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| Analysis of Nonlinear Seismic Response of Bridge Piers on Consideration of Bi-directional Coupled Effect |
| ZHUO Yi,WANG Fei |
| The Third Railway Survey and Design Institute Group Corporation，Tianjin 300142，China |
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Abstract Research purposes: To analyze the dynamic response characteristics of the RC bridge piers under bi-directional seismic excitation，the bi-directional shaking table test of a RC bridge column was simulated by using the independent developed fiber beam-column numerical analysis platform FENAP, and the simulation result was compared with the experimental test results. Moreover, the time history response of bridge column under unidirectional seismic excitation was also analyzed by using the FENAP and its result was compared with bi-directional results to obtain the dynamic response difference between the two seismic loading conditions.
Research conclusions : (1)The comparison result of numerical simulation by using FENAP with the experiment test of a RC bridge column under bi-directional shaking table test with FENAP and test shows that the FENAP platform can simulate the complicated coupled bi-axial bending moment behaviors of bridge column and predict the amplitude and appearance time of peak displacement on the top of bridge column effectively to get the comparatively accurate numerical results. ( 2 ) Furthermore，the comparison of the time history response of bridge column under unidirectional seismic excitation with bi-directional results shows that the analyzed response displacement of the bridge column subjected to bi-directional excitation is larger than that subjected to unidirectional excitation，while the response acceleration is smaller.(3)The bi-directional coupled effect of RC bridge pier can not be ignored，and the stiffness of column will be overestimated and the response displacement will be underestimated if only one directional seismic response is considered. (4)This research result is available for the seismic design of large span continuous bridge of highway , rail railway and transit.
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Received: 16 April 2013
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[1]杜修力，韩强，李忠献，等. 5.12汉川地震中山区公路桥梁震害及启示[J].北京工业大学学报，2008 (12 ) : 1270 -1279.
Du Xiuli, Han Qiang, Li Zhongxian, etc. The SeismicDamage of Bridges in the 2008 Wenchuan Earthquake and Lessons From Its Damage[J].Journal of Beijing University of Technology，2008(12):1270-1279.
[2〕王海波，陈伯望，沈蒲生.双向压弯钢筋混凝土柱的非 线性分析[J].计算力学学报，2006(4) :502-507.
Wang Haibo , Chen Bowang , Shen Pusheng. Nonlinear Analysis of RC Column Subjected to Axial Force and Biaxial Bending [J].Chinese Journal of Computational Mechanics , 2006 ( 4) : 502-507.
[3]孙宪春，邱法维，万力.钢筋混凝土柱在弯剪扭祸合作 用下的试验研究[J].工程抗震与加固改造，2008 (3 ) : 88 - 92.
Sun Xianchun，Qiu Fawei, Wan Li. Experimental Tests on Reinforced Concrete Columns under Baxial and Torsional Quasi-static Loading[J」.Earthquake Resistant Engineering and Retrofitting , 2008 ( 3):88- 92.
[4]杜宏彪，沈聚敏.在任意加载路径下双轴弯曲钢筋混凝 土柱的非线性分析[J].地震工程与工程振动， 1990(3) :41-55.
Du Hongbiao , Shen Jumin. Nonlinear Analysis of RC Columns under Arbitrary Loading Paths[J」. Earthquake Engineering and Engineering Vibration, 1990(3):41-55.
[5〕Taucer F F , Spacone E , Filippou F C. A Fiber Beam- column Element for Seismic Response Analysis of Reinforced Concrete Structures [R ].EERC Report 91/ 17，Earthquake Engineering Research Center, University of California, Bekerley, CA, 1991.
[6] 禚一，王菲.罕遇地震下城际铁路连续梁桥延性抗震设- 计[J].铁道工程学报，2012(4) :66-71.
Zhuo Yi, Wang Fei. Seismic Ductility Design for Intercity Railway Continuous Bridge Under Rare Earthquake [J].Journal of Railway Engineering Society, 2012 (4):66-71.
[7] 禚一，李忠献.钢筋混凝土纤维梁柱单元实用模拟平台 [J]. 工程力学，2011(4) :102-108.
Zhuo Yi , LI Zhongxian. A Practical Simulation Platform of Reinforced Concrete Fiber Beam-column Element [J].Engineering Mechanics , 2011(4):102- 108.
[8] 禚一.钢筋混凝土桥梁精细化建模及地震碰撞分析 [D].天津:天津大学，2010.
Zhuo Yi. Refined Modeling and Seismic Pounding Analysis of Reinforced Concrete Bridges [D].Tianjin: Tianjin University, 2010.
[9 ] Filippou F C , Popov E P , Bertero V V. Effects of Bond Deterioration on Hysteretic Behavior of einforced Concrete Joints [R].EERC Report 83/19, Earthquake Engineering Research Center , University of California , Bekerley , CA , 1983.
[10] Menegotto M , Pinto P E. Slender RC Compressed Members in Biaxial Bending [J].Journal of Structural Engineering, ASCE, 1977 (S):587-605.
[11]Mohd-Yassin M H. Nonlinear Analysis of Prestressed Concrete Structures under Monotonic and Cyclic Loads [D].University of California , Berkeley , 1994.
[12 ] Scott B D , Park R , Priestley M J N. Stress-strain Behavior of Concrete Confined by Overlapping Hoops at Low and High Strain Rates[J].ACI Structural Journal, 1982(79):13-27.
[13]Kent D C , Park R. Flexural Members with Confined Concrete [J].Journal of the Structural Division, ASCE, 1971(7) :1969-1990.
[14] NISHIDA H , UNJOH H. Dynamic Response Characteristic of Reinforced Concrete Column Subjected to Bilateral Earthquake Ground Motions[C].13th World Conference on Earthquake Engineering Vancouver, B. C.，Canada , 2004.
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2013, Vol. 30 
