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On Bearing Behavior of Rigid- flexible Multi-pile Composite Sub-grades
Pages: 8-10
Year: Issue:  5
Journal: Research & Application of Building Materials

Keyword:  composite foundationrigid-flexible multi-pileABAQUSpile body stressdeformation law;
Abstract: The present research imitates the bearing behavior of rigid- flexible multi- pile composite foundation using finite element software ABAQUS and obtains the pile body stress characteristics and deformation law. The load of rigid pile is obviously bigger than that of the flexible pile. As for the same type pile,stress of angle pile is the largest,stress of side pile is smaller,and stress of center pile is the smallest. The biggest pile body stress is not at the top of piles,but in a certain position of them. Laws of deformation and bearing capacity of composite foundation are opposite: the deformation of pile top is largest,the deformation of pile group center is the largest,that of the side pile is smaller,and that of the angle pile is the smallest.
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