基于双曲线切线模量法的饱和尾矿砂单桩沉降计算

提出一种以地基非线性沉降计算的双曲线切线模量法为基础,结合荷载传递法的单桩沉降计算模型,将单桩沉降计算分解为桩底土体变形和桩身弹性压缩两部分。采用双曲线切线模量法对桩底土变形进行计算，相应参数由原位试验得到，能较好地反映原状土特性又能合理考虑其单桩的非线性沉降。利用此计算模型对饱和尾矿砂地基单桩的非线性沉降进行计算，结果表明:计算结果与实测结果较为接近，可为相同类型饱和尾矿砂地基单桩的沉降计算提供参考。

Calculation on Single-pile Settlement of Saturated Tailing Sand Based on Hyperbolic Curve Tangent Modulus Method

In this paper, a single-pile-settlement calculation model, which is based on hyperbolic curve tangent modulus method for computation of nonlinear settlement of foundation and incorporates load transfer method, was put forward. The calculation of single-pile settlement was decomposed into two parts, including soil mass deformation at the pile bottom and elastic compression of the pile body, wherein the soil mass deformation was calculated by hyperbolic curve tangent modulus method with the parameters from in-situ test so that the characteristics of original soil could be reflected well and the nonlinear settlement of the single pile be considered properly. Using this model, the nonlinear settlement of single pile for saturated tailing sand foundation was computed. The result shows that the calculated value is close to the measurements and may be referred in calculation of single-pile settlement of similar saturated tailing sand foundation.