao Gonghua,Zhang Dianhui.Experiment study on shear strength of exterior joint for RC/SRC structure beam-column[J].Journal of Shenyang Architectural and Civil Engineering Institute,1991,7(2):117―122.(in Chinese)
[13]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.Lu Xilin,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)
[14]余琼,李思明.核心区和柱混凝土强度不等时节点的性能研究[J].同济大学学报(自然科学版),2004,32(12):1583―1588.Yu Qiong,Li Siming.Research on frame s joint that concrete strength of core is inferior to that of column[J].Journal of Tongji University(Natural Science),2004,32(12):1583―1588.(in Chinese)
[15]方根生,欧阳林.低周反复荷载下钢筋混凝土框架边节点抗剪强度的试验研究[J].西南交通大学学报,1990,76(2):33―38.Fang Gensheng,Ouyang Lin.Shear strength of exterior joints of reinforced concrete frames subjected to low cyclic loading[J].Journal of Southwest Jiaotong University,1990,76(2):33―38.(in Chinese)
[16]刘翠兰,肖良丽,彭建.高强混凝土框架边节点抗震性能分析[J].甘肃工业大学学报,2002,28(4):96―99.Liu Cuilan,Xiao Liangli,Peng Jian.Analysis of anti-seismic capability of peripheral joints in high-strength concrete frame[J].Journal of Gansu University of Technology,2002,28(4):96―99.(in Chinese)
[17]吴波,王维俊.碳纤维布加固钢筋混凝土框架节点的抗震性能试验研究[J].土木工程学报,2005,38(4):60―65.Wu Bo,Wang Weijun.An experimental study on the seismic behavior of beam-column joints strengthened with carbon fiber sheets[J].China Civil Engineering Journal,2005,38(4):60―65.(in Chinese)
[18]季韬,钱在兹,庄一舟.配筋钢纤维混凝土宽扁梁柱节点抗震性能的试验研究[J].浙江大学学报(工学版),2000,34(4):388―392.Ji Tao,Qian Zaizi,Zhuang Yizhou.An experimental investigation on earthquake resistance behavior of steel fiber reinforced concrete wide flat beam-column joints[J].Journal of Zhejiang University(Engineering Science),2000,34(4):388―392.(in Chinese)
[19]徐斌,程懋堃,张美励.核芯区混凝土强度低于柱的框架节点受力性能试验研究[J].建筑结构,2006,36(6):18―23.Xu Bin,Cheng Maokun,Zhang Meili.Experimental study on behavior of reinforced concrete beam-column joint with lower core concrete strength[J].Building Structure,2006,36(6):18―23.(in Chinese)
[20]唐九如,冯纪寅,庞同和.钢筋混凝土框架梁柱节点核心区抗剪强度试验研究[J].东南大学学报(自然科学版),1985,15(4):61―74.Tang Jiuru,Feng Jiyin,Pang Tonghe.Experimental study of shear strength of R/C beam-column joint cores[J].Journal of Southeast University(Natural Science Edition),1985,15(4):61―74.(in Chinese)
[21]马乐为,刘瑛,周小真.钢筋混凝土框架中节点粘钢加固抗震性能试验研究[J].西安建筑科技大学学报,1996,28(4):414―418.Ma Lewei,Liu Ying,Zhou Xiaozhen.On aseismic behavior of interior frame joint reinforced with adhered steel sheet[J].Journal of Xi’an University of Architecture and Technology,1996,28(4):414―418.(in Chinese)
[22]抗震节点研究小组.不同柱梁强度比的梁柱节点的抗震性能[J].建筑结构,1980,10(1):17―21.Research Group on Seismic Joints.Seismic behavior of beam-column joints with different ratioes of column-to-beam strength[J].Building Structure,1980,10(1):17―21.(in Chinese)
[23]郭慧英.轴压力对节点抗震性能的影响和框架边节点的抗剪强度[D].天津:天津大学,1999.Guo Huiying.Study on axial load influence on seismic behavior of beam-column joints and the shear strength of exterior joints in frame structure[D].Tianjin:Tianjin University,1999.(in Chinese)
[24]Meinheit D F,Jirsa J O.The shear strength of reinforced concrete beam-column joints[R].Technical Report CESRL Report No.77-1,University of Texas,Austin,1977.
[25]邢国华.钢筋混凝土框架变梁异型节点破坏机理及设计方法研究[D].西安:长安大学,2010.Xing Guohua.Research on failure mechanism and design method of interior joint with different depth beams in RC frame structure[D].Xi’an:Chang’an University,2010.(in Chinese)
[2]赵鸿铁.钢筋混凝土梁柱节点的抗裂性[J].建筑结构学报,1990,11(6):38―48.Zhao Hongtie.Crack resistance of reinforce concrete beam-column joints[J].Journal of Building Structures,1990,11(6):38―48.(in Chinese)
[3]王静峰,孙捷.不同加腋宽度下钢筋混凝土偏心节点的抗裂性能[J].世界地震工程,2004,20(4):67―70.Wang Jingfeng,Sun Jie.Experimental study on crack resistance of eccentric beam—Column joints of reinforced concrete frame[J].World Earthquake Engineering,2004,20(4):67―70.(in Chinese)
[4]Pantelides C P,Clyde C,Reaveley L D.Performance based evaluation of reinforced concrete building exterior joints for seismic excitation[J].Earthquake Spectra,2002,18(3):449―480.
[5]刘伯权,邢国华,吴涛.钢筋混凝土框架异型中节点抗裂性能试验研究[J].土木工程学报,2009,42(10):67―73.Liu Boquan,Xing Guohua,Wu Tao.Experimental study of crack resistance performance of irregular interior joints in reinforced concrete frame structures[J].China Civil Engineering Journal,2009,42(10):67―73.(in Chinese)
[6]中华人民共和国国家标准.GB50011-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.National Standard of the People’s Republic of China.GB 50011-2001,Code for seismic design of buildings[S].Beijing:China Architectural&Building Press,2001.(in Chinese)
[7]Taylor H P J,Clarke J L.Some detailing problems in concrete frame structures[J].The Structural Engineer,1976,54(1):19―32.
[8]帕克R,波利T著.钢筋混凝土结构[M].秦文钺,译.重庆:重庆大学出版社,1986.Park R,Paulay T.Reinforced concrete structures[M].Translated by Qin Wenyue.Chongqing:Chongqing University Press,1986.(in Chinese)
[9]Joh O,Goto Y,Shibata T.Behavior of reinforced concrete beam-column joints with eccentricity[J].Design of Beam-Column Joints for Seismic Resistance,SP123-12,ACI,1991:317―357.
[10]白国良,朱佳宁,李红星.钢筋混凝土框架异型节点抗裂计算[J].世界地震工程,2003,19(3):12―16.Bai Guoliang,Zhu Jianing,Li Hongxing.The anti-crack calculation on abnormal joint of reinforced concrete frame[J].World Earthquake Engineering,2003,19(3):12―16.(in Chinese)
[11]赵成文,张殿惠,王天锡.反复荷载下高强混凝土框架内节点抗震性能试验研究[J].沈阳建筑工程学院学报,1993,9(3):260―268.Zhao Chengwen,Zhang Dianhui,Wang Tianxi.Experimental study on the aseismic property of the beam-column joints in high-strength concrete frame under alternating load[J].Journal of Shenyang Architectural and Civil Engineering Institute,1993,9(3):260―268.(in Chinese)
[12]赵公华,张殿惠.RC/SRC结构梁柱边节点抗剪强度的试验研究[J].沈阳建筑工程学院学报,1991,7(2):117―122.Zhao Gonghua,Zhang Dianhui.Experiment study on shear strength of exterior joint for RC/SRC structure beam-column[J].Journal of Shenyang Architectural and Civil Engineering Institute,1991,7(2):117―122.(in Chinese)
[13]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.Lu Xilin,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)
[14]余琼,李思明.核心区和柱混凝土强度不等时节点的性能研究[J].同济大学学报(自然科学版),2004,32(12):1583―1588.Yu Qiong,Li Siming.Research on frame s joint that concrete strength of core is inferior to that of column[J].Journal of Tongji University(Natural Science),2004,32(12):1583―1588.(in Chinese)
[15]方根生,欧阳林.低周反复荷载下钢筋混凝土框架边节点抗剪强度的试验研究[J].西南交通大学学报,1990,76(2):33―38.Fang Gensheng,Ouyang Lin.Shear strength of exterior joints of reinforced concrete frames subjected to low cyclic loading[J].Journal of Southwest Jiaotong University,1990,76(2):33―38.(in Chinese)
[16]刘翠兰,肖良丽,彭建.高强混凝土框架边节点抗震性能分析[J].甘肃工业大学学报,2002,28(4):96―99.Liu Cuilan,Xiao Liangli,Peng Jian.Analysis of anti-seismic capability of peripheral joints in high-strength concrete frame[J].Journal of Gansu University of Technology,2002,28(4):96―99.(in Chinese)
[17]吴波,王维俊.碳纤维布加固钢筋混凝土框架节点的抗震性能试验研究[J].土木工程学报,2005,38(4):60―65.Wu Bo,Wang Weijun.An experimental study on the seismic behavior of beam-column joints strengthened with carbon fiber sheets[J].China Civil Engineering Journal,2005,38(4):60―65.(in Chinese)
[18]季韬,钱在兹,庄一舟.配筋钢纤维混凝土宽扁梁柱节点抗震性能的试验研究[J].浙江大学学报(工学版),2000,34(4):388―392.Ji Tao,Qian Zaizi,Zhuang Yizhou.An experimental investigation on earthquake resistance behavior of steel fiber reinforced concrete wide flat beam-column joints[J].Journal of Zhejiang University(Engineering Science),2000,34(4):388―392.(in Chinese)
[19]徐斌,程懋堃,张美励.核芯区混凝土强度低于柱的框架节点受力性能试验研究[J].建筑结构,2006,36(6):18―23.Xu Bin,Cheng Maokun,Zhang Meili.Experimental study on behavior of reinforced concrete beam-column joint with lower core concrete strength[J].Building Structure,2006,36(6):18―23.(in Chinese)
[20]唐九如,冯纪寅,庞同和.钢筋混凝土框架梁柱节点核心区抗剪强度试验研究[J].东南大学学报(自然科学版),1985,15(4):61―74.Tang Jiuru,Feng Jiyin,Pang Tonghe.Experimental study of shear strength of R/C beam-column joint cores[J].Journal of Southeast University(Natural Science Edition),1985,15(4):61―74.(in Chinese)
[21]马乐为,刘瑛,周小真.钢筋混凝土框架中节点粘钢加固抗震性能试验研究[J].西安建筑科技大学学报,1996,28(4):414―418.Ma Lewei,Liu Ying,Zhou Xiaozhen.On aseismic behavior of interior frame joint reinforced with adhered steel sheet[J].Journal of Xi’an University of Architecture and Technology,1996,28(4):414―418.(in Chinese)
[22]抗震节点研究小组.不同柱梁强度比的梁柱节点的抗震性能[J].建筑结构,1980,10(1):17―21.Research Group on Seismic Joints.Seismic behavior of beam-column joints with different ratioes of column-to-beam strength[J].Building Structure,1980,10(1):17―21.(in Chinese)
[23]郭慧英.轴压力对节点抗震性能的影响和框架边节点的抗剪强度[D].天津:天津大学,1999.Guo Huiying.Study on axial load influence on seismic behavior of beam-column joints and the shear strength of exterior joints in frame structure[D].Tianjin:Tianjin University,1999.(in Chinese)
[24]Meinheit D F,Jirsa J O.The shear strength of reinforced concrete beam-column joints[R].Technical Report CESRL Report No.77-1,University of Texas,Austin,1977.
[25]邢国华.钢筋混凝土框架变梁异型节点破坏机理及设计方法研究[D].西安:长安大学,2010.Xing Guohua.Research on failure mechanism and design method of interior joint with different depth beams in RC frame structure[D].Xi’an:Chang’an University,2010.(in Chinese)
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