Nonlinear dynamic analysis of Meloland Road Overpass using three-dimensional continuum modeling approach |
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| Institution: | 1. Department of Civil Engineering, Kansas State University, Manhattan, KS 66506-5000, United States;2. Read Jones Christoffersen Ltd., Consulting Engineers, 144 Front Street West, Suite 500, Toronto, Ontario M5J 2L7, Canada;3. Department of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China;1. Formerly Department of Civil Engineering and Architecture, University of Pavia, Via Adolfo Ferrata, 3, 27100 Pavia, Italy;2. Department of Engineering and Geology, University of Chieti–Pescara, Viale Pindaro 42, 65127 Pescara, Italy;3. Department of Civil Engineering, University of Bristol, Queen’s Building, University Walk, BS8 1TR Bristol, UK;1. Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai, PR China;2. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, PR China |
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| Abstract: | This paper presents a three-dimensional (3D) continuum nonlinear analysis of the Meloland Road Overpass (MRO) near El Centro, California. The modeling methodology and the computational tools are discussed in detail. The performance of the computational model is evaluated by comparing the computed responses with the responses recorded at the bridge site during the 1979 Imperial Valley and 2010 El Mayor-Cucapah earthquakes. Amongst the recorded earthquake events at the bridge site, these two events caused the strongest shaking. The comparison shows that the 3D model is potentially an effective tool for detailed analysis of a full bridge system including foundation soils, pile foundations, embankments, supporting columns, and the bridge structure itself in a unified system without relying on any ancillary models such as Winkler springs. Additional response parameters such as displacements, rockings, and bending moments are also evaluated although none of these was measured during the seismic events. |
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| Keywords: | Bridge Seismic response Three-dimensional Continuum model Nonlinear dynamic analysis |
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