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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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可液化场地端承单桩振动台模型试验
DOI: 10.3969/j.issn.1671-7627.2013.06.002, PP. 5-10
Keywords: 液化,倾斜场地,单桩,流滑推桩,振动台试验
Abstract:
设计并完成可液化场地单桩小型振动台模型试验。试验单桩长径比分别为40:1和50:1,场地为饱和南京细砂构成的水平和倾斜2种场地类型。考虑桩顶是否附加结构和桩底是否嵌固2种约束条件。结果表明:增大桩的长径比、桩底嵌固、桩顶附加结构能够显著增大桩顶的加速度反应以及桩身的应变反应;桩顶加速度以及桩身弯曲应变均呈现随场地液化过程而变的阶段性反应特征;液化倾斜场地的流滑将加大模型桩的动力反应,流滑对桩身的推动作用使桩顶加速度反应出现明显不对称现象,且显著改变了桩身应变分布形态。
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