Model tests on horizontal pile-to-pile interaction incorporating local non-linearity and resonance effects |
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| Institution: | 1. Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Saitama, Japan;2. Department of Civil Engineering, University of Patras, 265 00 Patras, Greece;1. Department of Civil Engineering, Northwestern Polytechnical University, Xi’an 710072, China;2. Department of Civil Engineering, Tianjin University, Tianjin 300354, China;1. College of Urban Construction, Zhejiang Shuren University, Hangzhou 310015, China;2. Department of Civil Engineering, University of Akron, Akron, OH 44325, USA;1. Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin, Heilongjiang 150090, China;2. School of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China;1. N.T.U.A., School of Civil Engineering, Geotechnical Department, 15780, Athens, Greece;2. GR8-GEO Engineering Consultants, 11741, Athens, Greece;1. Department of Civil Engineering, Faculty of Engineering, Assiut University, Assiut, Egypt;2. Department of Civil Engineering, Faculty of Engineering, Sherbrooke University, Sherbrooke, QC, Canada;3. Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan |
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| Abstract: | Dynamic experimental studies on horizontal interaction factors for laterally loaded model soil–pile systems subjected to low-to-high amplitude pile head loading are reported, focusing on the effect of dynamics and local non-linearity. Results obtained from dynamic experiments with different amplitudes of harmonic lateral loading on instrumented model soil–pile systems conducted on a shaking table indicate that the resonance of soil–pile system shows a profound impact on the horizontal interaction factors. Furthermore, behavior of the soil–pile system becomes highly non-linear with increasing amplitude of loading, as the extent of local non-linearity around the pile increases. Consequently, group effects cannot be predicted by using established approximate equations based on the assumption of linear viscoelastic behavior. To this end, new semi-empirical equations are proposed for obtaining the horizontal interaction factors, as an extension of available approximate equations to incorporate the local non-linear behavior of soil–pile system for both small and large pile spacings. |
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