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Investigation of seismic response of cantilever retaining walls: Limit analysis vs shaking table testing
Affiliation:1. Department of Civil Engineering, University of Bristol, UK;2. Telematic University of Naples, Pegaso, Italy;3. Department of Engineering, University of Sannio, Italy;4. Department of Civil and Environmental Engineering, University of Naples Federico II, Italy;5. Department of Civil Engineering, University of Patras, Greece;6. Department of Civil and Environmental Engineering, University of California at Los Angeles, UCLA, USA;1. Department of Civil and Environmental Engineering, Tarbiat Modarres University, Tehran, Iran;2. School of Civil Engineering, University College of Engineering, University of Tehran, Tehran, Iran;1. School of Industrial Engineering (ETSII), Universidad Politécnica de Madrid (UPM), José Gutiérrez Abascal, 28006 Madrid, Spain;2. Institut de recherche en génie civil et mécanique (GeM UMR CNRS 6183), Ecole centrale de Nantes, 1, rue de la Noe, BP 92101, 44321 Nantes cedex 3, France;1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
Abstract:The earthquake response of cantilever retaining walls is explored by means of theoretical analyses and shaking table testing conducted at University of Bristol (EERC - EQUALS). The theoretical investigations employ both limit analysis and wave-propagation methods, which take into account different aspects of the problem such as inertia, strength, kinematics and compatibility of deformations. The experimental programme encompasses different combinations of retaining wall geometries, soil configurations and input ground motions. The response analysis of the systems at hand aims at shedding light onto salient features of the problem, such as: (1) the magnitude of soil thrust and its point of application; (2) the relative sliding versus rocking of the wall base and the corresponding failure modes; (3) the importance of the interplay between soil stiffness, wall dimensions and excitation characteristics, as affecting the above; (4) the importance of wall dynamics and phase differences between peak stresses and displacements. The results of the experimental investigations are in good agreement with the theoretical models and provide a better understanding on the complex mechanics of the problem.
Keywords:Retaining walls  Seismic earth pressures  Soil-structure interaction  Model tests
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