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工业建筑  2009 

砂土中静压桩挤土时效性的室内应变保持试验研究

DOI: 10.13204/j.gyjz200907018, PP. 61-66

Keywords: 砂土,静压桩承载力,时效性,应变保持试验

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Abstract:

工程实践中发现砂土中的挤土桩承载力亦有时效性,超静孔隙水压力消散理论无法解释该现象。利用应力路径三轴仪进行应变保持试验,模拟沉桩及随后的桩周土体的应力状态和物理性质的改变,经分析试验结果得出,砂土中静压桩承载力时效性是由于桩周土体蠕变膨胀引起桩壁上作用的水平应力增大的结果。

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