中文摘要：

在岩土工程勘察取样过程中，取土管的贯入会引起土体的扰动变形，影响到对土体物理力学性质的准确评价。为了研究取土管贯入过程中土体扰动变形特性，基于透明土及 PIV 技术，开发了相应的取土管贯入模型试验系统，进行了取土管的贯入试验，得到了在取土管贯入过程中土体扰动变形场的分布特性。试验结果表明：土体扰动变形随着取土管贯入深度增大而增大，管外土体主要表现为斜向上的隆起变形；管内土体主要为向上的隆起变形，在深度方向最大变形位于取土管中间部位；不同截面处土体其变形规律基本一致，截面间土体剪切变形较小。

英文摘要：

Thesoil disturbance deformation induced by penetrationofsampler tube has a great influence on the accuracy of physical and mechanical evaluationof soilsin the soil investigation engineering. A small-scale model test systemis developed to study the non-intrusive measurement of the soil disturbance deformation characteristics during penetration ofsamplertube using the transparent soils and PIV （particle image velocimetry） technique. Sampling penetration testsare conducted, and the soil deformation characteristics during penetrationofsampler tubeare obtained. The test results show that the soil disturbance deformation increases withthepenetration depthofsampler tube, and the upheaval deformation of soils outside the sampler is dominated.Thedisturbance deformation of soils in the sampler is mainly upheaval, and the maximum upheaval deformation occurs at the middle of the sampler in the depth direction.The deformation distribution characteristics of soils on different sections in the sampler are nearly the same,andthe shear strain of soils between adjacent sections is relatively small.