Seismic response evaluation of retrofitted Vincent Thomas bridge under spatially variable ground motions |
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| Institution: | 1. M&H Enterprises, Inc., 19450 State Highway 249, Suite 600, Houston, TX 77070-3058, USA;2. Department of Civil Engineering, Indian Institute of Technology, Kanpur, UP 208016, India;3. Department of Civil and Environmental Engineering, University of California, Irvine, CA 92697-2175, USA;1. Penn State University, 336D Reber Building, University Park, PA 16802, United States;2. Mechanical Engineering, Penn State University, 157D Hammond Building, University Park, PA 16802, United States;1. College of Field Engineering, PLA University of Science and Technology, Nanjing 210007, China;2. Fluid Structure Interactions Group, University of Southampton, SO16 7QF, United Kingdom;3. China Ship Scientific Research Center, Wuxi 214082, China;4. Nanjing Guangbo Engineering Technology Co., Ltd, Nanjing 210007, China;1. Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, PA 18015, USA;2. Department of Civil and Environmental Engineering, University of Hawaii, Honolulu, HI 96822, USA |
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| Abstract: | In this study, a three dimensional finite element (FE) model of the Vincent Thomas bridge is developed using a widely used software. In order to show the appropriateness of the model, the eigenproperties of the bridge model are evaluated and compared with the results of system identification from ambient vibration and the 2008 Chino Hills earthquake response data. A new simulation technique is developed to generate spectrum-compatible spatial variable ground motions. The response of Vincent Thomas bridge under spatially varying ground motion is evaluated by nonlinear time history analysis. Using spatially variable motions, it is found out that the response in some locations on the bridge girder, may be under-predicted even if the motion with maximum intensity is uniformly applied at all supports. |
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