At present,research on XCC piles has mainly focused on clay foundations;however,there has been little research on XCC piles in sand.In addition,the compaction effect of a pile had been mainly analyzed when the penetration of the XCC pile was studied,while ignoring the key problem that these compaction displacement loads produce additional pile responses to adjacent existing piles in actual engineering constructions.Therefore,this study adopted a Coupled Eulerian-Lagrangian(CEL)large deformation numerical technique for establishing an integrated CEL finite element numerical model of an adjacent XCC pile-sand-existing XCC pile.The numerical results were compared with the measured data from indoor model tests,which verified the feasibility and validated the CEL numerical technique for analyzing adjacent XCC pile-soil-existing XCC pile interactions.Subsequently,a series of parametric studies were performed to explore the influences of the penetration depth,spacing between adjacent piles and existing piles,and boundary conditions of the existing pile head on the lateral response of the existing pile.Finally,based on the results of the parametric analysis,a set of design charts that can be used by geotechnical engineers to evaluate the maximum lateral response of existing XCC piles caused by the penetration of adjacent XCC piles at the early design stage were developed to mitigate the risks associated with pile foundation construction.
关键词
路基工程/XCC桩/CEL大变形数值技术/砂土/侧向响应/设计图
Key words
subgrade engineering/XCC pile/CEL large deformation numerical technique/sand/lateral response/design chart
维普
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