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在结合前人的研究成果下,考虑相似比配制砂土为模型试验用土,自行设计了模型桩和组合荷载的加载装置,完成了两组室内模型试验。得到了对组合荷载作用下单桩的荷载–位移规律、单桩极限承载力规律及桩身内力和桩侧土体抗力的规律。分析了水平荷载对竖向承载力、弯矩荷载对水平承载力的影响机理,对考虑组合荷载作用下的桩身设计提出局部加强的合理建议。
Based on the research results of predecessors, two models of indoor model tests were completed by considering the similar ratio of the prepared sand as the model test soil and designing the loading device of the model pile and the combined load. The law of load-displacement, single-pile ultimate bearing capacity, internal force of pile and soil resistance of pile-soil under combined load are obtained. The influence mechanism of horizontal load on vertical bearing capacity and moment load on horizontal bearing capacity is analyzed, and reasonable suggestions for local strengthening considering pile design under combined load are proposed.