重力式平台地基的模型律

土的非线性特性以及重力应力，目前只能在离心模型试验中按模型比模拟，而土 工常规模型试验仅限于研究地基和土工建筑物变形与破坏的机理及其相应的参数。鉴 于这种局限性，本文基于相似原理、伯金汉定律和土的特性，克服了模拟土非线性性 态及重力应力的困难，推导出适用于基础表层滑移和动态反应问题的土工常规模型试 验的模型律，以预测原型的情况，扩大了土工常规模型试验的实用性．

Model Laws of Gravity Platform Foundation

Thegeotechnical ordinary model test (uncentrifug model test)can only provide a guideto the mech anism and parametric numbers associated with the deformation and the collapse of the soilfoundation and earth structures. It is not suitable to predict the prototype behaviour directly from the model test resultsby using scale factors, because of the mechanical properties of soil on the ambient stress conditions and the importance of gravity-induced stresses, scaling can only be satisfi- ed undercentrifugal modeling conditions. Since thereis a serious defect as mentioned before,the model laws applied to geotechnical ordinary model test for sliding and dynamic response of foundation arl derived herein based on the concept of similarity, Buckingham's theorem and soil characteristics. These model laws can avoid problems associated with testing, at earth gravity, small soil models involving material with strongly nonlinear and stress-dependent behaviour. So that they may be used for the prediction of prototype behavior. Therefore the applicability of geotechnical ordinary model test is extend- ed.