Centrifuge modeling of batter pile foundations under earthquake excitation |
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| Institution: | 1. IFSTTAR, GERS, SV, F-44341 Bouguenais, France;2. Ecole Centrale de Nantes, Université de Nantes, CNRS, Institut de Recherche en Génie Civil et Mécanique (GeM), 1 Rue de la Noë, F-44321 Nantes, France;1. DICEA, Università Politecnica delle Marche, Ancona, Italy;2. DESD, University of San Marino, San Marino, San Marino;3. SAD, University of Camerino, Ancona, Italy;1. Department of Civil Engineering, Faculty of Engineering, University of Guilan, Rasht, Guilan, Iran;2. Faculty of Engineering, Islamic Azad University of Zanjan, Zanjan, Iran;3. Faculty of Civil Engineering, Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223 Vilnius, Lithuania;1. School of Civil Engineering, Qingdao University of Technology, Qingdao, China;2. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China;3. Centre for Infrastructure Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Kent Street, Bentley, WA 6102, Australia;4. Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Canada;5. Department of Structural Engineering, University of California, San Diego, USA;6. School of Civil Engineering, Harbin Institute of Technology, Harbin, China;7. Earth Mechanics Inc., California, USA;1. Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería (SIANI), Universidad de Las Palmas de Gran Canaria, Edificio Central del Parque Científico y Tecnológico, Campus Universitario de Tafira, 35017 Las Palmas de Gran Canaria, Spain;2. Departamento de Mecánica de Estructuras e Ingeniería Hidráulica, ETS de Ingenieros de Caminos, Canales y Puertos, Universidad de Granada, Avenida Fuentenueva s/n, 18002 Granada, Spain;1. School of Civil Engineering, Qingdao University of Technology, Qingdao, China;2. Department of Civil Engineering, Zhejiang University, Hangzhou, China;3. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China;4. Department of Civil and Environmental Engineering, ATLSS Engineering Research Center, Lehigh University, Bethlehem, PA, USA;5. School of Civil Engineering, Harbin Institute of Technology, Harbin, China;1. School of Civil Engineering, College of Engineering, University of Tehran, Tehran, Iran;2. Member of Civil Engineering Department, University of Maragheh, Maraghe, Iran;3. CH2M HILL, 1100 NE Circle Blvd, Suite 300, Corvallis, OR, USA |
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| Abstract: | Although batter pile foundations are widely used in civil engineering structures, their behavior under seismic loadings is not yet thoroughly understood. This paper provides insights about the differences in the behavior of batter and vertical piles under seismic soil-pile-superstructure interaction. An experimental dynamic centrifuge program is presented, where the influences of the base shaking signal and the height of the gravity center of the superstructure are investigated. Various seismic responses are analyzed (displacement and rotation of the pile cap, total shear force at the pile cap level, overturning moment, residual bending moment, total bending moment and axial forces in piles). It is found that in certain cases batter piles play a beneficial role on the seismic behavior of the pile foundation system. The performance of batter piles depends not only on the characteristics of the earthquakes (frequency content and amplitude) but also on the type of superstructures they support. This novel experimental work provides a new experimental database to better understand the behavior of batter pile foundations in seismic regions. |
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| Keywords: | Centrifuge Dynamic tests Earthquake Soil-structure interaction Batter piles Foundation Gravity center |
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