Effect of nonlinearity of restrainer and supports on the elasto-plastic seismic response of continuous girder bridge
During an earthquake, the nonlinearity of the bridge structure mainly occurs at the supports, bridge piers and restrainers. When entering nonlinear stage, members of the bridge structure affect the elasto-plastic seismic response of the whole structure to a certain extent; for multi-span continuou...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2014-10-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero30/numero_30_art_59.pdf |
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| Summary: | During an earthquake, the nonlinearity of the bridge structure mainly occurs at the supports, bridge
piers and restrainers. When entering nonlinear stage, members of the bridge structure affect the elasto-plastic
seismic response of the whole structure to a certain extent; for multi-span continuous bridges, longitudinal
restrainers can be installed on the movable piers to optimise the distribution of seismic force and enable the
movable piers to bear a certain amount of seismic effect. In order to evaluate the effect of nonlinearity of
restrainer and supports on the elasto-plastic seismic response of continuous girder bridge, analytical models of
continuous girder bridge structure considering the nonlinearity of movable supports, restrainers and bridge piers
were built and the nonlinear time history analysis was conducted to evaluate the effect of nonlinearity of
restraining devices and supports on the elasto-plastic seismic response of continuous girder bridge. Relevant
structural measures and recommendation were made to reduce the seismic response of the fixed piers of the
continuous girder bridge. |
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| ISSN: | 1971-8993 1971-8993 |