考虑卸荷的桩-土接触面模型研究 |
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引用本文: | 杨砚宗.考虑卸荷的桩-土接触面模型研究[J].路基工程,2014,0(2):108-110. |
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作者姓名: | 杨砚宗 |
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作者单位: | 上海长凯岩土工程有限公司, 上海 200070 |
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摘 要: | 以多组砂土与混凝土接触面大型直剪试验为基础,对卸荷条件下接触面的力学行为进行研究,通过理论推导,建立砂土径向卸荷条件下的桩-土接触面剪切模型,给出了模型中各个参数的确定方法,并采用大型直剪试验数据对模型进行验证。结果表明:考虑卸荷的桩-土接触面剪切模型可以很好地反映试验结果,可为工程实践提供一些参考。
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关 键 词: | 接触面 砂土 卸荷 剪切试验 |
收稿时间: | 2019-11-11 |
Study on Pile-Soil Interface Shear Model with Unloading Consideration |
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Abstract: | Based on several groups of large-scale direct shear test on contact surface between sand and concrete, the mechanical behavior on the contact surface in unloading was studied. Through theoretical derivation, the shear model of pile-soil interface in radial unloading for sand was established and the determination method of various parameters for the model was offered; then the model was validated by using the data from the large-scale direct shear tests. The result shows that the pile-soil interface shear model with unloading consideration may reflect the test result well and be referred by engineering practice. |
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