Comparative Study on Nonlinear Earthquake Response of Girder Isolated Bridges with LRB and Model Shaking Table Test

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Abstract: The thesis is aimed to study the characteristics nonlinear seismic response of the isolated continuous girder bridges with LRB. Inorder to achieve the aim, force- deformation properties of the LRB is considered as bilinear first, the bouc-wen model is adopted to imitate the force nonlinear deformation behavior of LRB, and by using Finite element method, the motion equation of the Isolation system of continuous girder bridge is established, then some shaking table tests towards the model of isolated continuous girder bridges with LRB is done. On this basis of it, by comparing the experimental results and calculation results, such as the acceleration and displacement of deck, vertical force of bearing, and the relationship between the Isolation layer displacement and the Level force displacement of the Bearing, we can see that the difference between the analytical results and the experimental results are very small. The results show that the calculation method can analyze Nonlinear Seismic Response of isolated continuous girder bridges with LRB efficiently. But when the vertical earthquake component is larger ,whether the results of the Vertical tension are produced or not, designing the Rubber bearings should be considered.

Info:

Periodical:

Advanced Materials Research (Volumes 706-708)

Edited by:

Ran Chen, Wen-Pei Sung and Jimmy C.M. Kao

Pages:

472-477

Citation:

J. D. Zhan et al., "Comparative Study on Nonlinear Earthquake Response of Girder Isolated Bridges with LRB and Model Shaking Table Test", Advanced Materials Research, Vols. 706-708, pp. 472-477, 2013

Online since:

June 2013

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$41.00

[1] TANG Jia-xiang. Isolated Design of Building Structure [M]. Wuhan: Huazhong University of Science and Technology Press, (1993).

[2] HWANG, J. S., CHIOU, J. M., SHENG, L. H., and GATES, J. H. A Refined Model for Base isolated Bridges with Bi-linear Hysteretic Bearings. Earthquake Spectra, 1996, 12(2), 245-273.

DOI: https://doi.org/10.1193/1.1585879

[3] Tan, R. Y., and Huang, M. C. System Identification of a Bridge with Lead-rubber Bearings [J] . Comput. Struct., 74(3): 267-280.

[4] GHOBARAH, A., and ALI, H. M. Seismic Performance of Highway Bridges[J]. Eng. Struct., 1998, 10(3), 175-166.

[5] LI Jian-zhong, XIN Xue-zhong. Nonlinear Seismic Response Analyses of Isolation Systems for Continuous Bridges [J]. Earthquake Engineering and Engineering Vibration, 1998, 18(3): 67-73.

[6] ZHU Dong-sheng, LAO Yuanchang, SHEN Dayuan. The seismic response features of isolated bridge with LRB [J]. Engineering Mechanics, 2000, 18(1): 119-125.

[7] WANG Li, YAN Gui-ping, SUN Li. Analysis of Seismic Response of Isolated Bridges with LRB [J]. Engineering Mechanics, 2003, 20(5): 124-129.

[8] HUANG Jian-wen, ZHU Xi, ZHANG Jing. Simplified Response Analysis and Research on Design Parameters of Seismically Isolated Bridges[J]Journal of Northern Jiaotong University, 2004, 28(1): 17-22.

[9] YANG Feng-li, ZHONG Tie-yi, XIA He. Study on Optimization of the Design Parameter of Seismic Absorption and Isolation bearing for Railway Simple Supported Beam Bridges [J]. Journal of The China Railway Society, 2006, 28 (3): 128-132.

[10] WEN. Y. H., Method for Random Vibrations of Hysteretic Systems. J Eng Mech Div, ASEC 1976, 102: 249-63.