Damage control of a twin-column pier with a replaceable steel shear link in a cap beam under transverse seismic motion
Open Access
- 2 April 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Advances in Bridge Engineering
- Vol. 2 (1), 1-16
- https://doi.org/10.1186/s43251-020-00031-6
Abstract
This paper proposes a novel twin-column pier with a steel shear link (SSL) installed in the cap beam to reduce seismic damage in the transverse direction. The SSL interrupts the rigid cap beam and relieves the coupled deformation of the two columns. Benefits of the yieldable SSL in the event of a strong earthquake are the longer effective deformation of a column and limited axial compressive load. A benchmark reinforced-concrete bridge is employed in a seismic performance evaluation to verify the damage reduction performance of the novel twin-column pier with an SSL. Five numerical models, calibrated in a physical component test, are built in ABAQUS; that is, one original bridge and four novel bridges with different SSLs and accompanying configurations. Modal analysis shows that introducing the SSL does not change the overall structural dynamic characteristics. The nonlinear dynamic analysis results indicate that adopting the SSL effectively reduces the peak compressive strain of the reinforced-concrete column, but energy dissipation from the SSL is negligible compared with the total inputted seismic energy. There is no evident change in the macro seismic response of the twin-column pier when using the SSL, such as overall drift and structural damping ratio. Moreover, a transverse continuous main girder is suggested for realizing an additional restoring moment at the column top, which further reduces compressive strain.Keywords
Funding Information
- National Natural Science Foundation of China (No. 52078436)
This publication has 14 references indexed in Scilit:
- Experimental and Analytical Study of Fully Prefabricated Damage-Tolerant Beam to Column Connection for Earthquake-Resilient FrameJournal of Structural Engineering, 2019
- RC arch bridge seismic performance evaluation by sectional N-M interaction and coupling effect of brace beamsEngineering Structures, 2019
- Performance of an innovative self-centering buckling restrained brace for mitigating seismic responses of bridge structures with double-column piersEngineering Structures, 2017
- Development of an energy dissipation restrainer for bridges using a steel shear panelJournal of Constructional Steel Research, 2014
- Shape optimization design of steel shear panel dampersJournal of Constructional Steel Research, 2014
- Seismic performance assessment of highway bridges equipped with superelastic shape memory alloy-based laminated rubber isolation bearingEngineering Structures, 2012
- Bridge Piers with Structural Fuses and Bi-Steel Columns. I: Experimental TestingJournal of Bridge Engineering, 2012
- Seismic Design of Hybrid Coupled Wall Systems: State of the ArtJournal of Structural Engineering, 2010
- Seismic Damage of and Seismic Rehabilitation Techniques for Railway Reinforced Concrete StructuresJournal of Advanced Concrete Technology, 2009
- Seismic damage of highway bridges during the 2008 Wenchuan earthquakeEarthquake Engineering and Engineering Vibration, 2009