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Abstract:
The dynamic characteristics and three-dimensional seismic response of a two-span continuous skew girder bridge were analyzed, using parameters, such as, skew angle, shear span ratio, reinforcement ratio and axial compression ratio and so on. Taking a skewed girder bridge of Fujian as an engineering example, a 1:5 scale two-span continuous skewed girder bridge model was designed for shaking table tests. Adopting shaking table tests and FE numerical analysis, the seismic responses and damage characteristics of the skewed girder bridge were studied. Results of shaking table tests showed that the structure's acceleration response and displacement response are guite different under different types of ground motion and at the same site or different types of ground motion and at different sites; under the same skew angle. the smaller the axial compression ratio, the larger the acceleration and displacement responses; when the axial compression ratio is the same, the smaller the skew angle, the larger the acceleration and displacement responses; a reasonable choice of skew angle has a great influence on the dynamic performance of skew bridges in the design of skew bridges. © 2016, Editorial Office of Journal of Vibration and Shock. All right reserved.
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Journal of Vibration and Shock
ISSN: 1000-3835
CN: 31-1316/TU
Year: 2016
Issue: 5
Volume: 35
Page: 228-232
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