室内土工模型试验的新方法——桩基渗水力土工模型试验

本文通过桩基渗水力工模型试验实例，介绍了一种新的室内土工模型试验方法－渗水力土工模型试验。它利用水在土体中的渗流来提供土工模型试验中必须的体积力，因而克服了常规模型试验和离心模型试验中一些缺陷。该方法在桩基研究及工程实际中具有良好的应用前景。

A NEW INDOOR MODEL TEST OF SOIL -THE HYDRAULIC GRADIENT SIMILITUDE MODEL TEST FOR PILED FOUNDATION

Similitude model test is very important in geotechnics research. But conventional gravity field of ig model test fails to reach the prototype stress level, because the stressstrain behavior of soil depends on its level of effective stress. Centrifugal model can provide high body force, so it is used widely in geotechnics, although it has some drawbacks. In this paper, a new model test of soil, the hydraulic gradient similitude (seepage force) model, is introduced through a pile's seepage force model test. The seepage force model employs a high body force, hence the high stress levels approaching field conditions can be reproduced.It overcomes some failing in conventional model and centrifugal model of getechnics. So it is very useful in studying the piled foundation and other practice in geotechnical engineering.