Shake table test and numerical analysis on wave passage effect of three-tower two-span suspension bridge

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (7) : 44-48.

Yan Jukao1,2 Li Jianzhong2 Peng Tianbo2 Wang Junwen3

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Abstract

In order to study wave passage effect of long-span multi-tower suspension structure, a 1/40 scale of Taizhou Changjiang Highway Bridge was designed, constructed and tested on the shaking table. Elastic cable devices were designed by adopting connecting methods between the main beam and middle tower. The shake table test method was used to consider the wave passage effect and the seismic response under different apparent wave velocity was studied. The test results show that structural displacement response increased remarkably under wave passage effect in comparison with uniform excitation: the top longitudinal displacement of middle tower and relative displacement between main beam and north tower increased more than 50 percent; the relative longitudinal between main beam and approach beam increased more than 1 times. Therefore，only considering uniform excitation is unsafe to long-span multi-tower suspension bridge. Comparing the shaking table test with numerical analysis, it is found that the numerical value and shape of displacement time histories is consistent in both. The numerical analysis of wave passage effect by absolute displacement method is simpler, mechanics concepts of this method is very clear. Absolute displacement method can also be used for wave passage effect of long-span bridge.

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three-tower two-span suspension bridge / wave passage effect / shake table test / numerical analysis

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Yan Jukao1,2 Li Jianzhong2 Peng Tianbo2 Wang Junwen3. Shake table test and numerical analysis on wave passage effect of three-tower two-span suspension bridge[J]. Journal of Vibration and Shock, 2016, 35(7): 44-48

References

[1] Bogdanoff, J. L., J. E. Goldberg, A. J. Schiff. The Effect of Ground Transmission Time on the Response of Long Structures.[J]Bulletin of the Seismological Society of America. 1965, 55(3): 627-640.
[2] Dumanoglu A A, Severn R T. Seismic Response of Modern Suspension Bridges to Asynchronous Vertical Ground Motion [C]//ICE Proceedings. Thomas Telford, 1987, 83(4): 701-730.
[3] Dumanoglu, A. A.，R. T. Severn.Seismic Response of Modern Suspension Bridges to Asynchronous Longitudinal and Lateral Ground Motion [C]//ICE Proceedings. Thomas Telford, 1989, 87(1): 73-86.
[4] Dumanoglu, A. A., J. M. W. Brownjohn, R. T. Severn. Seismic Analysis of the Fatih Sultan Mehmet (second Bosporus) Suspension Bridge.[J] Earthquake Engineering & Structural Dynamics 1992,21(10): 881-906.
[5] Abdel-Ghaffar, A. M. and R. G. Stringfellow. Response of Suspension Bridges to Travelling Earthquake Excitations: Part I. Vertical Response.[J] International Journal of Soil Dynamics and Earthquake Engineering 1984,3(3): 62-72.
[6] Abdel-Ghaffar, A. M. and R. G. Stringfellow. Response of Suspension Bridges to Travelling Earthquake Excitations: Part I. Lateral Response.[J] International Journal of Soil Dynamics and Earthquake Engineering 1984,3(3): 73-81.
[7] 胡世德,范立础.江阴长江公路大桥纵向地震反应分析.[J]．同济大学学报(自然科学版),1994,22(4):433-438.
Hu Shide,Fan Lichu.The Longitudinal Earthquake Response Analysis for the Jiangyin Yangtze River Bridge [J]. Journal of Tongji University (Natural Science Edition), 1994, 22(4):433-438. (in Chinese)
[8] Saiidi M S, Nelson R, Sadrossadat-Zadeh M and Buckle. Shake table studies of a 4-span reinforced concrete bridge model. Proceedings 2007 ANCER Meeting, Earthquake Engineering Research: From Strong Seismic Regions to Regions of Moderate Seismicity, HK, China.
[9] Yang CY. Seismic analysis of long span bridges including the effects of spatial variation of seismic waves on bridges. Ph. D. thesis. 2007. Department of Civil Engineering, Hong Kong University of Science and Technology.
[10] 周颖，吕西林.建筑结构振动台模型试验方法与技术 [M].北京：科学出版社，2012.
[11] Li, J., Yan, J.,and Peng, T,et al. Shake Table Studies of Seismic Structural Systems of a Taizhou Changjiang Highway Bridge Model. J. Bridge Eng., 2015.20(3), 04014065
[12] 闫聚考,李建中,彭天波. 泰州长江公路大桥振动台试验--试验设计及抗震体系试验结果分析.[J].东南大学学报(自然科学版),2014,44(2):357-362.
Yan Jukao,Peng Tianbo andLi Jianzhong. Shake table test of Taizhou Changjiang Highway Bridge:test design and result analysis of seismic structural system [J]. Journal of Southeast University (Natural Science Edition), 2014, 44(2):357-362. (in Chinese)
[13] Yan Jukao, Han Lei, Zhao Yi, et al.Scaled down model design of shaking table test of Taizhou Bridge[J]. Engineering Sciences, 2012, 10(3):33-37.
[14] Edward L. Wilson. Three dimensional static and dynamic analysis of structures: a physical approach with emphasis on earthquake engineering.[M] Computers and Structures Inc., 1998.