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Nonlinear seismic response analysis for Gang-Zhu-Ao bridge(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年06期
Page:
31-35
Research Field:
Publishing date:
2011-12-20

Info

Title:
Nonlinear seismic response analysis for Gang-Zhu-Ao bridge
Author(s):
NING Jing1;  DAI Jian-guo2
1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Shanghai Municipal Engineering Design Institute Group Co Ltd, Shanghai 200092, China
Keywords:
bridge engineering;  continuous girder bridge;  lead rubber bearing;  seismic response
PACS:
U442.55
DOI:
-
Abstract:
According to the design features of seismically isolated continuous bridges, the bi-directional nonlinear characteristics of lead rubber bearing are simulated by using two orthogonal nonlinear level spring elements. Based on the finite element software, the analysis models of seismically isolated and non-isolated continuous bridges are established. And the nonlinear seismic response for these analysis models is carried out under the function of the reasonably chosen seismic motion. The analytic results indicate that the natural period of seismically isolated bridge can be prolonged to avoid the principal period of ground, and the seismic energy of structure can be efficiently consumed by the hysteretic energy dissipation of lead rubber bearing. So the response of bridge structure can be reduced to make sure that the most of component work in the elastic phase, and the structure can be well protected. 2 tabs, 11 figs, 9 refs.

References:

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Memo

Memo:
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Last Update: 2011-12-20