S-clay1模型与剑桥模型的分析比较

土体的本构模型是高等土力学的重要内容,其中最经典的模型当属剑桥模型.英国剑桥大学的Roscoe于1963年提出了用于正常固结或者弱超固结粘土的剑桥模型,可以被视为现代土力学的开端.在此以后很多学者都在本构模型方面做出了很多研究,提出了很多新的模型,如拉德-邓肯模型、空间滑动面模型、S-clay1模型等.本文主要介绍S-clay1模型与剑桥模型的比较,并结合试验进行分析.本次试验采用的是GDS标准应力路径三轴试验系统,该系统测量精度高而且可以数字化操作,在测量精度和自动化程度上都比常规三轴试验先进很多.

Comparative Analysis of S-clay1 Model and Cambridge Model

Constitutive model of soil body is one of the most important part of soil mechanics. The most classic constitutive model is Cambridge model. Professor Roscoe at University of Cambridge had drawn a Cambridge model applied to the normal consolidation soil and weak over-consolidated soil in 1963. It can be seen as the start of modern soil mechanics. After then, many scholars of geotechnical engineering bad done a lot of study in constitutive models. And many of them put forward their new models, such as Lade-Duncan model, spatial sliding surface model, S-clayl model. The main content of this paper is comparative analysis of Cambridge model and S-clayl model. Besides, we also do many experiments. Through the experiments, we can conclude that the S-clayl is more suitable to the soil body that we used in the experiments. In the experiments, we used the Standard stress path triaxial test system, which is controlled by computer. Compared with the other system, it is much more precise and automated. It is much more advanced than the normal triaxial test system.