不同构造形式的CSRC节点变形性能试验研究
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摘要
为研究核心型钢在节点区的截断形式对核心型钢混凝土(CSRC)节点变形性能的影响,进行了4个CSRC节点试件的低周反复加载试验。主要研究参数为核心型钢在节点区的截断锚固形式和轴压比,通过试验数据分析了各参数对CSRC节点的强度、刚度、延性和滞回特性等的影响。在对试件总体变形及塑性铰区域和节点核芯区变形量测结果统计分析基础上,研究了梁端的弯曲变形、节点区的剪切变形和柱身的弯曲变形所产生的侧移在框架结构总侧移中所占的比例及其规律。研究表明:该文提出的两种核心型钢的截断锚固构造对试件的抗震性能无明显不利影响。核心型钢在节点核芯区的截断会导致节点区剪切变形增加。两种不同核心型钢构造形式的试件节点区剪切变形基本相同。该文可为CSRC结构的拟静力弹塑性反应分析提供参考。
Four core steel reinforced concrete (CSRC) joints were tested under cyclic loadings to investigate the effect of truncation and embedded details of core steel to the deformation performance of the specimens. The main parameters are axial compression ratio and the truncation and embedded details of core steel in a joint core. The effect of these parameters on the strength, stiffness, ductility and the hysteretic behaviour of CSRC joints are investigated based on test results. Based on the analysis of the test data on the global deformation of CSRC joints and the local deformation in a plastic zone and a joint core, the flexural deformation of a beam, the shear deformation of a joint core and the flexural deformation of a column to global deformation of the frame as well as their regularities are investigated. It is indicated that the truncation and embedded details of core steel had no obvious negative effect on the seismic behaviour of the specimens. The shear deformation of a joint core is increased because of the truncation and embedded details of core steel. The specimens with the two truncation and embedded details of core steel have almost same shear deformation of a joint core. This paper can be referenced by the nonlinear static pushover analysis of CSRC structures.
Four core steel reinforced concrete (CSRC) joints were tested under cyclic loadings to investigate the effect of truncation and embedded details of core steel to the deformation performance of the specimens. The main parameters are axial compression ratio and the truncation and embedded details of core steel in a joint core. The effect of these parameters on the strength, stiffness, ductility and the hysteretic behaviour of CSRC joints are investigated based on test results. Based on the analysis of the test data on the global deformation of CSRC joints and the local deformation in a plastic zone and a joint core, the flexural deformation of a beam, the shear deformation of a joint core and the flexural deformation of a column to global deformation of the frame as well as their regularities are investigated. It is indicated that the truncation and embedded details of core steel had no obvious negative effect on the seismic behaviour of the specimens. The shear deformation of a joint core is increased because of the truncation and embedded details of core steel. The specimens with the two truncation and embedded details of core steel have almost same shear deformation of a joint core. This paper can be referenced by the nonlinear static pushover analysis of CSRC structures.
引文
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[15]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 subassemblies in RC frame[J].Journal of Building Structures,2001,22(1):2―7.(in Chinese)
[16]郭子雄,庄云,黄群贤,刘阳.SRC柱-RC梁组合件抗震性能试验研究[J].建筑结构学报,2009,30(2):39―46.Guo Zixiong,Zhuang Yun,Huang Qunxian,Liu Yang.Experimental study on seismic behaviors of SRC column-RC beam hybrid subassemblies[J].Journal of Building Structures,2009,30(2):39―46.(in Chinese)
[2]薛建阳,赵鸿铁,杨勇.型钢混凝土节点抗震性能及构造方法[J].世界地震工程,2002,18(2):61―64.Xue Jianyang,Zhao Hongtie,Yang Yong.Seismic behavior and construction method of steel reinforced concrete joints[J].World Earthquake Engineering,2002,18(2):61―64.(in Chinese)
[3]徐亚丰,王连广,曹阅.钢骨高强混凝土框架节点抗剪承载力的理论分析[J].东北大学学报(自然科学版),2003,24(4):386―388.Xu Yafeng,Wang Lianguang,Cao Yue.Theory analysis of high strength steel-reinforced concrete joint shear capacity[J].Journal of Northeastern University(Natural Science),2003,24(4):386―388.(in Chinese)
[4]Richard Liew J Y,Teo T H,Shanmugam N E.Composite joints subjected to reversal of loading-Part1:experimental study[J].Journal of Constructional Steel Research,2004,60:221―246.
[5]Kitano A,Goto Y,Joh O.Experimental study on ultimate shear strength of interior beam-column joints of steel and reinforced concrete structure[C].Proceedings of the13th World Conference on Earthquake Engineering,Canada,Paper No.626,2004.
[6]王连广,贾连光,张海霞.钢骨高强混凝土边节点抗震性能试验研究[J].工程力学,2005,22(1):182―186.Wang Lianguang,Jia Lianguang,Zhang Haixia.Experimental study of aseismic behavior of steel-reinforced high strength concrete joints[J].Engineering Mechanics,2005,22(1):182―186.(in Chinese)
[7]李忠献,张雪松,丁阳.装配整体式型钢混凝土框架节点抗震性能试验研究[J].建筑结构学报,2005,26(4):32―38.Li Zhongxian,Zhang Xuesong,Ding Yang.Seismic behavior of prefabricated steel reinforced concrete integral frame[J].Journal of Building Structures,2005,26(4):32―38.(in Chinese)
[8]Walter Salvatore,Oreste Bursi,Daniele Lucchesi.Design,testing and analysis of high ductile partial-strength steel-composite beam-to-column joints[J].Computer&Structures,2005,83:2334―2352.
[9]陈丽华,李爱群,鲁风勇.外包钢-混凝土组合梁与钢筋混凝土柱节点的试验研究[J].土木工程学报,2007,40(11):41―47.Chen Lihua,Li Aiqun,Lu Fengyong.Experimental study on joints of outer-plated steel-concrete composite beam and reinforced concrete columns[J].China Civil Engineering Journal,2007,40(11):41―47.(in Chinese)
[10]郑山锁,曾磊,吕营.型钢高强高性能混凝土框架节点抗震性能试验研究[J].建筑结构学报,2008,29(3):128―136.Zheng Shansuo,Zeng Lei,Lu Ying.Experimental research on seismic behavior of steel reinforced high strength and high performance concrete frame joints[J].Journal of Building Structures,2008,29(3):128―136.(in Chinese)
[11]陆铁坚,贺子瑛,余志武.钢-混凝土组合梁与混凝土柱节点的抗震性能试验研究[J].建筑结构学报,2008,29(1):70―74.Lu Tiejian,He Ziying,Yu Zhiwu.Experimental research on seismic behavior of SC beam to RC column connection[J].Journal of Building Structures,2008,29(3):70―74.(in Chinese)
[12]Kitano A,Goto Y,Joh O.Experimental study on shear resistance of SRC column and steel beams frame constructed by simplified method[C].Proceedings of the14th World Conference on Earthquake Engineering,Beijing,Paper No.05-06-0125,2008.
[13]郭子雄,刘阳,黄秋来.高轴压比核心型钢混凝土柱抗震性能试验研究[J].哈尔滨工业大学学报,2007,39(增2):167―171.Guo Zixiong,Liu Yang,Huang Qiulai.Experimental study on seismic behavior of core steel reinforced concrete columns[J].Journal of Harbin Institute of Technology,2007,39(S2):167―171.(in Chinese)
[14]刘阳,郭子雄,张志伟.核心型钢混凝土柱的轴压比限值试验研究[J].地震工程与工程振动,2008,28(3):82―86.Liu Yang,Guo Zixiong,Zhang Zhiwei.Limit value of axial compression ratio for CSRC columns[J].Earthquake Engineering and Engineering Vibration,2008,28(3):82―86.(in Chinese)
[15]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 subassemblies in RC frame[J].Journal of Building Structures,2001,22(1):2―7.(in Chinese)
[16]郭子雄,庄云,黄群贤,刘阳.SRC柱-RC梁组合件抗震性能试验研究[J].建筑结构学报,2009,30(2):39―46.Guo Zixiong,Zhuang Yun,Huang Qunxian,Liu Yang.Experimental study on seismic behaviors of SRC column-RC beam hybrid subassemblies[J].Journal of Building Structures,2009,30(2):39―46.(in Chinese)
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