扩大支盘加筋水泥土桩抗拔承载性能模型试验研究

Model Test on Uplift Bearing Capacity of Expanded Branch and Reinforced Cement-soil Pile

通过室内模型试验,研究扩大支盘加筋水泥土桩的抗拔承载性能。建立桩在上拔作用下的力学分析模型。采用上述模型对上拔力作用下结构的受力性能进行了参数分析,对支盘所处桩身位置、桩身支盘数量、桩身材料对桩的抗拔承载性能的影响进行了分析,研究各因素对支盘桩的承载力发挥效果的影响,分析各因素对桩的桩顶位移和内力的影响规律。

Through indoor model tests,this paper focused on the bearing performance of the expanded branch and reinforced cement-soil pile.The paper established a mechanical analyzing model under uplifting load,through which parameters analysis of the structure′s bearing performance was made.Uplift bearing per-formance affected by different locations,the number and the material of the branch was further analyzed. Factors of the branch piles′bearing capacity,pile top displacement and internal force were also explored.