Seismic isolation of long span and super long unit continuous beam bridge with friction pendulum bearings

被引：0
作者：
Xia, Xiu-Shen [1 ]
Cui, Liang-Bo [1 ]
Chen, Xing-Chong [1 ]
机构：
[1] School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu
来源：
Gongcheng Lixue/Engineering Mechanics | 2015年 / 32卷
关键词：
Continuous beam bridge; Friction pendulum bearing; Isolation; Long span; Super long unit;
D O I：
10.6052/j.issn.1000-4750.2014.04.S029
中图分类号：
学科分类号：
摘要：
Isolation using friction pendulum bearings is utilized in a long span and super-long unit prestressed concrete continuous girder bridge with a long period. A finite element model of the full bridge is established, and a bilinear hysteretic model is used to simulate the friction pendulum bearings. A nonlinear time history response analysis is carried out by inputting three safety evaluation seismic motions with 50-year 2% exceedance probability and seismic performance as verification. The results show that when the friction pendulum bearings have a curvature radius of 5 m and a coefficient of sliding friction of 0.03, the piers and its pile foundations behave elastically. The maximum displacements of the bearing are 207 mm and 198 mm in the horizontal and transverse directions, respectively. The displacements can easily be accommodated by the gap. Long span and super-long unit continuous beam bridges with long period have their own structural features; friction pendulum bearings can effectively improve their seismic performance. ©, 2015, Tsinghua University. All right reserved.
引用
收藏
页码：167 / 171
页数：4
相关论文
共 10 条
  • [1] Xia X., Seismic isolation of combined system of continuous girder-arch railway bridge using friction pendulum bearing, Northwestern Seismological Journal, 34, 4, pp. 350-354, (2012)
  • [2] He T., Yuan M., Chen L., Et al., Design of a long span and long continuous unit continuous girder bridge on section of Fuzhou-Xiamen railway spanning Eulong River, Bridge Construction, 4, pp. 43-46, (2008)
  • [3] Song Z., Cai X., Application of viscous damper devices in the seismic design of long span and long unit continuous girder bridges on speed high railway, Journal of Tsinghua University (Science and Technology), 52, 8, pp. 1102-1105, (2012)
  • [4] Xia X., Research on seismic design of tall piers for railway bridges, (2012)
  • [5] Xia X., Zhao H., Ouyang H., Friction pendulum bearing for seismic isolation of high speed railway bridge, Earthquake Resistant Engineering and Retrofitting, 36, 3, pp. 21-26, (2014)
  • [6] Symans M.D., Charney F.A., Whittaker A.S., Et al., Energy dissipation systems for seismic applications: current practice and recent developments, Journal of Structural Engineering, 134, 1, pp. 3-21, (2008)
  • [7] Guan Z., Li J., Xu Y., Performance test of energy dissipation bearing and its application in seismic control of a long-span bridge, Journal of Bridge Engineering, 15, 6, pp. 622-630, (2009)
  • [8] Ye A., Fan L., Seismic response reduction of a super-long-span cable-stayed bridge by adding dampers, Journal of Tongji University: Natural Science, 34, 7, pp. 859-863, (2006)
  • [9] Xia X., Chen X., Wang X., Et al., Effect of shear key on seismic response of bridge using isolation bearing, Earthquake Engineering and Engineering Vibration, 32, 6, pp. 104-109, (2012)
  • [10] Skinner R.I., An Introduction to Seismic Isolation, pp. 2-4, (1993)
1