A simplified piecewise-hyperbolic softening model of skin friction for axially loaded piles
A simplified piecewise-hyperbolic softening model of skin friction for axially loaded piles
复制标题
轴向加载桩表面摩擦的简化分段双曲线软化模型
DOI：
10.1016/j.compgeo.2018.12.018
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发表时间：
2019
影响因子：
5.3
通讯作者：
Li Yong-Yi
中科院分区：
文献类型：
--
作者：
Xu Ling-Yu;Shao Wang-Da;Xue Ying-Ying;Cai Fei;Li Yong-Yi
在这项研究中，提出了一个简化的分段-双曲软化(SPS)模型来描述表面摩擦的软化和硬化行为。编制了一种高效的轴心受压桩非线性分析有限元程序。通过一个解析解和两个已有文献记载的轴心受压桩的现场试验，验证了该方法的适用性。此外，还进行了参数研究，考察了SPS模型各参数对桩的荷载-沉降关系的影响。最后，将SPS模型的计算结果与已有的两种软化模型的计算结果进行了比较。
In this study, a simplified piecewise-hyperbolic softening (SPS) model is proposed to characterize both softening and hardening behaviors of skin friction. A highly effective finite element program is developed for the nonlinear analysis of axially loaded piles. The applicability of the proposed method is verified by an analytical solution and two well-documented filed tests of axially loaded piles. Moreover, a parametric study is conducted to investigate the influence of various parameters of the SPS model on the load-settlement relationship of piles. Finally, the results obtained from the SPS model are compared with those obtained from other two existing softening models.