1. Civil Engineering School of Southwest Jiaotong University, Chengdu Sichuan 610031, China;
2. Key Laboratory of Seismic Engineering and Technology of Sichuan Province, Chengdu Sichuan 610031, China;
3. China Rail Eryuan Engineering Group Co. Ltd., Chengdu Sichuan 610031, China
Seismic Isolation Performance of a Concrete Continuous Girder Bridge Based on High-Damped Rubber Bearings
SHAO Chang-jiang1,2, HAN Guo-qing3, FANG Lin1, QIAN Yong-jiu1
1. Civil Engineering School of Southwest Jiaotong University, Chengdu Sichuan 610031, China;
2. Key Laboratory of Seismic Engineering and Technology of Sichuan Province, Chengdu Sichuan 610031, China;
3. China Rail Eryuan Engineering Group Co. Ltd., Chengdu Sichuan 610031, China
摘要A novel high-damped rubber bearing was applied to a continuous girder bridge. The flexuary capacity of piers and piles and the displacement demand of bearing were used as research objects. Simulation was performed by using a numerical model of the seismic isolation performance along the longitudinal direction of an irregular concrete continuous girder bridge. Various parameters and isolator layouts were optimized on the basis of FEM results to regularize and unify the seismic demands of the entire system. An unseating prevention device and a restrainer were used along the longitudinal direction to reduce the seismic displacement of the isolated girders. The design scheme of the pile foundation was also discussed. The effects of soil stiffness, nonlinearity of bearings, and collision of restrainer blocks were included in this analytical course. Numerical results reveal the excellent isolation performance of high-damped rubber bearings.
Abstract：A novel high-damped rubber bearing was applied to a continuous girder bridge. The flexuary capacity of piers and piles and the displacement demand of bearing were used as research objects. Simulation was performed by using a numerical model of the seismic isolation performance along the longitudinal direction of an irregular concrete continuous girder bridge. Various parameters and isolator layouts were optimized on the basis of FEM results to regularize and unify the seismic demands of the entire system. An unseating prevention device and a restrainer were used along the longitudinal direction to reduce the seismic displacement of the isolated girders. The design scheme of the pile foundation was also discussed. The effects of soil stiffness, nonlinearity of bearings, and collision of restrainer blocks were included in this analytical course. Numerical results reveal the excellent isolation performance of high-damped rubber bearings.
基金资助:Supported by the National Natural Science Foundation of China (No.51178395);the Natural Science Foundation of Jiangxi Province (No.20151BAB201028)
邵长江, 韩国庆, 房麟, 钱永久. 基于高阻尼橡胶支座的混凝土连续梁桥减隔震性能研究[J]. Journal of Highway and Transportation Research and Development, 2016, 10(2): 35-39.
SHAO Chang-jiang, HAN Guo-qing, FANG Lin,QIAN Yong-jiu. Seismic Isolation Performance of a Concrete Continuous Girder Bridge Based on High-Damped Rubber Bearings. Journal of Highway and Transportation Research and Development, 2016, 10(2): 35-39.
[1] SKINNER R I, ROBINSON W H, MCVERRY G H. An Introduction to Siemic Isolation[M]. Chichbester:John Wiley & Sons, 1993.
[2] MARSICO M R. Siesmic Isolation and Energy Dissipation:Theoretical Basis and Applications[D]. Naples:University of NAPLES, 2008.
[3] WANG Ke-hai, SUN Yong-hong, WEI Han, et al. Comments on Seismic Strengthening for Structural Engineering in China after Wenchuan Earthquake[J]. Journal of Highway and Transportation Research and Development, 2008,25(11):54-59. (in Chinese)
[4] ZHOU Hai-tao, Review and Prospect of Earthquake Resistance and Disaster Mitigation[J]. Technology of Highway Engineering, 2010, 27(8):39-43. (in Chinese)
[5] ZHOU Yun, WU Cong-xiao, ZHANG Chong-ling. Analysis and Design of Seismic Isolation Structure in Outpatient Building of the Lushan County People's Hospital[J]. Building Structure, 2013, 43(24):23-27. (in Chinese)
[6] ZHUANG Xue-zhen, SHEN Chao-yong, JIN Jian-min. Experimental Study on Mechanical Property of High Damping Rubber Bearing for Bridge[J]. Earthquake Engineering and Engineering Vibration, 2006, 26(5):208-212. (in Chinese)
[7] YANG Liang, XIAO Jie, WANG Wen-xin, et al. Analysis of Seismic Isolation and Ductility for Long-span Continuous Bridges[J]. Journal of Highway and Transportation Research and Development, 2011, 28(8):73-78. (in Chinese)
[8] PENG Tian-bo, LI Jian-zhong, FAN Li-chu. Development and Application of Double Spherical Aseismic Bearing[J]. Journal of Tongji University:Natural Science, 2007, 35(2):176-180.
[9] GUO Lei, LI Jian-zhong, FAN Li-chu. Research on Seismic Isolation Design for Long-span Continuous Bridges[J]. China Civil Engineering Journal, 2006, 39(3):81-85. (in Chinese)
[10] WANG Hao, WANG Chun-feng, LI Ai-qun, et al, Seismic Performance of new Isolated Continuous Bridge in High Intensity Region[J]. Journal of Southeast University, Natural Science Edition, 2014, 44(4):793-798. (in Chinese)
[11] CHEN Ling-kun, JIANG Li-zhong, WANG Li-ping, et al. Seismic Isolation Application to High-Speed Railway Bridges with Lead Rubber Bearings[J]. Journal of Huazhong University of Science and Technology:Natural Science Edition, 2012, 40(1):77-81. (in Chinese)
[12] JT/T 842-2012, High Damping Seismic Isolation Rubber Bearings for Highway Bridges[S]. (in Chinese)
[13] CJJ166-2011, Code for Seismic Design of Urban Bridge[S]. (in Chinese)
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2016, Vol. 10 
