Dynamic performance analysis of joints of RC frame structure with NES
YANG Haixu1, SHI Ming1, WANG Haibiao1, FAN Dingjian2, ZHANG Maohua1, SHI Xinyu1
1. School of Civil Engineering, Northeast Forestry University, Harbin 150040,China;
2. Shanxi Modern Architecture Design and Research Institute, Xian 710021, China
Abstract：In order to study the influence of NES shock absorber on the seismic performance of reinforced concrete frame structure joints, a new type of NES shock absorber was designed and manufactured, and a shaking table test of a five-story reinforced concrete frame structure with a scale of 1∶4 was carried out to analyze the changes of steel bar strain, joint failure mode, structural displacement and structural natural frequency at the joints of first and second floors of NES frame structure after earthquake damage. The test results show that the NES shock absorber can effectively reduce the strain of longitudinal hoop bars of reinforced concrete beams and columns, reduce the relative displacement of the structure, slow down the generation of plastic hinges at the bottom and top of the column, and there are beam end failure and in-joint shear failure at the joints, which basically fulfills the “strong column and weak beam” mechanism of the frame. The NES shock absorber can effectively reduce the shear stress of the concrete at the joint and thus alleviate the shear failure of the joint concrete. The final failure of the whole structure is caused by the yield of the steel bar at the bottom of the column, the crushing of the concrete at the foot of the column and the loose connection with the bottom plate. After setting up NES shock absorber, the decline rate of structural natural frequency decreases, and NES nonlinear shock absorber has a good control effect in reducing structural seismic response, improving structural anti-seismic capacity and reducing structural damage.
杨海旭1，石明1，王海飙1，范定坚2，张茂花1，史心如1. NES减震RC框架结构节点动力性能分析[J]. 振动与冲击, 2020, 39(7): 180-188.
YANG Haixu1, SHI Ming1, WANG Haibiao1, FAN Dingjian2, ZHANG Maohua1, SHI Xinyu1. Dynamic performance analysis of joints of RC frame structure with NES. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(7): 180-188.
[1]占亚翔，蒋隆敏，唐从青，吴城林.轴压比对框架节点抗震性能影响的数值模拟分析[J].湖南工业大学学报，2017，31(01)：30-34+40.
ZHAN Yaxiang，JIANG Longmin，TANG Congqing，WU Chenglin.A numerical simulation analysis of the influence of axial compression ratio on the seismic capacity[J].Journal of Hunan University of Technology，2017,31（01）：30-34+40.
[2] 清华大学土木工程结构专家组，西南交通大学土木工程结构专家组，北京交通大学土木工程结构专家组，叶列平，陆新征.汶川地震建筑震害分析[J].建筑结构学报，2008(04):1-9.
Civil and Structural Groups of Tsinghua University，XinanJiaotong University and Beijing Jiaotong University， YE Lieping，LU Xinzheng.Analysis on seismic damage of buildings in the Wenchuan earthquake[J].Journal of Building Structures，2008(04):1-9.
[3]Pantelides C.P，Hansen J，Nadauld J and Reaveley L. D. Assessment of Reinforced Concrete Building Exterior Joints with Substandard Details[R]. University of Colifornia，Berkeley：PEER，2002.
[4]Park S. J and Mosalam K. M. Experimental and analytical studies on reinforced concrete buildings with seismically vulnerable beam-column joints[R].University of Colifornia，Berkeley：PEER，2012.
[5]Angelo Masi，Giuseppe Santarsiero，Gian PieroLignol，Gerardo M. Verderame. Study of the seismic behavior of external RC beam–column joints through experimental tests and numerical simulations[J]. Engineering Structures，2013，52.
[6]傅剑平，张川，陈滔，白绍良.钢筋混凝土抗震框架节点受力机理及轴压比影响的试验研究[J].建筑结构学报，2006(03)：67-77.
FU Jianping，ZHANG Chuan，CHEN Tao，BAI Shaoliang.Experimental investigation of shear mechanism and effect of axial-compression ratio on joints in earthquake-resistant reinforced concrete frames[J].Journal of Building Structures，2006(03)：67-77.
[7] 陈玲俐，于洁，王建.钢筋混凝土框架节点破坏模式影响因素分析及分化参数研究[J].建筑结构，2012，42(07)：76-80+92.
Chen Lingli，Yu Jie，Wang Jian.Factors analysis and polarization parameters research on failure modes of reinforced concrete frame joints[J].Building Structure，2012，
42(07)：76-80+92.
[8] 范国玺,宋玉普,王立成.钢筋混凝土框架结构梁柱中节点 动态力学性能试验研究[J].振动与冲击,2015,34(12):58-64+100.
FAN Guoxi，SONG Yupu，WANG Licheng.Experimental study on dynamic mechanical properties of interior ＲC frame beam-column joints [J].Journal of Vibration and Shock，2015，34(12)：58-64+100.
[9] 黄思凝,郭迅,刘红彪.高层钢筋混凝土斜交网格结构振动台试验研究[J].振动与冲击,2012,31(11):127-132.
HUANG Sining，GUO Xun，LIU Hongbiao.Shaking tabletest for a high-rise diagonal frame structure model[J].Journal of Vibration and Shock，2012，31(11)：127-132.
[10]Vakakis A F，Gendelman O V. Energy Pumping in Coupled Mechanical Oscillators，Part II: Resonance Capture[J]. Trans. ASME ，J. Appl. Mech.，2001，68：42–48.
[11]Nucera F，Vakakis A F，Mc Farland D M，et al.Targeted Energy Transfer in Vibro-impact Oscillators for Seismic Mitigation[J].Nonlinear Dyn. 2007,50:651-677.
[12]张也弛，孔宪仁.非线性耦合振子间产生靶能量传递的初始条件[J].哈尔滨工业大学学报，2012，44 (07)：21-26.
ZHANG Yechi，KONG Xianren.Initial conditions for targeted energy transfer in coupled nonlinear oscillators[J]Journal of Harbin Institute of Technology,
2012,44 (07):21-26.
[13]Starosvetsky Y，Gendelman O.At tractors of harmonically forced linear oscillator with attached nonlinear energy sinkⅡ：optimization of nonlinear vibration absorber [J]. Nonlinear Dynamics,2008,50;47-57.
[14]刘中坡，吕西林，鲁正，王菁菁.轨道型非线性能量阱振动控制的振动台试验研究[J].建筑结构学报，2016，37(11)：1-9.
LIU Zhongpo，LU Xilin,LU Zheng，WANG Jingjing. Experimental investigation on vibration control effect of track nonlinear energy sink[J].Journal of Building Structures2016，37(11)：1-9.
[15] 混凝土结构设计规范：GB 50010—2010[S].北京：中国建筑工业出版社，2010.
Code for design of concrete structures：GB 50010—2010［S］.Beijing：China Architecture＆Building Press，2010．
[16] GB 50011—2010建筑抗震设计规范[S].北京：中国建筑工业出版社，2010.
Code for seismic design of Buildings：GB 50011—2010［S］.Beijing：China Architecture＆Building Press，2010．
[17] 张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动，1997，17（2）.
ZHANG Minzheng.Some problems in application of similarity law in earthquake simulation experiments[J].Earthquake Engineering and Engineering Dynamics，1997，17（2）．
[18] 薛松涛,秦岭,陈镕,王远功.TMD的个数对其减振效果的影响[J].力学季刊,2002(04):534-539.
Influence of Number of TMD On lts Control Effect[J].Chinese Quarterly of Mechanics，2002（04）:534-539
