块串模型及其应用

An Application of Bricks on Strings Model to Geotechnical Engineering

土体的非线性和对应力历史的依存性已经不能简单地用剑桥模型来描述了。大量的实验资料和现场观测表明，土体在加载的全过程，除非常小的应变状态外，都呈现强烈的非弹性。块串模型就是在这种性质基础上发展起来的。本文介绍了块串模型的物理概念，论述了模型参数的意义及其测定。

This paper introduces the current knowledge of the stress strain behaviour of soils at small strains and a state of the art soil model:bricks on strings model,which has the ability to model soil behaviours at small strains,including the influence of recent stress history and non linearity on soil stiffness,and explains the meanings of soil parameters used in the model.Finally,the tunnelling in soft clay is taken as an example of the application of bricks on strings model to geotechnical engineering.