Single beam analogy for describing soil–pile group interaction |
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Authors: | Kazuo Konagai Yuanbiao Yin Yoshitaka Murono |
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Affiliation: | a Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan;b Department of Structure Technology Research, Railway Technology Research Institute, Tokyo 185-8540, Japan |
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Abstract: | Most laterally loaded piles are flexible in the sense that they are not deformed over their entire lengths. Instead, pile deflections become negligible below an ‘active pile length’ La. This La is an important parameter that governs the overall behavior of a rigidly capped pile group. In the present approach, piles closely grouped together beneath a superstructure are viewed as a single equivalent upright beam whose stiffness matrix determines La. This idea is verified for different cases of pile spacing, and is further extended for nonlinear behavior of soils surrounding grouped piles. |
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Keywords: | Pile group Pile-to-pile spacing Equivalent-single-upright-beam Active pile length Ultimate soil resistance |
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