Seismic analysis of long-span continuous rigid frame bridges in cold regions: a case study of Bridge 1 in north of international tourism resort in Changbai Mountain |
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| Authors: | YIN Xiao WU Di |
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| Institution: | College of Construction Engineering, Jilin University, Changchun 130026, China |
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| Abstract: | It is helpful to improve the seismic design theory of long-span continuous bridges for studying the seismic performance of each cantilever construction state.Taking the Bridge 1 in the north of Changbai-Mountain international tourism resort as an example,the authors studied it in shutdown phase and the cantilever construction process,established the simulation model by using Midas / civil,and analyzed time-history of each construction stage for the bridge.The study shows that long-span bridge cantilever construction in northeastern China can be divided into two-year tasks for construction(suspending in winter).It is needed to think about seismic stability of the cantilever position in shut-down phase of winter.The effect of longitudinal vibration is the most disadvantageous influence to bridge,and its calculation results can provide reference for seismic design of similar bridges in the future. |
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| Keywords: | long-span continuous rigid frame bridge time-history seismic analysis cold region |
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