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K. Rahmati, E. Sebti, S. Mohasseb, "Design and Implementation of Seismic Retrofitting of a Steel Bridge: Case study of Karim-Khan-Zand bridge in Tehran", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 12.1, 2022, doi:10.4203/ccc.2.12.1

Keywords: steel bridge, retrofitting, finite element method, seismic performance, damage resistance.

Abstract

In order to achieve the maximum utilization of the roadways as well as increasing the service life of the bridges, proper traffic transfer, earthquake resistance and damage resistance of the bridges caused by the passage of time; strengthening and repairing of the bridges are essential. In this study, Karim-Khan bridge was selected as a case study to be repaired and retrofitted. The dynamic response of this bridge was investigated by structural finite element analysis method using SAP2000 software. The three-dimensional geometry of the bridge developed through the software environment and advanced options such as the base contact elements and nonlinear material properties were used to assess the effect of different seismic loads on the structural behavior of the critical bridge components. C / D ratio showed that the columns are not ductile due to geometric configuration when subjected to axial load; while their sections in the longitudinal direction are weak in bending. For this reason, the columns are more vulnerable to collapse during the earthquake. Hence it was concluded that the seismic vulnerability of the bridge is high. Regarding the cost of rehabilitation, which was about 30% of the cost of construction of a new bridge and the traffic problems during the construction of the new bridge, the option of improvement and rehabilitation was approved by the technical and civil deputy of Tehran Municipality.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 2 PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: B.H.V. Topping and P. Iványi Paper 12.1 Design and Implementation of Seismic Retrofitting of a Steel Bridge: Case study of Karim-Khan-Zand bridge in Tehran K. Rahmati¹, E. Sebti² and S. Mohasseb^2,3 ¹Tehran Municipality, Tehran, Iran ²Smteam GmbH, Zurich, Switzerland ³University of Tehran, Tehran, Iran doi:10.4203/ccc.2.12.1 Full Bibliographic Reference for this paper K. Rahmati, E. Sebti, S. Mohasseb, "Design and Implementation of Seismic Retrofitting of a Steel Bridge: Case study of Karim-Khan-Zand bridge in Tehran", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 12.1, 2022, doi:10.4203/ccc.2.12.1 Keywords: steel bridge, retrofitting, finite element method, seismic performance, damage resistance. Abstract In order to achieve the maximum utilization of the roadways as well as increasing the service life of the bridges, proper traffic transfer, earthquake resistance and damage resistance of the bridges caused by the passage of time; strengthening and repairing of the bridges are essential. In this study, Karim-Khan bridge was selected as a case study to be repaired and retrofitted. The dynamic response of this bridge was investigated by structural finite element analysis method using SAP2000 software. The three-dimensional geometry of the bridge developed through the software environment and advanced options such as the base contact elements and nonlinear material properties were used to assess the effect of different seismic loads on the structural behavior of the critical bridge components. C / D ratio showed that the columns are not ductile due to geometric configuration when subjected to axial load; while their sections in the longitudinal direction are weak in bending. For this reason, the columns are more vulnerable to collapse during the earthquake. Hence it was concluded that the seismic vulnerability of the bridge is high. Regarding the cost of rehabilitation, which was about 30% of the cost of construction of a new bridge and the traffic problems during the construction of the new bridge, the option of improvement and rehabilitation was approved by the technical and civil deputy of Tehran Municipality. download the full-text of this paper (PDF, 10 pages, 924 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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