Influence of using Micropiles as Retrofitting Method for Bridge Shallow Footing: Numerical Study
Hassan. A. Abas1, M.A. Ismaeil2
1Hassan. A. Abas*, Department of Civil Engineering, Prince Mugrin University, Al-Madinah Al-Munawarah, Saudi Arabia.
2M.A. Ismaeil, Department of Civil Engineering, Prince Mugrin University, Al-Madinah Al-Munawarah, Saudi Arabia.
Manuscript received on February 11, 2021. | Revised Manuscript received on February 15, 2021. | Manuscript published on February 28, 2021. | PP: 186-190 | Volume-10 Issue-4, February 2021 | Retrieval Number: 100.1/ijitee.D85570210421| DOI: 10.35940/ijitee.D8557.0210421
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Seismic retrofitting of the existing bridges, which was not properly constructed for seismic loading, is necessary. This paper examines and evaluates the effect of using micropiles as retrofitting method to improve seismic performance for bridge shallow footing. Numerical simulations using Plaxis-3D have been performed to study the effect of using micropiles to mitigate the seismic hazard and enhance the deformation characteristic of bridge shallow footing. Displacement and acceleration induced by seismic loading before and after retrofitting were assessed and compared. The results showed a significant influence of the micropiles on the control of the displacement and acceleration during the seismic period.
Keywords: Dynamic analysis, Micropile, Plaxis-3D, Shallow footing, Seismic retrofitting.