Experimental investigations of the Seismic Behavior of RC Bridge Piers under Variable Axial Load
Chen Rong 1,2 Lei Junqing 1
1. Beijing Jiaotong University, School of Civil Engineering, Beijing 100044, China;
2. Beijin University of Civil Engineering and Architecture, Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material, Beijing 100044
To study the seismic performance of RC bridge piers under variable axial force, cyclic loading test were carried out on six specimens, of which one was under constant axial load and the other five with different longitudinal reinforcement ratio, volumetric percentage of stirrups, and shear span ratio were subjected to variable axial force. Based on the test result, the hysteretic curve, fracture distribution, skeleton line, displacement ductility factor, residual deformation, and energy dissipation capacity of the tested specimens were studied. It indicated that variable axial force has apparent influence on the displacement, residual deformation, and the level of destruction of RC bridge piers. According to the performance-based seismic design and the codes of highway bridges, suggestion was proposed to consider varying axial load during design.
陈嵘 1，2,雷俊卿 1. 变轴力钢筋混凝土墩柱抗震性能试验研究[J]. 振动与冲击, 2017, 36(18): 131-139.
Chen Rong 1,2 Lei Junqing 1. Experimental investigations of the Seismic Behavior of RC Bridge Piers under Variable Axial Load. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(18): 131-139.
[1] JTG B02-2013 《公路工程抗震设计规范》[S].北京：人民交通出版社，2013.
JTG B02-2013 Specification of Seismic Design for Highway Engineering[S]. Beijing: China communications press , 2013.
[2] Saadeghvaziri, M.Ala. Nonlinear response and modeling of RC columns subjected to varying axial load[J]. Engineering Structures 1997, 19(6): 417-424.
[3] Agbabian, Higazy, Abdel-Ghaffar, Elnashai. Experimental observations on the seismic shear performance of RC beam-to-column connections subjected to varying axial column force[J]. Earthquake Engineering and Structural Dynamics, 1994, 23(8): 859-876.
[4] Saadeghvaziri, M.Ala. Nonlinear response and modeling of RC columns subjected to varying axial load[J]. Engineering Structures 1997, 19(6): 417-424
[5] Umut Akguzel, Stefano Pampanin. Effects of variation of axial load and bidirectional loading on seismic performance of GFRP retrofitted reinforced concrete exterior beam-column joints[J]. Journal of Composites for Construction, 2010, 14(1): 94-104.
[6] Hugo Rodrigues, André Furtado, António Arêde. Behavior of rectangular reinforced-concrete columns under biaxial cyclic loading and variable axial loads. Journal of structural engineering, 2016, 142(1): 1-8.
[7] 杨红，白绍良. 基于变轴力和定轴力试验对比的钢筋混凝土柱恢复力滞回特性研究[J].工程力学，2003，20（6）：58-64.
Yang Hong, Bai Shaoliang. The hysteretic behavior of R/C columns based on the contrasting tests under constant and varying axial forces[J]. Engineering Mechanic, 2003, 20（6）:58-64.
[8] 顾祥林,蔡茂，林峰.地震作用下钢筋混凝土柱受力性能研究[J].工程力学,2010，27(11):160-165.
Gu Xianglin, Cai Mao, Lin Feng. Study on RC columns subjected to earthquake[J]. Engineering Mechanics, 2010, 27(11): 160-165.
[9] 石庆轩,王朋,李坤,郭智峰,王南,田建勃.加载制度对新型型钢混凝土柱的抗震性能影响[J].工程力学,2014,31（3）：152-159.
Shi Qingxuan, Wang Peng, Li Kun, Guo Zhifeng, Wang Nan, Tian Jianbo. Influence of loading regimes on seismic behavior of new type steel reinforced concrete columns[J]. Engineering Mechanics, 2014, 31(3):152-159.
[10] 李海锋,罗永峰,陈林聪,梅真.轴力变化对箱形钢柱抗震性能的影响[J].西南交通大学学报,2014,49（3）：425-431.
Li Haifeng, Luo Yongfeng, Chen Lincong, Mei Zhen. Effects of axial force fluctuation on seismic behavior of steel box column. Journal of Southwest Jiaotong University, 2014,49(3):425-431.
[11] 王德斌，范国玺，张皓.多维动力加载条件下钢筋混凝土柱力学性能的研究[J].振动与冲击，2016，35(4):35-41.
Wang Debin, Fan Guoxi, Zhang Hao. Dynamic behavior of reinforced concrete columns under multi-dimensional dynamic loadings[J]. Journal of Vibration and Shock, 2016, 35(4):35-41.
[12] 孙治国. 钢筋混凝土桥墩抗震变形能力研究[D].哈尔滨:中国地震局工程力学研究所,2012.
Sun Zhiguo. Research on the seismic deformation capacity of RC bridge columns[D]. Harbin: Institute of engineering mechanics, China Earthquake Administration, 2012.
[13] 朱伯龙.结构抗震试验[M].北京:地震出版社,1989:136-141
[14] JGJ/T 101-2015 《建筑抗震试验规程》[S].北京:中国建筑工业出版社，2015.
JGJ/T 101-2015 Specification for seismic test of buildings[S]. Beijing: China architecture & building press , 2015.
[15] 李贵乾,郑罡,王军.圆形钢筋混凝土桥墩抗震性能(Ⅱ):试验结果评估[J].重庆交通大学学报(自然科学版),2011,30(6):1270-1274.
Li Guiqian, Zheng Gang, Wang Jun. Seismic performance of circular reinforced concrete bridge columns（Ⅱ）: evaluation of experimental results[J]. Journal of Chongqing Jiaotong University（Natural Science）, 2011,320（6）:1270-1274.
[16] 黄照南.CFRP修复震后严重破坏钢筋混凝土桥墩抗震性能试验研究[D].大连:大连理工大学,2009.
Huang Zhaonan. Experimental investigation on the seismic behaviors of severe earthquake damaged RC bridge piers repaired with wrapped CFRP sheets[D]. Dalian: Dalian University of Technology, 2009.
[17] Hose D, Frieder Seible. Performance evaluation database for concrete bridge component and systems under simulated seismic load[R]. Pacific Earthquake Engineering Research Center, PEER Report 1999/11.
[18] Japan Road Association, Design specification of highway bridge, part[S]: Seismic Design,2002.
[19] 罗征,李建中.低周往复荷载下空心矩形墩抗震性能试验研究[J].振动与冲击,2013,32(8):183-188.
Luo Zheng, Li Jianzhong. Tests for a seismic performance of rectangular hollow thin-walled bridge columns under low-cycle reversed loading[J]. Journal of Vibration and Shock, 2013,32（8）:183-188.
[20] Applied Technology Council. (2012). FEMA P-58-1: Seismic performance assessment of buildings—Volume 1, methodology. FEMA, Redwood City, CA.
[21] 梁文兴.结构抗震性能设计理论与方法[M].北京:科学出版社,2011:1-44.
[22] JTG/T B02-01-2008 《公路桥梁抗震设计细则》[S].北京：人民交通出版社，2008.
JTG/T B02-01-2008 Guidelines for Seismic Design of Highway Bridges[S]. Beijing: China communications press, 2008.
