Effect of Concrete Shear Keys at Abutment on Seismic Response of Continuous Girder Bridge

doi:10.11908/j.issn.0253-374x.2017.07.002

Home > Archive>Volume 45, Issue 07, 2017 >0948-0953. DOI:10.11908/j.issn.0253-374x.2017.07.002

Effect of Concrete Shear Keys at Abutment on Seismic Response of Continuous Girder Bridge
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                        10.11908/j.issn.0253-374x.2017.07.002
                    
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                        WANG YiWANG Yi
College of Civil Engineering, Tongji University, Shanghai 200092， China；College of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243032, China
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MO JinshengMO Jinsheng
College of Civil Engineering, Tongji University, Shanghai 200092， China
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LI JianzhongLI Jianzhong
College of Civil Engineering, Tongji University, Shanghai 200092， China
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Abstract:

To investigate the effect of the concrete shear keys at abutment on transverse seismic reaction of a short and medium span continuous girder bridge, a finite element model was built based a continuous girder bridge. The effects of peak strength of the concrete shear keys at abutment on transverse seismic reaction of a continuous girder bridge were analyzed using the nonlinear time history method. The results show that when the peak strength of the concrete shear key at abutment increases, the shear demand of the top of abutment increases while the displacement demand of bearing at pier decreases, but the decrease amplitude declined to zero. A reasonable selection of the peak strength of the concrete shear key at abutment can effectively reduce the displacement demand of bearing at the pier, and avoid the severe seismic damage on the abutment.

Key words:continuous girder bridge ;abutment; concrete shear keys; transverse seismic response

Reference

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WANG Yi, MO Jinsheng, LI Jianzhong. Effect of Concrete Shear Keys at Abutment on Seismic Response of Continuous Girder Bridge[J].同济大学学报(自然科学版),2017,45(07):0948~0953

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Received:August 12,2016
Revised:May 18,2017
Adopted:February 08,2017
Online: July 20,2017
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