A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Application of Buckling Restrained Damper to Steel Arch Bridge
The seismic resistance of quite a few existing bridges may not be satisfactory for the current seismic design codes in Japan. Retrofit is needed for those bridges. To this end, the application of the device of the buckling restrained bracing (BRB) to a steel arch bridge as a damper (BRD) is explored. An arch bridge model based on the existing bridge is studied. A road is located on the top of the arch bridge. The nonlinear dynamic finite element analysis indicates that several vertical and diagonal members of the arch bridge are possibly damaged under large seismic loads. BRDs are installed to the girder on the top of the arch bridge to reduce the overall horizontal movement. A parametric study on the seismic performance of the arch bridge with the BRDs is then conducted by changing the length and the cross-sectional area of the yielding core of the BRD. The damage is indeed reduced by the BRDs. Yet even the best values of the parameters cannot save all the arch members: some vertical members are still possibly damaged, undergoing column buckling. Then more BRDs are installed to prevent such vertical members from buckling, connecting the joint in the middle part of the vertical member and the joint at the bottom of the adjacent vertical member. The numerical analysis shows that the buckling of those vertical members can then be avoided.
Application of Buckling Restrained Damper to Steel Arch Bridge
The seismic resistance of quite a few existing bridges may not be satisfactory for the current seismic design codes in Japan. Retrofit is needed for those bridges. To this end, the application of the device of the buckling restrained bracing (BRB) to a steel arch bridge as a damper (BRD) is explored. An arch bridge model based on the existing bridge is studied. A road is located on the top of the arch bridge. The nonlinear dynamic finite element analysis indicates that several vertical and diagonal members of the arch bridge are possibly damaged under large seismic loads. BRDs are installed to the girder on the top of the arch bridge to reduce the overall horizontal movement. A parametric study on the seismic performance of the arch bridge with the BRDs is then conducted by changing the length and the cross-sectional area of the yielding core of the BRD. The damage is indeed reduced by the BRDs. Yet even the best values of the parameters cannot save all the arch members: some vertical members are still possibly damaged, undergoing column buckling. Then more BRDs are installed to prevent such vertical members from buckling, connecting the joint in the middle part of the vertical member and the joint at the bottom of the adjacent vertical member. The numerical analysis shows that the buckling of those vertical members can then be avoided.
Application of Buckling Restrained Damper to Steel Arch Bridge
Lecture Notes in Civil Engineering
Mazzolani, Federico M. (editor) / Dubina, Dan (editor) / Stratan, Aurel (editor) / Sosorburam, Purevdorj (author) / Yamaguchi, Eiki (author) / Enkhbold, Namkhainyambuu (author)
International Conference on the Behaviour of Steel Structures in Seismic Areas ; 2022 ; Timisoara, Romania
Proceedings of the 10th International Conference on Behaviour of Steel Structures in Seismic Areas ; Chapter: 105 ; 949-956
2022-05-08
8 pages
Article/Chapter (Book)
Electronic Resource
English
Design of Buckling Restrained Damper for Retrofit of Steel Truss Bridge
| Springer Verlag | 2022
APPLICATION OF BUCKLING RESTRAINED DAMPER TO TRUSS BRIDGE FOR BETTER SEISMIC PERFORMANCE
| TIBKAT | 2022
Buckling-restrained fractional energy consumption friction damper
| European Patent Office | 2022